1 15 2 https://www.nal.usda.gov/exhibits/speccoll/files/original/0c41c6d2091cb7accae8f4f1a073ab25.pdf c081adff961a2bb80598e7c051cfa2b0 PDF Text Text Item D Number 02207 Author Hilker D R - Toxicology Institute, Center for Laboratories and Resear RopOrt/ArtiGlO TltlB Determination of Chlorinated Combustion Products in Samples from a Contaminated Office Building Journal/Book Tttle Year 1982 Month/Day October Color O Number of Images 13 Descriflton Notes Thursday, September 20, 2001 Page 2207 of 2293 �PROGRESS REPORT: Determination of Chlorinated Combustion Products in Samples from a Contaminated Office Building D.R. Hilker, R.M. Smith, P.W. O'Keefe, and K.M. Aldous Toxicology Institute Center for Laboratories and Research New York State Department of Health Albany, NY 12201 RECEIVED ° ctober ' 1982 OCT131982 DIRECTOR PUBLIC HEALTH �Abstract This report describes additional work that has been completed relevant to the analysis of materials from the Binghamton State Office Building since the March, 1982 document titled "Determination of Polychlorinated Dibenzofurans in Soot Samples from a Contaminated Office Building." Spiked recovery experiments as well as repeat analyses for polychlorinated dibenzofurans (PCDFs) and isomer specific analysis for 2,3,7,8 Tetrachlorodibenzo-p-dioxin (TCDD) in some of the original soot samples have been completed. Improvements in data processing techniques and statistical evaluation of the early high resolution scanning data are discussed. Results are presented from an experiment to measure volatilization rates of TCDD into air and the effectiveness of trapping the vapor on activated silica gel sampling cartridges. -2- �Introduction The analysis of a series of soot samples taken from various floors of the Binghamton State Office Building has already been described. A number of plausible but experimentally verifiable assumptions were made during the interpretation of this data. These include the hypothesis that Tetra CDF recoveries are generally comparable to those of more highly chlorinated PCDFs, that benzene is an effective extraction solvent, that the precision of these analyses was sufficient to permit sample to sample comparison, and that the signals used in quantitation were entirely due to PCDFs. Results of experiments designed to test these assumptions are presented here. In addition, efforts to further characterize the concentrations of additional compounds present in the soot extract are described. Finally, the results of preliminary experiments designed to devleop a well-validated methodology for determination of PCDDs and PCDFs in air at the pg/M level are presented. -3- �1) Recovery of Spiked Soot Samples. Four 10 milligram samples of carbon (active coconut charcoal) were spiked with labelled and unlabelled standards and subjected to the extraction and clean-up procedures already described. Results are presented in Table 1 for the recovery of Tetra CDF and Hexa CDF. Sample S-2 was spiked with only unlabelled standard (2 ng of Tetra CDF and 13.4 ng of Hexa CDF). Carbon samples S-3, S-4 and S-5 were, in addition, fortified with 95.2 ng of Cl-TCDF. Generally, recoveries were good showing that extraction and clean-up were effective and confirming the earlier assumption that 37Cl-Tetra CDF recoveries gave reasonable estimates for Hexa CDF recoveries when Tetra-CDF recoveries were good. The poor recovery (3%) for Tetra CDF in S-5 was also seen in the 12th Floor sample and results from the critical nature of one of the steps of the clean-up procedure. ' 2) Comparison of the Efficiencies of Benzene and Toluene Extractions Published data indicates that toluene soxhlet procedures 2 produce superior recoveries from certain matrices. Since benzene has been used in these studies, a comparison of the extraction efficiencies of these two solvents was appropriate. Table 2 presents recovery data and quantitation of PCDFs in the soot homogenate following the two different extraction procedures. The only difference in the procedures was the substitution of toluene for benzene in the first extraction step. Results show a near equivalent extraction efficiency for PCDFs and, additionally, provide a measure of the reproducibility of the overall analysis procedure. -4- �3) Standard Response Factors. Several additional standards have been analyzed by GC/MS to obtain response factor so that further quantitations can be made on soot sample extracts. Solutions of a tetrachlorobiphenylene (Tetra GBP) and octachlorobiphenylene (Octa CBP) have been analyzed and response factors for each have been computed. Tetra CBP gave a response factor of 619 counts/ng and Octa CBP 263 counts/ng using nominal concentrations for the available standard solutions. The concentrations of these standards have yet to be accurately established. An EPA standard Halowax 1051 was also analyzed and found to contain only Hepta and Octa Chloronaphthalene. The standard contained 92% Octachloronaphthalene which gave a response factor of 592 counts/ng of standard injected on-column. These response factors can be used in the quantitation of soot extracts once recoveries for these compounds have been established. 4) Chloronaphthalene Quantitation. Quantitation of Chloronaphthalenes in the soot homogenate sample has been made based on the response obtained for a Halowax 1051 standard. Assumptions made in this quantitation that are the recovery of these compounds is comparable to that of the PCDFs and that response factors of the congeners are related to the response factors of the PCDF congeners. Based on the Halowax 1051 standard response for Octachloronaphthalene and the recovery of Cl-TCDF, the concentration of Chloronaphthalenes in the soot homogenate is as follows: -5- �Polychloronaphthalenes (ppm) in soot (corrected for recovery) Tetra-CN 37 Penta-CN 143 Hexa-CN 176 Hepta-CN 105 Octa-CN 5) 11 Repeat Analyses To investigate the reproducibility of the methodology three of the original soot samples were reanalyzed. these analyzes are shown in Table 3. The results of A reproducibility figure was generated by averaging the per cent variation from the mean of each set of two values. The results for TCDF in the soot was calculated using an internal standard and exhibit better reproducibility ( 15%). The same Cl.-TCDF standard solution was used for both the original and the reanalysis. The concentration of HXCDF and OCDF were calculated by an external standard method using different standard solutions and they are less reproducible. The reproducility of the method should increase as the availability and amount of the labelled and native PCDFs and PCDDs improves. 6) Mass Assignment in High Resolution Scanning Experiments. High resolution mass spectrometry permits the assignment of elemental compositions to each resolved measured exact mass in each high resolution mass spectrum. The certainty of structural assignments and quantitation of concentration levels are improved by this technique. -6- �In this phase of the Binghamton work we have analyzed more carefully our high resolution data for accuracy of mass assignment. Table 4 compares the accuracy of mass assignment in a standard injection and three samples of soot taken from the BSOB. The average error and standard deviation of the standard injection run on the same day as the samples and the sample injections are similar and within one standard deviation of the mean. This suggests that the signals used to quantitate these compounds are entirely due to these compounds and not to interferences. 7) Air Sampling for 2,3,7,8 TCDD In order to extend our 2,3,7,8-TCDD analytical method to air analysis in the Binghamton State Office Building, experiments using C radiolabeled 2,3,7,8-TCDD have been performed to investigate TCDD volatilization, trapping efficiency, and breakthrough. Results obtained under laboratory conditions show that 60-70% of a 2 ng. TCDD standard is volatilized from the surface of a quartz-glass tube held at 150°C for 10 min while being swept by air (23°C inlet temp, 37°C outlet temp) at 20 L/min. The volatilized TCDD can then be trapped by an activated silica gel cartridge with a trapping efficiency found to be 80-96% (80% = 72 hr breakthrough study). Experiments are underway to test the use of a glass fiber prefilter to trap air-borne particulate matter separately. 8) Analysis for 2,3,7,8-TCDD. Three soot samples were analyzed for 2,3,7,8-TCDD after 4 isomer specific clean-up described elsewhere. The mass -7- �spectrometer was used in the High Resolution Multiple Peak Monitoring (HRMPM) mode to enable the most sensitive detection of 2,3,7,8 TCDD to be made. Signal measurements were taken in the mass region about each of the selected ions in the parent cluster for 2,3,7,8 TCDD and labelled C-TCDD so that exact mass chromatograms of native TCDD and internal standard TCDD could be obtained after the samples were run by this GC/MS technique. quantitations from this analysis are given in Table 5. The The concentrations of 2,3,7,8 TCDD found in the soot confirm the finding of other laboratories that the 2,3,7,8 TCDD/2,3,7,8 TCDP ratio is the order of .01 and supports the assumptions used in discussions of chemical and biological data. —8— �CONCLUSIONS Data presented for spiked sample recoveries indicate that comparable recoveries are obtained for Tetra CDF and Hexa CDF and thus earlier quantitations based on this assumption have been shown to be valid. The extraction efficiency of benzene has been shown to be comparable to toluene for the analytes of interest. Repeat analyses of several soot samples have indicated that good precision is obtained and that sample to sample comparisons are valid. Evaluation of accurate mass assignments of both sample and standard runs by the high resolution mass spectrometer system form a basis for proving that interferents were not present or were resolved from the signals produced for PCDFs and that valid quantitation was obtained from these data. Additional quantitation of 2,3,7,8 TCDD and preliminary data for PCNs add to the characterization of the soot samples. TCDD levels found were consistent with earlier data and predicted levels. The preliminary experiments on volatilization and trapping of TCDD in air show analytical promise and will be further evaluated and validated for PCDF and PCDD determinations in air o at the pg/M levels. �REFERENCES Determination of Polychlorinated Dibenzofurans in Soot Samples from a Contaminated Office Building. R.M. Smith, D.R. Hilker, P.W. O'Keefe, S. Kumar and K.M. Aldous. New York State Department of Health, CLR Report, March 1982. Reversed-phase liquid-solid chromatography on Modified Carbon Black. M. Colin, C. Eon and G. Guiochon. Journal of Chromatography 122 (1976) 223-242. Comparison of Chemical and Biological Data on Soot Salmples from the Binghamton State Office Building. G. Eadon, K.M. Aldous, G. Prenkel, J. Gierthy, D. Hilker, L. Kaminsky, P. O'Keefe, J. Silkworth and R.M. Smith. New York State Health Department, CLR Report, March 1982. Modification of a HPLC-GC Procedure for Separation of the 22 Tetrachlorodibenzo-p-dioxin isomers. P. O'Keefe, R. Smith, C. Meyer, D. Hilker, K. Aldous and B. Jelus-Tyror. of Chromatography 242 (1982) 305-312. Journal �TABLE 3 Re-analysis of Soot Samples Sample # Series Concentration (ppm) TCDF Recover; HxCDF OCDF 290 35 49 310 197 74 21 1 70 32 3.0 50 36 19 4.0 51 1 100 70 4 17 2 Soot Homogenate 320 2 713 8th Floor 1 2 715 9th Floor 92 44 16 48 Series 1 analyzed 3/82, Series 2 10/82, 2 37 Based on Cl-TCDF internal standard. Values corrected for recovery. �TABLE 4 Comparison of Mass Accuracy Errors 8th Floor Injection Description Theoretical Masses Standard 9th Floor Soot 713 715 Homogenate Errors (ppm) (Standard Deviation of Error, ppm) of Interest 371.8237 ) -6 (11) -7 (13) -4 (14) -2 (10 373.8207 )HxCDF -3 ( 7 ) -4 (13) -7 (12) -2 (10 375.8178 ) 0 (13) -6 (10) -9 (12) -2 ( 9 ) 441.7428 ) -3 (14) -8 (13) -5 ( 9 ) -2 (14 443.7398 )OCDF 0 (9) -1 (12) -7 (14) -3 (15 445.7369 ) 0 (9) 1 (8) -7 (16) -5 (10 L Soot Homogenate used in Animal Toxicology Studies. �TABLE 5 Analysis of Soot Samples for 2,3,7,8 TCDD Sample Soot Horaogenate Cone, (ppm) RRT D.L. (ppm) 320/322 Ratio .46 1.0 .05 86% .26 1.0 .03 80% 1.0 .15 69% % Recovery 7.0 (floor 3-4) 713 16 (8th floor) 715 2.2 (9th floor) Soot Homogenate used in animal toxicology studies. 8% � Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Alvin L. Young Collection on Agent Orange Description An account of the resource <p style="margin-top: -1em; line-height: 1.2em;">The Alvin L. Young Collection on Agent Orange comprises 120 linear feet and spans the late 1800s to 2005; however, the bulk of the coverage is from the 1960s to the 1980s and there are many undated items. The collection was donated to Special Collections of the National Agricultural Library in 1985 by Dr. Alvin L. Young (1942- ). Dr. Young developed the collection as he conducted extensive research on the military defoliant Agent Orange. The collection is in good condition and includes letters, memoranda, books, reports, press releases, journal and newspaper clippings, field logs and notebooks, newsletters, maps, booklets and pamphlets, photographs, memorabilia, and audiotapes of an interview with Dr. Young.</p> <p>For more about this collection, <a href="/exhibits/speccoll/exhibits/show/alvin-l--young-collection-on-a">view the Agent Orange Exhibit.</a></p> Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Box The box containing the original item. 088 Folder The folder containing the original item. 2207 Series The series number of the original item. Series IV Subseries II Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Hilker, D. R. R. M. Smith P. W. O'Keefe K. M. Aldous Description An account of the resource <strong>Corporate Author: </strong>Toxicology Institute, Center for Laboratories and Research, New York State Department of Health, Albany, New York Date A point or period of time associated with an event in the lifecycle of the resource 1982-10-01 Title A name given to the resource Determination of Chlorinated Combustion Products in Samples from a Contaminated Office Building Subject The topic of the resource BSOB PCBs analytical studies https://www.nal.usda.gov/exhibits/speccoll/files/original/f208d78a1de1cbeafdf9b658efc6fca2.pdf 525c40d27c227cdf281229ddc7d68c1a PDF Text Text Item D Number °2194 Author Smith R M Corporate Author Toxicology Institute, Center for Laboratories and Resear ' - ' Roport/Artldo TltlB Determination of Polychlorinated Dibenzofurans in Soot Samples from a Contaminated Office Building Journal/Book TltlB Year 1982 Month/Day March Color Number of ImaQBS n 68 Descripton Notes Thursday, September 20, 2001 Page 2194 of 2293 �Determination of Polychlorinated Dibenzofurans in Soot Samples from a Contaminated Office Building R. M. Smith, D. R. Bilker, P. W. O'Keefe, S. Kumar and K. M. Aldous Toxicology Institute Center for Laboratories and Research NYS Department of Health Albany, NY 12201 March 1982 �ABSTRACT The identification and quantitation of polychlorinated dibenzofurans (PCDF) in soot samples from the Binghamton State Office Building is reported. The analytical techniques and sample clean-up procedures are discussed and the identification of other major chlorinated combustion products given. INTRODUCTION I On February 5, 1981, a soot-producing fire involving a ^transformer i occurred in an office building in Binghamton, New York. The transformer contained a dielectric fluid with the trade name "Pyranol" consisting of polychlorinated biphenyl (PCB) Aroclor 1254 (65%) and chlorinated benzenes (35%) together with some trace additives. Preliminary analyses of a soot sample showed high levels of PCB and the presence of 3 ppm 2,3,7,8 TCDD and 100 ppm 2,3,7,8 TCDF (1). TCDFs and PCDFs are commonly found as contaminants in PCB formulations (2,3) and have also been shown to occur when PCB is heated under certain conditions (4). Subsequent samples analyzed in our laboratory (5,6) include a soot homogenate used for animal toxicity studies and an air particulate sample taken inside the building using a high-volume air filter. TCDFs. Both samples were found to contain a mixture of The analysis of soot sample by two other dioxin laboratories verified the presence of Tetra Chlorodibenzodioxin (TCDD), TCDF and heavier chlorinated PCDDs and PCDFs (7,8). Several of the polychlorinated biphenylene compounds were also identified. �The present report describes the analysis of a representative soot sample from each of the 17 floors of the building and a soot homogenate used in animal toxicology experiments for PCDFs. Provision has been made in the clean-up and in data aquisition for the analysis of PCDDs but this will be discussed in a subsequent report. �METHOD Sampling Because a large portion of the contaminated building had already been cleaned to some degree, the particulate matter which had accumulatd undisturbed on the upper surface of suspended ceiling panels was sampled on each level. One half (2 ft. x 2 ft.) of a ceiling panel was wiped clean using a dry cellulose filter paper. Both the obtained particulates and the filter paper were stored inside a screw-capped glass test tube for analysis. Often adjacent samples were combined in the laboratory to provide enough weighable material for testing. A group of 8 samples was collected in the same building area for each of 16 floors. A sample of soot homogenate from several floors which was used in animal toxicology experiments was also included. Extraction Six to eighty milligrams of particulate were weighed out and placed into a glass extraction thimble containing 5 mm of silica gel (Bio Rad). Internal PCDD or PCDF standard in benzene was added to only 2 samples prior to extraction (added to all other samples after extraction) so other extracts could also be used for animal and cellular testing experiments. A glass soxhlet extraction apparatus was then charged with 100 ml benzene and the particles were continuously extracted for 16 hours. A solvent blank, a carbon blank (active coconut charcoal), and four recovery control samples were similarly extracted and analyzed. All extracts were stored in the dark. �Collaborative Studies Separate portions of each crude extract were provided for PCB analyses and for use in cell keratinization studies. Sample Clean-up The benzene extract was concentratd to 5 ml using a boiling water bath. An aliquot of the sample was spiked with 80 1 of mixed, labeled internal standard (13C 2,3,7,8 TCDD, 37C1 37 TCDF, Cl OCDD) and cleaned-up using three sequential liquid chromatographic columns as follows: Each sample was diluted with acetone to 20% benzene and injected onto a low pressure LC system using a column of 50 mg PX-21 adsorptive carbon mixed with 600 mg celite. This column is known to strongly adsorb planar, halogenated aromatics. sample was washed with 40 ml of 20% benzene/acetone. The Flow through the column was reversed, and the fraction containing PCDDs and PCDFs was eluted with 30 ml toluene. The toluene was removed in boiling water bath using a stream of N_ and the solvent was changed to dodecane. The sample was then applied to a 1 cm id x 8 cm long column containing 2% deactivated silica gel (Bio Rad) and eluted with hexane. The 0-10 ml fraction containing the PCDDs and PCDFs was collected. This chromatographic step is effective at eliminating relatively polar, highly colored components. The sample was then directly applied to a 1 cm x 8 cm long column containing activated Florisil (180° overnight). The column was washed with 20 ml benzene to remove PCBs and PCDD/PCDF fraction was eluted using 20 ml of 3% CH.CN, 47% CH2C12, 50% Hexane. The sample was then concentrated to 80 1 in �benzene prior to capillary Gas Chromatography/high resolution Mass Spectrometry (GC/HRMS). Instrumental Conditions Gas Chromatography - A Carlo-Erba Model 4160 Capillary Gas Chromatograph with on-column injection was used with a 30m x 0.32 ram i.d. fused silica "Durabond" DB-5 column ( & W Scientific) j and helium carrier gas. The effluent from the GC column was coupled via an open-split interface to the mass spectrometer source re-entrant using a length of 0.16 mm i.d. fused silica tubing de-activated with 2% Carbowax 20M in Methylene Chloride and coated with a 15% OV-17 in Methylene Chloride then conditioned at 50°C to 300°C at l°C/min. programmed during analysis as follows: The GC oven was 70 C to 180° at 10°C/min then 3°C/min to 270°C and hold isothermal for 20 minutes. The GC/MS interface region was held isothermally at 275 C and typical on-column injection volumes were 2 1. Mass Spectrometer - A Kratos MS-50 mass spectrometer operated in full scanning mode was used to acquire GC/MS data. The spectrometer was tuned to 10,000 (10% valley) dynamic resolution and scans were taken at 3 seconds per decade over the mass range scan. /Z = 600-150 resulting in a 4 second cycle time Perfluorokerosene (PFK) was used as a mass standard for high resolution scanning and was introduced concurrently with the GC effluent into the source of the mass spectrometer which was operated in electron impact (El) mode at 70 eV, 8kV accelerating voltage and a source temperature of 250 C. Data was acquired during GC/MS runs using the DS-55 data acquisition system via the �preprocessor interface at a sampling rate of lOOkH z and stored on disk as sample-time data for subsequent mass conversion. Each run comprised ca 800 scans each of which contained data from the mass standard reference peaks and mass peaks generated by compounds eluting from the gas chromatograph. The file of sample-time data was mass converted after acquisition producing a file of mass measured peaks and associated intensities, the exact mass being computed for the unknown peak by reference to the mass standard peak with a precision of ca lOppm, The data system then allowed each GC run to be displayed in various graphical forms or as exact mass listings. Post-Run Data Processing To generate useful quantitative and qualitative information from the acquired GC/MS run, several data processing routines were employed. Firstly, sample-time data was mass converted to generate high resolution scanned data files. A total ion current (TIC) and exact mass chromatogram was then generated for mass ions of each compound group of interet along with a computer-generated worksheet. This worksheet then allowed the operator to select scan windows which encompassed GC peaks of interest. The scan windows were then fed into a software program which generated scan by scan exact mass-intensity reports ever specified mass ranges. These reports were then used to allow quantitation of the exact mass ions over the GC peak of interest by summing the intensity for each scan over the deviation of the GC peak. The facility to do this with software had not yet been developed for exact mass data. The resulting areas of the exact �mass chromatogram were used for guantitation and verification of ion abundance ratios. in Figures This process for a standard run is shown 1-27. Quantitation of PCDFs The only available labelled reference standard for PCDF was a [U-37 Cl.l-TCDF sample obtained from KOR Isotopes Inc. As can be seen from Figure 3 the material was not pure and contained several Tetra isomers. Previous work had indicated that it contained less than 2% unlabelled material for all PCDF and PCDD congeners. This material was therefore used as internal standard and provided a method for calculating recovery of the clean-up procedure. Native PCDFs were available for Tetra CDF, Hexa CDF and Octa CDF and these compounds were used for external standardization. A mixture of native and labelled PCDF was run each day and data was collected on samples to verify response factors and instrument performance. Quantitation of the samples was therefore performed using response factors obtained from the calibration run for Tetra, Hexa and Octa CDF. Response factors for Penta and Hepta CDF were linearly interpolated from adjacent congener responses. The recovery of each sample through the clean-up procedure was also *5 A calculated from the [U- C1.]-CDF response. Quantitation was therefore not isomer specific but represents a total quantity of each congener group and assumes equivalent responses for isomers within each group and the validity of the response interpolation for Penta and Hepta CDF. �Quality Control and Detection Limits The Mass Spectrometer was tuned to 10,000 (10% valley) Resolving Power daily using PFK as mass standard and High Resolution Calibration was performed before the start of each run. A standard injection of PCDF and PCDD reference compounds was then run and calibration of response factors was performed. Table 2 lists the standard runs used for quantitation over the period of ca 2 months indicating an overall RSD of ca 25% for the various measured response factors. Detection limits were also calculated using the standard runs assumming a typical GC peak width of 6 scans and noise level of 250 counts per scan for g a signal to noise level of /N=2. In addition for positive identification the 3 most intense ions in the parent cluster must show close agreement to the theoretical ion ratios and exact masses, retention time must agree with standard runs and mass spectrum obtained must match that of the standard reference spectrum. �Results and Discussion Table I lists the quantitation for PCDFs in the 16 samples collected from each floor of the Binghamton State Office Building and the soot homogenate used for animal toxicology experiments. Recoveries based on [U-37Cl.J-Tetra CDF are reported and values for the samples are not corrected for recovery. The significance of these data and correlation with other testing is presented elsewhere (9). Data from three GC/MS runs are presented in more detail to indicate the information that is available for each sample run. The extract of the soot obtained from the 5th floor and the soot homogenate is presented to be representative of the sample data and a standard used to quantitate the soot homogenate is also shown. Figures 1-27 correspond to the standard run and show the Total Ion Current (Figure 1) and exact mass chromatograms for each compound and congener present. The tabular reports (Figures 2 and 10) are worksheets which allow the analyst to enter the scan ranges visually determined to contain the components for quantitation. Quantitative reports are then generated for these scans which give the exact mass and intensities of peaks within the specified mass range. These have been included for the Hexachlorodibenzofuran (Hexa CDF) standard Scans 437 to 446 over the time period when this compound was eluting from the GC (Figures 17-27). Summing the intensities for the three most intense ions in the parent group, i.e., 371.8236, 373.8207, 375.8177, give the total intensities of 113,735, 211,168, 158,794, respectively which agree well with the theoretical ion �ratios. The intensity of the 100% ion (373.8207) is used for computing the response factor and quantitation of samples. This method of peak integration was used for the quantitation of GC peak area for all standard and sample runs. Scan were only included in the summation if the exact mass of the 3 ions was in good agreement (better than lOOppm) and ion ratios were consistent with theoretical ratios (Table 4). Figures 28-37 correspond to the GC/MS data from the 5th floor sample processed in a similar way to the standard. Figure 28 is a total ion current chromatograph the most intense GC peak being due to diisooctylphthalate is a contaminant found in all sample runs and to a lesser extent the standard runs. Figure 29 shows the exact mass chromatograms for each of the Cl-,-Clo 0 J congeners of PCDF simplified by plotting only the most intense ion in the parent group. Figures 30-34 are mass spectra obtain from each congener group identified in the exact mass chromatograms. Figure 30 indicates the presence of Pentachloronaphthalene (exact mass 299.8648) as well as Trichlorodibenzofuran (exact mass 271.9376), in the spectrum of scan #242. Polychloronaphthalenes appears to be major components in the soot samples and are also found in the soot homogenate sample. Figures 38-51 correspond to the data obtained for the soot homogenate sample. The total ion current chromatogram again indicates as a major GC peak the diisooctylphthalate (Figure 38). Figure 39 shows exact mass chromatograms for PCDFs and Figures 40-45 give typical full scan spectra for each congener. 46 indicates the exact mass chromatograms for Figure �Polychloronaphthalenes with intense peaks for Cl,., Cl, and C17 Chloro congeners. Figure 47-51 again shows full can spectra for each of the Chloronaphthalene congeners. Quantitation has only been made for the PCDPs but as indicated qualitative evidence for Polychlorinated naphtahlenes has been shown and trace levels of Pentachlorobiphenylenes (see Figure 36A) at exact mass 323.8647 we indicated in the 5th floor sample. Carbon and solvent blanks showed no evidence of contaimination at the detection limits indicated. The vast amount of high resolution data is continuing to be reviewed to complete the data analysis and software development continues to aid in the process of data reduction and quantitation. �References 1. R.M. Smith, P.W. O'Keefe, D.L. Hilker, B.L. Jelus-Tryor, K. Aldous, NYS Health Dept., Toxicology Institute Report, Feb. 20, 1981. 2. C. Rappe, H.R. Buser and H.P. Bosshardt, CIPAC Symposium, Baltimore, June 5-6, 1979. 3. C. Rappe, N.R. Buser, D.L. Stalling, L.M. Smith, R.C. Dougherty, Submitted to Nature. 4. B. Janson and G. Sundstrom, Dioxins and Related Compounds in the Environment, Rome, October 22-24, 1980. 5. R.M. Smith, P.W. O'Keefe, J. O'Brien, D. Hilker, K. Aldous, B. Jelus-Tyror, NYS Dept. of Health, Toxicology Institute Report, June 2, 1981. 6. R.M. Smith, D.L. Hilker, P.W. O'Keefe, S. Kumar, J. O'Brien, B.L. Jelus-Tyror, K. Aldous, NYS Health Dept., Toxicology Institute Report, October 1, 1981. 7. C. Rappe, University of Umea Report, 1981. 8. D.L. Stalling, Columbia National Fisheries Res. Lab., Preliminary Report, March 31, 1981. 9. G. Eadon, K. Aldous, G. Frenkel, J. Gierthy, D. Hilker, L. Kaminsky, P. O'Keefe, J. Silkworth and R. Smith, NYS Health Dept., Toxicology Institute Report, March, 1982. �TABLE I Concentration (ppm) of Polychlorinated Dibenzofurans in Soot Samples Taken from the Bing Floor # PCDFs4 Tetra CDF 1 2 3 4 2.5 5 44 6 5.1 7 77 8 9 1 0 35 160 47 9.6ng 1.9ng 6.5ng 0.06 1.8 37 10.7ng 3.8ng 7.2ng Penta CDF <0.06 <2.0 3.2 55 8.0 75 40 220 55 Hexa CDF <0.07 <2.4 2.0 36 3.0 14 16 140 28 Hepta CDF <0.08 <2.8 0.2 12 0.6 1.5 7.1 51 2.1 Octa CDF <0.09 <3.1 <.2 4.2 <.2 -- 1.4 17 0.56 29 22 16 20 22 41 50 "A. C1 Tetra CDF (ng)1 5 Recovery %' 4.4ng •"•Internal standard amount recovered (ng) ^Quantitatecl as Arochlor 1254 0 Data lost due to instrument malfunction 4 Data unconnected for recovery ^Recovery based on -^Cl Tetra CDF internal standard 8.6ng 14.2ng 49 35 �TABLE 2 Reproducibility of Standard Runs Response Factors [Counts/ng] Date of Run Tetra CDF C14 Tetra CDF Hexa CDF Octa CDF 1/26/82 1380 4938 771 630 1/29/82 1193 3987 834 913 1/30/82 1475 4904 815 660 2/10/82 1803 5358 953 793 2/15/82 1306 4777 919 754 2/15/82 1802 6568 2/16/82 1354 5926 1225 837 3/3/82 1880 7017 1339 1075 3/4/82 1961 6690 1492 1178 3/5/82 1978 6794 1271 1193 3/10/82 2616 9606 1700 1336 3/11/82 2293 8622 1472 1147 Average Response 1753 6265 1163 978 430 1645 320 217 25 26 27 22 Standard Deviation %RSD — 874 �TABLE 3 Average Detection Limits For PCDFs" Average Response Factor counts/ng DL(ng)S/N=2 'PPM in Soot 0.17 Tetra-CDF 1753 1.7 37 6265 0.5 Pent a -CDF 1458 2.0 0.2 Hexa-CDF 1163 2.6 0.26 Hepta-CDF 1070 2.8 0.28 978 3.0 0.30 C14-TCDF Octa-CDF "Based on GC peak width 6 scans noise level 250 counts/scan "Assuming an injection volume equivalent to lOng of extracted sample �Table 4 Exact Masses and Intensities of Molecular Ions of Chlorinated Dibenzofurans Chlorination Number Exact Mass (Molecular Formula) (3) Monochloro 202.018539 100.0 C 204.015590 32.5 235.979568 100.0 237.976618 65.0 269.940596 100.0 271.937647 97.5 373.934697 31.7 303.901625 76.9 305.898675 100.0 307.895726 48.7 337.862653 61.5 339.859704 100.0 341.856754 65.0 371.823682 51.2 373.820732 100.0 375.817783 81.2 407.781761 100.0 409.778811 97.5 411.775861 52.8 Octachloro 441.742789 87.9 C 443.739840 100.0 12H7OC1 Dichloro Trichloro Tetrachloro Pentachloro Hexachloro Heptachloro 12°C18 Intensities �DS-55 CROSS SCflN REPORT, RUN: TD1S1 -5- f *- f\- 1 ~ a * 'CA* TIC 38:00 .i i i i t i I i i i i i t I i i I t i i i i i i t I i i ii i i i i i t i i l i t i i i 44:49 t » i .1 l i t i i i I t i i i i i 80 70 68 50 43 30 10 i i i i i t i i i I i i i i i i 1 100 |- i i i • ! i- 1 i i i i i i i 1 i i-i -i i i r i i T-I i " i i i 200 300 400 50Q 680 �<T*\ T O»»»«j»»fcc»\0S at TfiBLE OF^POlYCHLORODIBENZOFURflN MftSSES, INTENSITIES ftND SCftN" NUrCERSCFROM XSCftN DflTfl) TRICHLORO- 270(100.0),272(97.5) SCANS: REFINED SCfiNS: DICHLORO- 236(180.0),238(65.0) SCANS: : REFINED SCflNS: MONOCHLORD-202(130.Q),204(32.5) SCftMS: >;, REFINED SCflNS: TETRftCHLORO- 304,(76.9),385(100.0),312(INTERNAL STfiNDftRD) SCflNS: ^^.^c,- ,'>Vt30V3V../) REFINED SCANS: PENTftCHLORO- 333(61.5),340(100.8) SCfiNS: j- REFINED SCfiNS: HEXflCHLORO- 374( 100.0),376(81.2) SCflNS: i 3 5 " ••;.,' (m'--i'^)i-^I REFINED SCRHS: HEPTflCHLORO- 493(100.0),410(97.5) SCflNS: . REFINED SCAMS: OCTflCHLORO- 444(100.0),442(87.9) SCftNS: t-ID-^D^'J-v'?- .- ,-.).') : (\Jcivt c- REFINED SCftNS: T*i LD f -— �, 3v Ot )S-55 "CROSS SCRN REPORT, RUN: TDlsl iero*. T . U it 304 L88 # 385 I—1—1__! 0 312 i ' i + TIC ' ' I ' i—I I I t - t 1—!_!—1_J I—I—!—I—I—L_l 90 80 78 60 50 48 30 20 18 i—T—T—rn—i—i—!—i—(—1—i—i—i—i—i—i—i—T—i—i—i—i—i—i—i n—i I t I t 1 I I I I 1 I 1 I I I I 1 1 I I t I • I I t t t • t t �f ' 3 . THIS 1.306 CTIO4723S8, 100%=6655G3 El 100 312 70 SO 50 40 30 20 15S 10 247 209 , , , i , , I 200 , 230 493 43 i i , 31 rr!-rfrflri'l V'rmV'. mSVr n 4m i I I ii i I :i 100 150 ?75 i j f n V i rfn r ; t rVrr i i M i MI 450 500 �iv\ T i\ * TD1S1.314 CTIC=S72688, 100^=86756] El ' 312 18B 78 60 50 » 28 173 10 CD 247 -1 en 210 !• i ... | I I ! I I M M ' ] iTT'l 103 ISO ,i . 1 I I 1 j 1 00 250 309 i_i . il. i -i . it. -.1 i i i i - . . i . . i i. ,.h it i...t t . . . ] iii 11 ij i iiiii iii iii i i iiii ri11 1 1 ii i ii 350 AQQ 450 �S cK/"0vw.vToevf T - C& F, JJS-55 CROSS SCAN REPORT, RUN: TD1S1 * 338 * 348 0 374 a 376 $ 408 % 410 + TIC 10:44 31:11 180 38:80 I I !..__!_ I I I 4:9 44 I I I I t...._! 1 ] I I 1002=737424 93 lG8?i=56484 88 78 sa 58 4B 38 28 18 8 kj.,* <U<h i ^ » * MPW\M_oA^^>A....|F> t_ ro OT ('••> inn i —i —i —i —i —i —i —i —i —i —i —i — i —i 200 A r—|—\—r""f—I* i t—i—i 300 -i—i—i—r1-!—i—r—r 400 500 i—|—i—r—i—r—T—r 600 �TDIS 1.442 CTIC=656808, IOOri=5S0453 El 100 374 88 70 J 38 28 _ 241 155 IE 8 18 207 i i i i i i i i i 100 r ]150 ' i 'i'-"/ 1 < I i.!,1TT f,nfl.t~i'i 1 i 'T 209 J I II p i i ri I~TTTI rr 489 459 I.. , i. I I IT 509 �DS-55 CROSS SCHN REPORT, RUN: TD1S1 # 442 ;;; 444 + TIC 10:44 *™ J ! I 17:33 I I I . I . I I t I I 24:22 I - -I I I I I I l i l t 31:11 I ' » ! ' ' ' ! ! 1 lOOr: =737424 i 100;; =20464 80 78 50 W^MJV^ 30 20 10 f _ . r ...—J—r 33:00 1 1 1 1 ' I I I I 1 44:49 1 1 1 ! l.....,t.,, I I . ,I I t I I I �TD1S1.622 CTIO581008, 100^=346263 El 100 90 444 80 70 G3 58 207 156 20 379 10 472 - ITT I 11I I I 1I 1 I j I 100 150 200 250 3CQ 400 450 508 �TftBLE OF POLYCHLORODIBENZO-P-DIOXIN MftSSES,INTENSITIES ftND SCflN NUMBERS(FROM XSCflN DflTfl) TRICHLORQ-283(100.0),235C37.5) SCRHS: ^ SICHLORO-252(103.0),254(65.0) SCftNS: £ MONOCHLORO-218(100.0),220(32.5) :X- REFINED SCftNS: REFINED SCftNS: REFINED SCftNS: TETRftCHLOP r '-72G(76.9),322(182.8),334(INT.STD.) SCPNS: . REFINED SCfiNS: N {^«e MTO. 6vv4f>vl WTtDJ*") PENTACHLCRO-356( 160.0), 358(65.0) SCflNS: ^ REFINED SCflNS: HEXftCHLORQ*3SWtlB8.0),392(81.2) SCftNS: . , « / M / , e - ., X U to- ^7-5 (^l-t^ti-Vot?) HEPTftCHLORO-424(lB0.0), 426(97. 5) SCftNS; /M, <- REFINED SCflNS: REFINED SCftNS: OCTftCHLORO-453(B7. 9), 4GO( 109.0), 452(65. 0),472( INT. STD.) SCftNS: . REFINED SCHNS: �TCD{> DS-55 CROSS SCHN REPORT, RUN: TD1S1 * 320 toe * 322 0 334 + TIC 4:80 i 18:44 t i i t i t i t L i i 17:33 J r t i i t i f f i 31:11 24:22 ! I I I I I I l i i i t 38:< 44:49 i i i I i i t t i t i i i I i i i i i i i t i I i i i i t i 1882=737424 90 1802=66155 88 78 68 50 toWfyW 4B 38 28 18 ' ^AAvWWjvAj^JUA 3. ]—i—i—n—i—r~i—i—r-*|—r—i—r 1 100 200 "i-i "f | r i 300 r. n i rVi—A—fM^_«_ .tfUVvJUI—A <D CO C' /U_A-/lA fn ] i i- i - .rA i i i i. f\ 11 1 „,*! . - .n*.i ' i i ti * i r i i 1 p 480 500 T I I 600 1 I I I T �Fid.. TDISI.325 CT!C=S78848, 10BX-65720] El 103 322 9B 70 60 58 30 259 28 160 194 10 1 229 0 ! J/ M>! i i i i i i i i i"( j l I J ,'*! 100 200 150 ^Vrh^Hfr1! 250 300 'n i I'-i'n pm i f-rf 350 498 • 450 500 �fc, ssDS-55 CROSS SCAN REPORT, RUN: TD1S1 * 356 * 358 0 398 & 392 $ 424 X 426 + TIC 10:44 17:33 31:11 38:80 44:49 100 1002=737424 90 1082-17096 80 78 68 53 40 39 28 18 100 I—I—I—1 I—I—1—I—I—I—I—I—I—I—I—I 200 300 1 I 59Q I ft I I . I. f<I , I . !. I y.. I . I . I I 603 �TB1S1.4S6 CTIC=42S944, 100^=139853 El 100 390 80 70 68 50 207 327 38 262 28 243 10 282 163 1 150 'T200 " ^r-m-' il M F T" 2'50 o u 431 300 V 1/JfWf innr i ii!V 350 400 IT UJ I I I I i il T 450 I I I I 500 �TD1S1.539 CTIC-413920, 1002*170953 El 1GO 426 90 80 70 207 50 38 2S9 361 10 298 H 158 323 ti-WW 15G 200 300 JihUuii 350 'inn I i [ I T i l 450 i i ii 500 �DS-55 CROSS SCRN REPORT, RUN: TD1S1 * 450 tt 460 0 4G2 & 472 + TIC ] 0:44 17:33 24:22 3S:0Q 31:11 103 i 44:49 i i l i i i t t l t t f t l t t t t 10Q;<=737424 93 1092=7307 BO 78 GO i 50 1 ~ i if v/V'*' H/ WHuA^ 40 Ji *«J il i \ *jsv t \V/f \\'\ u IjVVi/i j ? }/ 1 \V V ^Yt^^\}'i^jl ' ' ' i j 30 i .: 20 10 1 _ .1 1* 0 . f i i l 1 ,\ il i / i fi I j i (j t f. ,\ > i A ,\ \ i i ! /, /, !. j '. 1! .1 t. b'jfj �JD151.G22 CTIC=50I008, El iee 444 90 -I 70 60 -I 50 33 207 - 15S 20 379 309 472 a u 222 18 II I ISO 200 350 1QO 450 500 �i* DP0:TD1S1.MS O SCfiN: 437, 3/11/02 14:51 lONISfTTION: El \V\TUA: NO. PGfiKS: 308/ 11 BflSE/NKEF INT: 38693./ G315. TIC: 350512./ 30193. P. MOSS RHNGE: 149.9904 RETN TINE/MI5C: 33:43/ PEftK NO. 1 2 3 4 5 G 101 182 103 134 185 1QG 107 103 103 110 111 112 113 114 115 116 117 118 MEASURED fiHGS 31376. 33530. 33033. 147089. 103009. 1941559. 302 . 0065 301.SG92 3:11.0130 300.9761 300.0102 379.3008 370.9742 377.8208 376.3074 37G.040G 376.0304 375.0275 375.0317 374.0165 373.9791 373.G45I? 373.3194 371.0334 NO. POINTS G G 5 G 5 5 0 8 8 17 G 5 8 21 5 4 4 25 0 4 5 0 12 21 G54.9G01 53/ O/ t>r Ct\ V A*-. 50 fl!30QLUTE INTENSITY 4GO. 310. 292. 344. 243. 255. 713. 543 . 3G5. 2558. 376. 205. 745. 1617. 270. 142. 154. 6101. 729. 151. 228. 1903. 4943 . 6315. ^- p^»V.» "A INT. BflSE 1.2 0.8 0.0 0.9 0.6 0.7 1.8 1.4 0.9 G.G 1.0 0.5 1.9 4.2 0.7 0.4 0.4 15.0 1.9 0.4 0.6 5.1 12.0 1G.3 HREF 11.3 5.0 6.0 3.2 25. G 44 . 2.2 2.4 9G.6 11.5 2.4 3.G 31.5 70.3 100.0 ION 0.1 0.0 0.0 0.1 0.0 0.0 0.2 0.2 0.1 0.7 0.1 0.1 0.2 0.5 0 0 . 0 0 . 0.0 1.7! 0.2 0.0 0.0 0.G*! 1 . 4-:1.0! ^ A\\ )A 4U M* �DP0:TDlSl.nS SCnN: 430, 3/11/02 14:51 IDNISnilOH: El NO. PEHKS: 301/ 7 BOSE/NREF INT: 40093./ 120GO. TIC: 35BG5G./ 13803. MASS RANGE: 143.9304 - 654.3601 RETN TII-E/MISC: 33:47/ 69/ 4/ 47 PEHK HO. NEriSURED 1 2 3 4 5 6 7 8 101 102 103 104 105 106 107 103 103 110 111 112 113 114 1 15 116 117 1 10 113 32446 . 33041. 34067. 76607. 102010. 105693. 135216. 195009. 38 1.9746 3G 1.7038 301.0170 300.9761 300.9263 379.0357 370.0160 377.0127 377.0045 376. OS 39 375.0533 375.0025 375.7232 374.9751 374.0092 373.9663 373.3103 372.0033 371.0035 mss NO. POINTS 5 4 4 4 5 5 4 3 6 4 6 17 6 6 6 17 5 12 6 21 5 5 10 0 25 14 21 % INT. X INT. K TOT. ION NREF BflSE _ 0 0 . * 225. O.G 0 0 . 150. 0.4 0.0 140. 0.4 0.0 151. 0.4 8.0 0.7 274. 0 0 . O.G 243. 0.0 171. 0.4 0.1 1.2 472. 0.1 379. 0.9 0.0 1.2 149. 0.4 2.3 0.0 0.7 202. 1.1 ' 10.1 4050 . v 3.3 0.1* 365. 0.9 0.1 3.7 442 . 1.1 0 0 . 0.6 1.9 228. 0.8 7.2 24.0 2098. 0 0 . 231. 0.6 1.9 0.5! 15. S 1304. 4.7 0.0 0.6 1.9 220. 06 . 4 2.9 26.0 10424. 1.7 0.1 0.5 286. 0.0 209. 0.7 1409. 12.3 0.4 3.7 5.6 0.2 670. 1.7 3.4 100.0 12068. 30.1 0.4! 4.0 13.3 1603. 37.9 1.3 4560. 11.4 R8SOLUTE INTENSITY �DP8:TD1S1.NS SCftN: 439, 3/11X82 14:51 IDNISflTIDH: El NO. PEfKCO: 323/ G BfiSE/NREF I N T : 41123./ 24250. TIC: 42GOG4./ 33GO. MASS RANGE: 143.9504 - G42.9G01 RETH TII-E/MISC: 33:51X 81X 3/ 50 PEH!< HO. 1 2 3 4 5 6 7 8 34 95 96 37 38 93 100 181 182 103 104 105 186 107 103 103 110 NEnSLJRED nnss 30024. 31417. 33002. 105320. 102959. 193934. 134529. 13G917. 383.594G 381.9915 330.9761 379.8131 379.917G 370.9053 370 . 0209 377.0433 377.0878 37G.047G 37G.0502 375.0139 374.0230 373.01G7 372.05'JG 372.0U9S 371.0170 NO. POINTS G 5 G 5. 8 4 17 4 4 5 21 14 G 8 10 18 17 0 10 25 21 25 4 12 25 RRSOLUTE INTENSITY 432. 240. 412. 195. 598 . 1G3. 791. 105. 1G4. 219. 5G35. 1161. 414. 703. 850. 1804. 7120. 574. 1345. 16640. 2347. 24258 . 170. 303. 14002. % INT. % INT. X TOT. ION DftSE NREF _ 0.1* 1.1 0.1 0.6 0.1 1.0 0.5 8.0 0.1 1.5 0.8 8.4 0.2 1.9 0.0 0.4 0.7 8.0 0.4 8.1 0.5 1.3 13.7 0.3 2.8 4.8 1.7 8.1 1.0 0.2 1.9 3.5 0.2 2.1 8.4*! 7.4 4.4 17.3 29.4 1,7* 0.1 1.4 2.4 5.5 0.3 3.3 3.9 49 . 5 GO. f, 9.7 0.G 5.7 5.7 100.0 59.8 0.0 0.4 0.7 2.4 4.1 0.2 3.3 34.0 57.7 �DPBrTDlSl.NS SCDH: 440, 3/11/02 14:51 lONIGHTlQH: E! NO. P!-:nKS: 354/ 10 DACE/HREF INT: 41393./ 36504. TIC: 513632./ 47000. MHSG RflHGE: 143.9904 - 654.3601 RETN TIME/NISC: 3 33:S5/ EflK HO. MEASURED 1 2 3 4 5 G 7 8 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 120 129 130 32345. 33642, 34077. 35731. 120190. 159326. 105341. 105505. 303.5280 30 1 . 9626 38 1 . 0270 309.3761 380.7943 303.2530 373.0384 379.7974 370.0180 377.8037 37G . 05 1 1 376.0105 376.0170 375.0150 375 . 6740 374.8268 373'. 0171 373.7535 372.0286 371.0229 mss NO. POINTS 8 G 5 4 5 5 D 4 5 8 5 25 8 5 10 12 17 35 10 17 4 29 0 25 35 G 17 25 71/ 4/ 47 OBSOUJTE INTENSITY % INT. BflGE 1.6 1.2 0.5 186. 0.4 0.5 203. 8.6 230. 0.5 215. 146. 0.4 0.5 204. 1070. 2.6 0.5 204. 3932. \/ 7.5 1.2 511. 0.6 261. 2.8 1147. 2.8 1167. 1650. 4.0 34.9 14440. 730 . 1.0 9.3 3853. 0.4 157. 64.8 26830. 0.9 358. 17.6 7277. 83.2 36504. 0.8 327. 7.7 3205. 46.2 19106. 674. 504. 210. % INT. X TOT. NREF _ ION 0.1* O.G 3.0 O.G e.i 1.4 0.7 3.1 3.2 4.5 39. G 2.0 10. 6 0.4 0.1 0.8 0.0 0.8 0.0 0.0 0 0 . 8.0 0.2! 0 0 . 8.6 73.5 1.0 19.9 100.0 0.3 0.8 52.3 8.1 0.2* 0.2* 0.3 2.8 0.1* 0 . 0* ! 0.0 5.2 0.0 1.4! 7.1 0,0 8.6! 3.7 �r~t A • BP0:TB1S1.MS SCrtN: 441, 3/I1/C2 14:51 : El NO. PEHK'J: 3G2/ 10 BSSE/Hk'EF INT: 52611./ 4GGD6. riC: 5G1264./ 25336. MftSS RflNGE: 143.8904 - 654.9G01 RETN TliiE/tllSC: 33:59/ 81/ 2X 41 PEHK NO. 1 riEftSURED iinss 107 ICO 13S83. 1 5030 . 30657. 31120. 32338. 117G1G. 194130. 135G95. 383.8052 302 . 9759 301.9015 330.3761 3C0.02GG 109 110 111 373.8181 370.8106 377.0165 2 3 4 5 6 7 0 184 105 106 112 377. 1345 113 114 115 116 117 118 119 12B 121 376.0139 375.8207 375.75G3 374.3701 122 123 124 125 126 127 374.8225 374.2363 373. SGI 5 373.8134 373.7541 373.4754 373.2477 372 . 0404 371.3722 371.0194 371.5324 NO. POINTS % INT. ABSOLUTE BflSE INTENSITY G 0 5 4 0 6 10 4 334. GIG. 234. 147. 404. 350. 503. 143. 8 G 17 552. 323. 1169.. 3035v^ 645. 2513. 17 8 21 17 29 1G021. 4 14 183. 2692. 23 4 0 21 G 34202 . 158. 471. 3507. 4 35 G 4 G 17 5 25 5 2157. 294. 150. 4GG9G. 441 . ISO. 375. 2157. 272. 21210. 243. 0.7 1.2 0.4 8.3 0 0 . 0.7 1.8 0.3 1.0 0.6 2.2 5.9 1.2 4.8 4.1 32.0 0.3 5.1 65.0 0.3 0.9 G.7 0.6 0.3 88.0 0.8 8.3 0.7 4. 1 0.5 40.3 0.5 n INT. NREF _ ?i TOT. ION 0.0=* 1.2 0.7 1.4 5.4 4.6 3G.0 0.4 5.3 73.2 0.3 0.1 1.0 0.0 7.5 0.6 0.6 0.1 0 0 . 0.3 10Q. 0 0.9 0.4 0.8 4.6 O.G 45 . 4 0.5 0.0 0.0 0.0 0.0 0.0 8.0 8.1 0.1 0.2 8.6 0.1 0.4 0.4 3.0 0.8 8.5 6.1 0 0 . 8.3 0.8 8.0 8.0 0.4 0.8 3.0 0.0 �BPB:TDlSl.riS .SCAN: 442, 3/11/02 14:51 IGMISflTION: El NO. PEAKS: 397/ 42 BflSE/HRLF INT: 5G045./ 5G043. TIC: 656330./ 276120. 13SO RANGE: 149.9904 - 654.9201 IETN TiriE/riISC: 34: 3/ SO/ 2/ 51 PEftK HO. NEftSURED I 2 3 4 5 G 132977. 4 1^0512. 103174. 5 6 6 mss 1S5757. 19G04G. 19G572. ~7 I 19G843. 110 111 333.0175 112 113 114 115 116 117 110 119 381.0945 128 121 122 123 124 125 126 127 120 129 130 131 132 133 134 135 136 137 133 139 140 381.9047 301.7877 380.3761 300.0361 303.8097 383.5241 373.0450 379.0074 370.9777 370.0209 377.9242 377.0139 377.4177 377.0211 376.0448 376.8120 376.6392 375.8207 375.7563 374.9383 374.0636 374.8249 374.5739 373.0232 373.7567 373.3094 372.0259 37 1 . 8393 370.I395G NO. POINTS 4 5 6 5 12 5 6 25 8 4 6 8 ABSOLUTE % INT, Z INT. * TOT. HREF ION INTENSITY BflSE 174. 257. 455. 29G. 207. 218. 334. 206. 1219. 247. 290. 732 l.V" 637. 172. 423. S09. 0.3 0.5 8.8 0.5 0.4 9.4 e.G 0.5 2.2 0.4 0.5 13.1 1.1 0.3 0.8 1.6 17 10 4237. 473. 7.6 21 5 25 4 6 3746. 6.7 0.5 33.7 0.3 0.5 2.8 7.3 8.3 77.5 0.4 0.3 2,7 12.5 8.3 10 12 4 29 5 0 0 17 4 29 6 6 17 35 4 2G3. 13075. 158. 290. 1505. 4116. 149. 43409. 212. 442. 1506. 7016. 172. 56045. 439. 406. 5474. 34259 . 153. 0.0 100.0 0.8 0.7 9.3 61.1 0.3 — 0.5 0.4 0.5 1.1 0.3 0.3 1.6 7.6 6.7 0.5 33.7 0.3 0.5 2.8 7.3 0.3 77.5 8.4 2.7 12.5 0.3 103.0 0.0 0.7 9.8 Gl.l 0.3 8.05= 0.0 0.8 9.0 0 0 . 0.0 0.1 0.8 0.2 0.0 e.0 1.1 0.1 0.8 0.0 0. 1* 0 . 6* ! O.t) O.G! 0.0 2.9! 0.0 0 0 . 0 . 2* 0 . 6* I 0.8 6.6! 0.8 0.0 0 . ?.# ! 1.1*! 0.0 3.5! 0.8 0.1 0.8! 5.2! 0.0 u c �):T%1S1. DP0:TD1S1.MS SCftN: 443, 3/11/02 14:51 l O N I S A T I O r i : El NO. PfmiCJ: 314/ 7 BftGE/NREF I N T : 41005./ 14330. TIC: 379200./ 943G. MPS5S RnHRE: 143.9904 - G53.0029 RETN TINE/NISC: 34: 7/ 03/ O/ 41 PEAK NO. MERSURED MHSG j 2 3 4 5 G 90 99 100 4H654. 120001. 175536, 194751. 135363. 193454. 302.8541 331.9636 331.GDG2 331.6930 300.3761 379.0144 379.5494 373.9053 373.0759 378.3295 377.0033 376.0093 375.0207 374.3054 374.0201 373.0726 373.0137 373.7593 372.8559 372.0143 372.Q1GG 37 1 . 0790 371.0150 101 182 183 104 185 IBS 107 138 103 110 111 112 113 114 115 116 117 118 119 120 NO. POINTS 6 4 5 5 5 5 6 3 6 0 17 6 4 4 0 G 29 12 23 5 14 6 25 4 6 14 6 5 21 ftDSOLUTE % INT. X INT. HREF BflSE INTENSITY _ i.e 431. 0.5 200. 0.6 235. 0.0 347. 0.6 233. 0.7 282. 2.7 0.9 396. 433. 1.0 2.3 O.S 341. 1.4 4.0 575. 9.4 3912. 2.5 365. 0.9 1.2 0.4 170. 107. 0.4 3.6 1.2 510. 1.0 0.6 260. 16.9 40.7 7077, 4.2 12.0 1745. 25.3 72.0 10573. 0.5 200. 11. G 40 . 1679. 3.0 1.1 443. 34. G 1QO.O 14530. 1.4 204. 0.5 2.2 0.8 317. 6.0 074. 2.1 2.6 301. 0.9 1.6 233. 0.6 54.4 10.9 7301. TOT. ION 0. 0. 0. 0.0 0.1 8.0 0.1 0.1 0.0 0.2 1.0 0.1 0.0 0.0 0.1 0.0 1.3 0.5 2.0 0.1 0.4 0.1 3.8 8.1 0.0 0.2 0.1 0.1 2.1 o �*.. DP0:Tnisi.MS SCON: 3/11/02 14:51 lONISHTIOH: El NO, PEOKS: 278/ 2 DftSE/NuEF INT: 43571./ 7635. TIC: 330112./ 2553. I^SS RftllGE: 149.SS04 - 654.0452 RETH TIME/MISC: 34:ll/ G5/ I/ 56 PERK NO. 1 2 3 4 5 6 90 91 32 93 94 95 96 97 98 99 100 181 132 103 194 105 186 287 103 103 HEnSURED MftSS 13514. 31749. 34225 . 92946 . 194961. 195553. 384.4293 383.8317 302.9715 301.0258 300.9761 379.8166 378.9773 378.0634 377.8338 377.315B 376.8212 375.0262 374.9922 374.8219 373.9602 373 . 8244 372.C190 371.5204 371.8335 371.6604 MO. POINTS ABSOLUTE INTENSITY 6 5 6 6 10 5 5 5 5 12 17 6 5 5 25 4 5 25 4 437. 276. a 8 21 0 5 17 4 380. 314. 646. 250. 256. 213. 258. 715. 5089. 314. 272. 268. 2387. 191. 305. 4512. 140. 326. 627. 7635. 363. 277. 3360. 174. X INT. % INT. ?{ TOT. ION HREF BftSE _ 0.1* 1.1 0 0 . 0.7 0.0 0.7 8.3 0.1 0.2 1.6 0.0 0.6 8.0 0.6 3.4 0 0 . 2.8 0.5 3.4 fl.fi 0.6 0.2 1.8 9.4 1.5 12.5 0.1 0.8 4. 1 0.0 0.7 0 0 . 0.7 3.5 0.7 5.9 31.3 0.1 0.5 2.5 0.0 4.0 0.8 1.4 11.1 59.1 0.0 0.3 8.1 8.8 4.3 0.2 8.2 1.5 2.3 100.0 18.3 0.1 4.8 0.9 0.8 3.G 0.7 44.0 1.0 8.3 2.3 e.i 0.4 �PP0:TD151.M3 SCflN: 445, 3/11/02 14:51 TON I G O T I O N : El HO. PEHKS: 273/ 6 BaSE/HREF I N T : 44193./ 3419. TIC: 333G64./ 10673. MflSS RflHGE: 149.9904 - 654.2093 RETN TI1G/NISC: 34:15/ 72/ 3/ 41 t-EHSURED HftSS • HO. POINTS ABSOLUTE INTENSITY : INT. BHGE % INT. NREF X TOT. ION _ 1 2 3 4 5 6 94 95 96 97 90 99 180 181 1B2 103 184 105 106 107 108 103 14750. 31467. 33745 . 93326. 113296. 102609. 3C i . 9603 300.9761 \ 300.9513/ 30:0.0020 370.9693 377. 7965 376.G327 375.8399 375.0062 374.0065 373.0586 373.0129 372.0947 371.9090 371.0300 370.9711 8 6 6 4 4 8 4 14 0 13 6 6 4 0 14 8 10 14 B 4 21 5 462 397 366 151 174 464 134 3245 357. 350. 175. 407. 3419. 561. 1800. 3245. 408. 167. 2344. 204. 1.0 0.9 0.0 0.3 0.4 1.0 8.4 7.3 4.3 0.5 0.3 0.0 0.4 1.1 7.7 1.3 2.3 7.3 0.9 0.4 5.3 0.5 0.1* 5.7 55.3 G.5 10.2 5.1 14.2 100,0 16.4 29.2 94.9 11.9 4.9 68.6 6.0 0.1 0.1 8.0 0.1 0.1 0.1 1.0;!0 . G:::1 0.0 0.1 0.1 0.1 0.1 1.0! 0.2 0.3 1.0 0.1 0.1 0.7 0.1 �DPQ:TDTS1.MS SCflN: 44G, 3/11/02 14:51 lONISnTIO!!: E l NO. P!£n!<3: 259/ 0 8nSE/NREF : INT: 42934.x 3739. TIC: 307584./ 14414. MSSS RflNHE: 143.9904 - 654.9601 RETN TIME/MISC: 34:20/ 73/ I/ 38 PEOK HO. MEASURED HflSS HO. fiBGOLUTE n INT. % INT. POINTS INTENSITY BH3E NREF 4 G 5 G G 6 6 10 4 6 10 4 25 8 5 6 8 f\ 4 25 5 10 17 6 G 8 165. 504. TOT. I OH _ I 2 3 4 5 6 7 30 91 32 93 94 95 96 37 98 33 100 101 102 103 1G4 185 10G 107 100 32271. 33033. 33C22 . 1204S3. 134800. 195273. 136530. 3Q3.7321 303.0029 302.3130 301.9313 301.7953 3G0.9761 379.9918 379.0442 379.8212 370.9361 377.9578 377.8260 375.0229 373.9038 373.0603 373.0126 373.5048 372.0154 371.0227 217. 209. 313. 352. 2^6. 1392. 135. 49 1 . 45 1 . 160. 3027. 516. 190. 333. 420. 159. 140. 2678. 219. 530. 2255. 334. •430, 670. 0.4 1.2 0.5 0.5 0.7 0.8 0.6 3.2 0.5 1.1 1.1 0.4 7.1 1.2 0.4 0.8 1.0 0.4 0.3 G.2 0.5 1.4 5.3 0.9 1.1 1.6 37.2 5.2 13.1 4.3 13.0 5.1 9.0 11.2 4.3 3.7 71.6 5.9 15.5 GO. 3 10.5 13.1 17.9 0.1 0.2 0.0 0.0 0.1 0.1 0.0 0.5 G.O 0.2 0.1 0.1 1.0 0.2 0. 0. 0. 0. 0.0 0.9 0.0 0.2 0.7 0.1 0.2 0.2 �DS-55 CROSS SCflN REPORT, RUN: FDS3 + TIC ,„, . 4 : 0 8 10:44 17:33 24:22 ^c 31:11 38:60 44:49 51:38 58:27 90 89 79 60 50 40 30 20 10 108 T" n~ TT-T"T"r~r"i~"r T~T~ TTT 200 300 300 �.'• ari> 'BS-55 CROSS SCflH R E P O R T , RUN: * 270 w 366 0 346 100. 4:Q0 10:44 17:3? 24:22 100^=77948 90. C. :11 33:00 44:49 51:33" 53: 27 B0e 600 revj j 1 80 70. 60. li 40. 39. 19. , n 1 1.A.A i r . -i & i i if i i L* $v \ i i 50. ^Afvi^H*!i^^^..von-^uY«i^wi*V J Ar ' y^/| VVi^M^, L 1 ^ f i^,. iM . ^.-...J^T/ W^^vw^^Mi i 100 see see 400 R 3 _£'%<& HS-55 CROSS SCflH R E P O R T , R U M : FBS3 ~ " * 374 * 408 0 444 + TIC 16:44 17:33 24:22 31:11 33:00 100 4:08 90. ^100/. = 2972736 ~ 44:49 51:38 5r j;^^ ^^ 53: 27 j 100-^78156 80. 'see . 1 T 60. 40. 30. 20. 10. ALU^^^'V^-, Q. • s L fi'i / "' it * 1 i'lftLli " i_l *"""' i i T7| jlJ i ' 1 100 20Q 3ou 4 1 'J "Vv^jL- •^-»"1 l^jcjl j*-*»•i-^f.-L^.*- ^.-i--v^-. ._ TtC ' CG i ^5-£- — — J _ f — ^ -«> — ,, _ — - . - . 1. H 1 1 �:>VA or ^'V'J-\t\ 1> i-'i FDS3.242 C T I C = 6 1 2 9 9 2 , lv3Q':=315413 El 272 80 308 229 '150 280 250 i^HwmL—,,—. .—, .300 R . 00 F B S 3 . 3 1 1 C T I 0 7 9 S 7 1 2 , 10^=433433 F.I 3 06 400 '450 00 �•" Vj^CfK^v. "t~L*- c 'ti 3-' FDS3.311 C T I C = 795712, 10f1"i=4i3433 El 396 <%.CDF 90_ 4~ "_ 334 60_ 50_ 49_ 30_ 2«. 241 264 153 171 10_ i 1 jliJui^LLJi^^ lujL isL^^y i4^ 158 290 258 300 | | | 1 0 L I i 'n 4^V-MwWr^'l-^1HfVt^H-T--rtl '. 1 .' , )', 'l • 480 50 '450 '400 4 SO FDS3.454 CTIC=868320, 100'-S=772243 374 109 09 70 40 311 137 0 I 150 f76 I JJ^LwSf4fJri!t^^iijL^^v^^ 200 250 }> .309 « ^ . 5 3 0 001 �F B S 3 . 4 3 0 C T I C = 430960. 1 00-:- 1 1 532 ] El 106_ 374 "-, 80_ 7Q_ c.ft bu_ 59_ 207 49_ 30_ 239 350 ^'|7t t« 1* . 394 1®.. 1S2 493 425 0 R lijWilii.1uLiliLjiij i i r i i ] i t ri 00 ^ ~rr"r lL '459 �498 98 8. 8 78. 68. 58. 49. 39. 275 £0. 173 343 204 18. l 1E0 -2Qe 258 '380 L 3GO 400 .',,'. , j, Jl 4Se FDS3.520 C T I C = 524329, 1 9 ' = 19637] F.I 0'. 468 100. 90. 89 79 6,0 172 347 150 200 ^ see .300 bco Ueo teoo �J FDS3.617 CTIC=467296, 100^=86793 El 444 109 287 *• 90_ 89_ 70. S0_ 30_ 22 ^. c •»« 39? 381 253 10 0 331 16 9 M I U|i 1 JUs ,1 !R 150 '' TJ \ r r i 200 itii iLU Uilii ulli t ., ' It, rr^r" i i i ri^r J ri i i~n~T~ r i i ri r i i » 250 380 .350 •L&* iT IIllhl I I Hlilk |u(l " '400 ! 45 500 FDS3.629 CTIC=512112, 100^=10552] El 442 169 89 2Q7 50. 40 593 309 159 300 50 408 450 b00l �DS-5S CROSS SCflN REPORT, RUN: FDS3 * 266 * 390 0 334 & 368 + TIC 17:33 26:53 24:22 ISO 14:89 15S 34:36 38:81-3 �FDS3.316 100-^37243] El 100 386 90 7<3 50. 48. 264 30. 241 £0 153 192 171 e -^&Mvfc^ 160 130 200 220 240 260 80 28£ JUlUU .328 fWW "O Cl Q 3Q0 FDS3.258 CTIOS13163, 180':=195693 El 388 100 59 30 230 151 160 180 340 �FDS3.422 fTIC=9S7216, 368 90 68 298 3-48 316 76 £1 0 [.,.) i l-i ./• i-i Hvi'so ri JI^M,, ,'!'.•.*,'.' *n 4lJ 269 1 .-.-'Jhj.11 JLJ J "P 280 'i-i369 r r IT-' 1 ' l ' V h - t l 20 'S 40 i-l-f'-V' 368 1 1 i -r-r~i—i -380 408 �~-3-55 CROSS SCON REPORT, RUN: UD1S4 f TIC 1OQ 4:00 10:44 ! i i i i i i i i i I 17:33 t t i I i 24:23 31:12 38:01 44:50 51:39' I i i i i i t i i i I i i i r i ' i i t 1 i i i i i i i i i I ;; = 1172480 CO 70 60 50 40 '.'3 10 ri i . i i i i i | r r i i i i 'i r i •[ i i i i i i i r 100 2CO i | 'i i i i i—i i 520 i i i i i i i i i i i i—r~i 600 rco 53:25" �I "?n •"'l f-/v" • - \ *• k G-53 CROSS SCflN REPORT, RUN: UD1S4 - 3C1G 270 0 340 14:09 C, 374 S 400 X 17:33 24:23 100;; =39109 i i 1 m 1 * i a1 , \r.' 1 i i^/J ''. 'i h! / fr 1| ^f L. r'l 1 j f 1 1, "" I \'j 1 ft v f| ill H A . |l ^ - J \ k K / VA .. *. ^ . . ..... ft M \.AW W U,t. ^ itjl) ^^^ f^ ^ ^ Lu^-v^U. ^^^^_/,^_ 1 �fV-->. 40-'/£~0 fa*" SpJLc tU. TRF237.1 ETIC=53G59- 100;<=111743 E! tit 171 DO 70 GO 50 207 20 10 171 181 i i i i i i i i i r"i i i i i i i i i i i i i i ' i i "i""i i i i i i i i i i i i i i i i "i �. TEF292.ATIC=512i!2, 100^=164803 E! 100 306 90 80 _ 70 GO 50 40 so _ » 171 20 241 153 ii 10 ll ,11 !i I; 0 i 207 j . .IIIi rr~i 1j i 'i1 ' i 1 j 1 I'J'J 175 268 i r i i ji iiii i ,!ir 1 ii i 200 225 250 ii |— |- J--T i i • i 275 r ! ! i i | i i j i | i i j i i i i j i i i i i 300 325 350 37r? �I 'V •-. O(WF3S1. t CTIC=523248, El GO 20 170 2 1 i 1 r 205 10 2 :£ 1 - I 1 ! , ! ' • ,ti !]i ,.. ,1 . Li i !! ^1 1 t 1 j I i 1 i ; i 1 1 1 1 i 1 I I 1 H 1 I I 1 1 I I 1 1 1 1 1 1 1 M I I I~TTT '| r 1 1 f i i 1 M 111111 r i i ! ! IT ill ] I I M I I I I j II I ! 1 I 1 I I j M I II f Ii ^Q "00 320 �.1 CTIO4CQ52G, El 7.74 207 20 108 241 10 155 27S I THr '175 1 1 1 I T i i i r r r i r i i r 700 �iFF5M.i C 11035^0, iOO^- El l/J V'U ! _ — 3 1C3 275 — 1 i, 10 299 ! ! i ™~~" t ii i .I I ! ] i I i ! i ii ! i i i i i i i i i i 1 I i 1 ! 1 T 1 _| [ i 1 1 1 I i 1 i ^ ~ I | I I I I | 1 1 ...f L.1 I 1 1 I I I ! �ODFG10.1 ET!C=73!52, 100:i=20G73 El ICO 1 i GO 5G3 i ! 1! jj 1 ?22 299 30 2 5; j 1 20 311 2?33 2: 7 , i 1 i i F 1 { B 10 j i ij : ~i t ji M i i 1 n 'i It i j! i* !• ii l 1 225 * !i T r_ ]~r *5'. i 1 i 1 j 27 j _[ i 1 ! i j T"'] ~1 1 I 1.25 1 ! ' 1 1 1 35? 1 1 1 r .:• i i ~> I ~T~ 1 ••190' ' 1 ' • 175 i 1. i i 1 ! �f ' , ft x ")S-55 CROSS SCflN REPORT, RUN: UD1S4 ux. \ of $5J6_, «*vsfe. >..M. v _. V f. 1 'J ,,'.. £• ,// x l :: 2G6 <:= 300 0 334 14:09 100 -1 5 404 8, 3GO + TIC 17:33 ! , I 1 I I I . I I I I I I I I 39:01 31:12 24:; -I I I ! 1 I . t_ ' 1 , 1 I I ' ' ' -..» 1 I I I . I 44:50 I » < 1 I I I I I ,| 30 30 70 :o jj 40 30 20 10 0 A_A_./U.— <>: — i �co/rYA- <j<lf \'-£u I v \ ' - u Ivyf TxH.i CTIC=372336, 100?J=424n E! rift. 'V7 - - • f- O^S tool., 4 <v>i\*f» '. \] 100 CO 70 1G9 ! 101 20 134 254 ?07 10 213 2P9 -HT-:n n IT"] i i ion Ti i I i I 241 n i rr 2-10 i l i �PN255.1 CTIC=38148S, 100r;=75173 El 100 ~00 90 CO 70 GO 40 -I 230 20 207 10 1G9 1 50 2G3 ;93 j i • 175 : iiS i I I I T I I I I 350 �0 HXN.l CTIC=155G44, 100%=1C9523 E! 100 334 CO 70 GO 50 264 20 10 f 312 1 7 192 i I J 229 !! i I i j 1 I | i 200 ! i i l! i ! . I ! i 2E7 ,,, !• j I ! I h ! 1 j | i 1 1 2:"0 1 !i t 1 , I ! 1 1 275 I I 1 1 . 1I 1 ! 1I 1 i!Ui i i i i •350 �>< . ro Cl ?.26 TV' i i ~]rJT i < I^T^ i " i j i i'-r-.f "y~"r"r-T-rT •;•<-.-> L —•- �• 3 . CTIC-Toj'lj, 1002=2159:1 El T 332 fr n~ 'i~!Ti I i i I I rr i 1 1 M i i i M i r'i i i i "i T 1 1 "iTn 1 1 1 1 1 1 M i 1 1 i i i i M i 1 1 1 rn iT"n"n"rrrnTr'f!T!'i r � Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Alvin L. Young Collection on Agent Orange Description An account of the resource <p style="margin-top: -1em; line-height: 1.2em;">The Alvin L. Young Collection on Agent Orange comprises 120 linear feet and spans the late 1800s to 2005; however, the bulk of the coverage is from the 1960s to the 1980s and there are many undated items. The collection was donated to Special Collections of the National Agricultural Library in 1985 by Dr. Alvin L. Young (1942- ). Dr. Young developed the collection as he conducted extensive research on the military defoliant Agent Orange. The collection is in good condition and includes letters, memoranda, books, reports, press releases, journal and newspaper clippings, field logs and notebooks, newsletters, maps, booklets and pamphlets, photographs, memorabilia, and audiotapes of an interview with Dr. Young.</p> <p>For more about this collection, <a href="/exhibits/speccoll/exhibits/show/alvin-l--young-collection-on-a">view the Agent Orange Exhibit.</a></p> Text A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text. Box The box containing the original item. 087 Folder The folder containing the original item. 2194 Series The series number of the original item. Series IV Subseries II Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Smith, R. M. D. R. Hilker P. W. O'Keefe S. Kumar K. M. Aldous Description An account of the resource <strong>Corporate Author: </strong>Toxicology Institute, Center for Laboratories and Research, NYS Department of Health, Albany, New York Date A point or period of time associated with an event in the lifecycle of the resource 1982-03-01 Title A name given to the resource Determination of Polychlorinated Dibenzofurans in Soot Samples from a Contaminated Office Building Subject The topic of the resource BSOB PCBs analytical studies