1 15 1 https://www.nal.usda.gov/exhibits/speccoll/files/original/5637dd1ac22e588bda025746e2bbba4b.pdf a287c0e2e490431717be21a0baca8bfb PDF Text Text Item D Number °2264 Author Smith R - Corporate Author Report/Article Title Typescript: Chemical Data on Air Samples Collected in and near the Binghamton State Office Building (February, March 1985) Before and After the HVAC System is Returned to Normal, July 17,1985 Journal/Book Title Year 000 ° Month/Day Color Number of biages D 19 Descriptor! Notes Thursday, September 20, 2001 Page 2264 of 2293 �CHEMICAL DATA ON AIR SAMPLES COLLECTED IN AND NEAR THE BINGHAMTON STATE OFFICE BUILDING (FEBRUARY, MARCH 1985) BEFORE AND AFTER THE HVAC SYSTEM IS RETURNED TO NORMAL R. Smith, P. O'Keefe, K. Aldous, D. Hilker, G. Eadon July 17, 1985 Wadsworth Center for Laboratories and Research New York State Department of Health Albany, New York 12201 �INTRODUCTION Air samples were collected and analyzed for chlorinated dibenzofurans (CDFs), chlorinated dibenzodioxins (CDDs) and chlorinated biphenylenes (CBPs) to study the effect of BSOB IIVAC system operating mode on BSOB indoor and outdoor concentrations. This report describes sampling, analytical procedures and results for the determination of these analytes in air samples collected (1) on 2/15/85 at 3 outdoor locations near the BSOB prior to venting of the HVAC, (2) on 2/22/85 at the same locations after venting and (3) on 3/29/85 at the mechanical room mixing boxes on floors 6 and 14 inside the building after venting. Because Prof. C. Rappe of the University of Umea, Sweden, had produced evidence suggesting detectable contamination in an earlier outdoor air sampling, the outdoor samples were collected in duplicate, extracted, and split for independent analysis by Prof. C. Rappe. •»*, Results of the last sampling prior to the return of the IIVAC system to normal (September 1984 samples) showed a mixture of Cl4~Cle CDFs in air from the 6th and 14th floor mixing boxes (similar to that previously found in building air) at concentrations of 47-260 pg/m3 total TCDFs and 29-185 pg/m3 total penta-CDFs ( ) 1. At that time C. Rappe found traces of .sAe*to;al'.:Cl4-Cl<'CDFs in a single sample (September, 1984) of outside air at concentrations of approximately 0.1 pg/m3/isoraer 12378/12348 0.14 pg/m-* uncorrected for recovery) ( ) 1. ; (e.g. To confirm these preliminary findings it was necessary to repeat the outdoor air anlyse% improving detection limits if possible. �METHODOLOGY Air Sample Collection Sample were collected using a two-stage sampling device (0.3 fi particu- late filter, silica gel adsorbent cartridge) specifically designed to collect PCDDs and PCDFs ( ) 2. In the laboratory the 140° activated 25 mm x ' *" *' 45 mm silica gel cartridges were spiked with 13 C 2,3,7,8-TCDD, 2,3,7,8-TCDF, and l »C 1,2,3,7,8 penta-CDF internal standards. 17 C1 The sampling device was then assembled and wrapped in foil for transport. At the site, samples were taken by drawing 80. M3 of air through the sampler at approximately 20 L/min using a 1.5 CFM Gast vacuum pump. the intact device was wrapped in foil and transported After sampling, at room temperature to the laboratory for analysis. Sample Extraction, Compos it ing_, and Splitting The particulate-containing filter was placed in the associated adsorbent cartridge and subjected to Soxhlet extraction with 80 ml benzene for 16 hrs (samples found to contain large amounts of water were extracted with acetone then benzene). The duplicate sample extracts to be combined (e.g. 50363 + 50364) were concentrated if necessary, combined, (as sample #50744) and split 50/50. Sample extracts to be mailed to Umea, Sweden were cotacentrated to 100 (iL, transferred to 2 mm i.d: Pyrex capillary tubes, tfcer the volume was reduced to just dryness under vacuum (exchanged standards were similarly handled). for transport. The capillary tubes were then sealed and packaged The sample extracts to be analyzed by WCL R were additionally spiked with 1! C OCDD and handled as follows: �Sample Clean-up The benzene extract was passed through a 22 nun i.d. chromatography column packed bottom to top with 4 mm Na2S04J 4 mm K Silicate, 4 mm silica gel, 30 mm 44% H2S04 silica gel, 4 mm silica gel,. 40 mm NaaC03, 50 mm silica gel and 4 mm NaaS04 followed by hexane solvent. The sample in 50% benzene/hexane was then cleaned up ***• using a microprocessor controlled sequence of acidic alumina, PX-21 carbon, and neutral alumina chromatography followed by concentration to 100 uL for storage in sealed glass capillaries. Just prior to GC/MS analysis, the samples were concentrated to 4 uL under vacuum. The extract at this stage contains all Cl4-Clg CDFs and CDDs. Capillary GC/LRMS A portion of the sample extract (0.8 to 1.8 uL) was injected onto either a 60 m 0.25 mm i.d. SP2330 or 50 m 0.2 mm i.a. DB5 fused silica GC capillary column, head pressure 20 psi, directly interfaced to a , Hewlett-Packard 5970 Mass Selective Detector. The MSD was used in the El mode with a 235 C source temperature and unit resolution. Data acquisition was accomplished using the single ion monitoring mode with m/e values and chromatographic conditions shown in Table 1. Calculations < 'Kif results were calculated by integrating a single ion chromatographic peak (e.g. 2,3,7,8-TCDF) and by summing total area counts for groups of observed peaks (e.g., TCDFs). it TCDFs and TCDDs were quantitated by an isotope" dilution internal standard method (eq. 1) which inherently corrects for any recovery losses. Detection limits were similarly calculated, substituting nearby MS noise in arbitrary counts (e.g. 1000 area counts) incorporating a detection limit factor of 2.5. �l = XC2 A1/A2 C Where C (eq = the calculated concentration of native CDF (or CDD) in pg/m3. X = a theoretical mass spectral response factor that corrects "*" 13 for differences in isotope abundances (1 for C-TCDD, 2.5 for 37 Cl-TCDF; a measured, response factor may also be used. C = the known concentration of added, isotopically labeled CDF (or CDD) in pg/m 3 . A1 = the measured area under the ion chromatographic peak due to native CDF or CDD (e.g. TCDF at m/z 306) in arbitrary counts. A = the measured area under the ion chromatographic peak to .^ isotopically labeled standard (e.g. TCDF at m/z 312) in arbitrary counts. Response factors relative to the internal standards were also obtained for congener groups by running native standards along with internal standards. .sllserc: poitse factors were applied to the quantitation of Hexa CDFs to Octa CDF and Penta CDDs to Octa CDD. Standards [D1*-C] 2,3,7,8-TCDD (KOR Isotopes, Cambridge, MA) has been used for air sampler recovery experiments. The sample cleanup procedure has been evaluated using all 22 TCDDs, OCDD (Analabs, North Haven, CT) 2,3,7,8-TCDF (NIEOS), 37 C1 penta-CDF mixture of isomers purified by RPLC (KOR), OCDF �(Analabs), and 2367-TC BP (academic source). tation included J C 12 2,3,7,8-TCDD (KOR) and J7 Internal standards for quantiC1 4 2,3,7,8-TCDF (KOR) purified by RPLC, i»C 1,2,3.7,8 penta-CDF and 13 C OCDD. Quality Assurance The following measures ensure the quality of this analysis. Various *v blanks are run concurrently with samples and strict criteria for the identification of each compound class are observed. An isotopically labeled internal standard is added to each sample prior to sampling or analysis to provide both a qualitative check and accurate quantitation when sample recovery data is variable. Blanks Four types of blanks were run: (1) a system blank prior to the use of any glassware to ensure no carryover from prior samples; (2) a method blank, run simultaneously and using the same standards, solvents, adsorbents, and glassware as the actual samples; (3) isotopically-labeled standards; and (4) benzene blanks to check for GC and syringe carryover. Precision The best measure of precision is obtained from replicate samples. is commonly within 20%. This The recovery of the internal standard available for each sample will provide a measure of precision; however, this is based on external standardization (requiring manipulation and accurate measurement of sample volumes of 1 to 4 fil) and is known to be less precise than internal standardization. �Criteria for Detection To be detected as a PCDD or PCDF isomer in a sample all of the following conditions must be met: 1. co-elution on GC with appropriate standard if available. 2. response at a minimum of two ions corresponding to H, M+2; response must be in proper ratio +20%; response at additional fragment iofis such as M-COC1 for greatest reliability when sensitivity permits. 3. adequate recovery of all internal standards. 4. acceptable QC blanks and spikes. 5. negligible mass spectral interference. �RESULTS Table 2 contains the data generated by the New York State Department of Health from outdoor air samples collected prior to (February 15-18) and after (February 22-25) returning the building's HVAC system to normal operations. Table 3 contains the data generated from indoor air samples collected on the 6th and 14th floors on March 29-April 1. or DISCUSSION The outdoor air data both before and after returning the HVAC system to normal operation contains no evidence for the presence of any 3 tetrachlorodibenzofuran isomer (detection limit 0.06-0.15 pg/m ) or any o pentachlorodibenzofuran isomer (detection limit 0.2-0.5 pg/m ). (Doctor C. Rappe's analysis of splits of these samples yielded results consistent with •j this data (not detected at about 1 pg/m /isomer). (Personal Communication, written report to follow). Since tetra and pentachlorofurans are by far the most abundant compounds among the furans, dioxins and biphenylenes within the BSOB, detection of any such BSOB-induced contamination of the outdoor air in either the pre-venting or current post-venting mode of operation is clearly beyond the capacity of present-day analytical techniques. The indoor air data of Table 3 demonstrates the presence of tetra-, penfca--, and hexachlorofurans in detectable concentrations; Hepta- and octachlorofurans, tetra- and penta-chloro-biphenylenes and tetra-, penta-, hexa-, hepta-, and octachlorodibenzodioxins were all below limits of detection. There are many cross comparisons possible among the data produced by WCL&R from the September 1984 and the March 1985 samplings. Dibenzodioxins (tetra through octachloro), hepta and octachloro furans, and pentachlorobiphenylenes were not detected in either sampling; tetrachlorobiphenylenes, barely above the limit of detection in 1984, were not detected in 1985, consistent with the �subsequently discussed decrease in overall concentrations. As Table 4 demonstrates, the patterns observed in the tetra through hexachlorofurans (the only compounds present above detection limits during both samplings) are generally maintained. Thus, for the 6th floor, the ratio total TCDF:total PeCDF:total HxCDF was 1:0.37:0.13 in 9/84 versus 1:0.60:0.14 in 4/85; the corresponding 14th floor ratios were 1:0.60:0.09 and 1:0.42:0.14. For the 6th *3f floor, the ratio 2378-TCDF/total TCDF was 0.07 in 9/84 and 0.06 in 4/85; the corresponding 14th floor ratios were 0.05 and 0.06. The largest 2378-substituted PeCDF peak (actually a mixture of 12378 and 12348-PeCDF) constituted 15% of total PeCDF on the 6th floor in 9/84, and 9% in 4/85. The corresponding values for the 14th floor are 15% and 16%. The most important difference between the two data sets is the significant decrease in concentrations of tetra through hexa CDFs in the April sampling (Table 4 . Thus, for example, total TCDF concentration (averaged over the 6th ) and 14th floors) decreased by a factor of 2.6; the corresponding factors for-total PeCDF and total HxCDF were 2.9 and 2.0. These decreases in concentration as well as improvements in detection limits for 2367-tetrachlorobyphenylene and 12367-pentachlorobiphenylene result in a recalculated "2378-TCDD equivalent" •3 concentration of <4.1 pg/nr3 in April, 1985 versus <11 pg/m (Tabl«= 5). o in November,1984 �REFERENCES 1 Aldous, K., Hilker, D., O'Keefe, P., Smith, R. and Eadon, G., Chemical data on air and wipe samples collected from the Binghamton State Office Building-September 1984, New York State Department of Health Report. 2 Eadon, G., Aldous, K., Hilker, D., O'Keefe, P. and Smith, R., Chemical data on air samples from the Binghamton State Office Building, New York State ~»** Department of Health Report. �TABLE I fj A 7 A. t~-\ r. y ij 7 s T 7 T H Nr R»y. i . i - W n y —54 1 0 3 0 / 5 t o r e M e t h o d •' ME f H : 5 I N ' 5 H : M Description B I H : 2378 iii^MLYSIG O'v 2330 6C "•'"' i'M A G Q' U I 5 I T I 0 W solvent deiaY Group I n f I np 5 stari Tine 8,00 el'l volts 1 2 fi tQ (0.00 0.00 3 5 0.00 13 Jun 85 i & r V ^ an 800 reiAtive 4 5 't 5 0.00 0.00 resulting voirage 2200 B 8 0.00 7 t low MS Resolution NO T E M P' E R ft T U R. E Level i 75.00 P R Q 6 R f\ M etjuiiibrat ion tine initial tEmp 75 6 I S i t0 f cycles per second ].4 i o n A" i 2 3 4 5 5 ri'' 2 303 = '30 305 : 50 31 t = 90 339. 6^j 341 , 85 351 * 90 Dwell 100 100 (00 t00 '0 (0 (00 rim tine HETH-'BINGH.M ,& 0.50 i n i t i a l • Rate tine ODC/Min) 1.00 50.0 . H E A T E D Z 0 N E 5 • sPiitless o-n tine final . tEnp 235 final tine 75,00 3,50 total i,ne r."i,Z0 3 ] ' »i ^j 6 actual (Standby; "5 Inj Fort B1 250 Detector ri Betpt 75 250 Off Linit 300 250 425 actual Inj Fort A Transfer Line 235 Setpt Off 235 'unit 259 300 �TABLE I (continued) D A T A A C Q U I S I T I O N R e v .1 . 3 1-Nov-S4 l o a d / s t o r e Method : METH:BINGIN.M Description : CONGENER GROUP ANALYSIS FOR BINfi INDOOR AIR SAMPLES 1 .Ml ] 4. (a® 14,88 47.88 B8 . 88 95.88 'v'a! ves Spi. i t i e s 5 O f f Group i liass Spec On Group 2 ""* firoup 3 Stop 'Run S I M A C Q U I S I T I O N s o l v e n t ; d e l a Y 14.88 ft OP - 4 . -, „ {. a loi I e'1 v o l t s CD bro u p Ions , 2 3 15 A ••? Ii'its l O W MS rveauiU t ion 1 3 Jun 85 rxrx 888 r e l a t i v e 3 15 on. 2:87 pro 4 4 - 5 4 ' • G 20 riETH:6INGIN.M r e s u l t i n g v o l t a g e 2488 7 8 3 18 7 C* *^ C\ ^ •** "* 0 rtrK IMU L;yi_i63 p6f tjeLuliu w . o 1 ion ft 3 • 4 5 G 7 8 3 !0 en / Z 2 78.80 2 72 . $v3 286.88 288.88 304.88 386.88 31 2.88 328. 8G J22.88 334.88 < rxrx 1 88 100 188 108 108 Dwell 1 lt)W 1 88 1 88 1 88 1 88 ion ft Owe 1 1 ft of C { -1 p } i ' i 1 *. 13 i t)0 1 88 Group Ions ! IS CO' n ma 1 4 ww I 1 1 88 rt n • 14 15 1 88 1 8.8 3 4 in 4 i r- 4 5 4 4 . G •"! r* iivj low MS R e s o 1 u tion NO 7 n 3 18 28 28 20 20 c y c l e s per second 1 .8 r ion S 1 2 7> 4 S B 7 3 r! .fi//: 304.88 386.88 328.88 322.88 348.88 342.88 3b2.88 ,3GB. 88 358.88 Dwell 188 180 188 180 100 !80 108 188 180 Gr'oup ft of Ions . start Time ' 1 IS 1 A .Ti ft A'? 2 3 W 15 4 4 5 4 G 20 7 28 8 28 3 20 18 28 C* "i C rt rt "i — . low MS Resolut ion NO cycles per second 3.6 ion ft 1 2 3 4 5 R 7 8 310 oi/'7 356.88''358.88 374.08 376.00 390.80 392.88 408.88 410.88 424.88 426.88 Dwell 100 180 100 100 100 100 180 180 100 100 ion ft 1 1 . 1 2 13 14 IS m / Z 4 4 4 . 8 8 4 4 6 . 0 0 468.88 462.08 472.00 Dwell 108 188 100 180 100 - . . ,.•--.--•; «;» . ~~~i?i' - .+ it.•-•««• -•'•*-<- -' ' - �TABLE I (continued) T E M P E R A T U R E rUn time Level 1 2 ' 3 .5 5 B 95.00 eQui1ibration time initial tEmp ' 190 . P R O G R A M S, H E A T E D 0.50 initial Rate *" time. . < G C / M i n > 1.00 5.0 . 5.0 ' 5.0 5.0 5.0 Z O N E S s P l l t l e s s on t i m e f i na I tEmp n ^ .'T. (. i. « "i -7 rjC.»)D 250 ". 270 300 t o t a1 t iPit?. f i na I t T Pit-IE) . 88 *1 i i ~? r\ ^ /_ k> . V ) V J ^K i*^ •? "? r* rx J ,J . V VJ r\ ni r~ t / . VtVI * r\ T r*^ / . V.I W 24.00 r\ni r> f . vj w t n , v J vj B5 . 00 nt- ' Him da . ww 7 8 Oven (Standby > Tnj P.irt B Detector A actual 1355 258 — Setpt Limit 190 300 2B0. ' 250 Off 425 actual InJ Port A Transfer Line 278 Setpt Off 275 Llf-ilt 250 300 �TABLE I (continued) D A T A Rev. A C Q U I S I T I O N 1.3 1-Nov-84 load/store Method : METH:BINGIN.M Description : CONGENER GROUP ANALYSIS FOR BINS INDOOR AIR SAMPLES 1.88 14.88 14.88 47.88 G8.88 95.03 X>B-S" Valves Splitlesa Off Group ' Mass Spec On Group 2 -~ Group 3 Stop Run SIM ACQUISITION solvent; d e l a Y 14.88 Group ft oP Ions 13 Jun 85 eM v o l t s CD "1 •raw 47 4 4 -L) 3 15 888 r e l n t i v e " 7 L, 15 f*- Ft Cn 2:87 pw .5 4 M£TH:BINGIN.M r e s u l t i n g v o l t a g e 2468 G 20 7 28 - 3 28 8 28 18 20 i~*r\ low MS -Resolut ion NO cycles per second 8 .6 ir« n n ri 2 It 1 3 4 b o / o 3 10 f'i/Z 270 . 88 272 . 28B .88 288.88 304.80 306.88 312.88 328.88 322.88 334.88 88 Dwell 188 1 08 '1 08 1 88 188 188 108 180 108 i 00 ion ion * 11 1I ^ -? 12 * ^H I • 15 I'M / Z 348.88' j 4 2 00 352 .88 35G.88 358.88 . Dwell 108 1 88 1 80 t 88 1 r» r* WW Group ft oP Ions GO R ] i 15 r*. r\ 3 15 4 4 5 4 B 28 7 28 8 28 3 28 18 20 A »-j low 1-is Resolution NO cycles per second I .0 .ion it 1 2 3 4 5 f i 7 f i S •r-t/Z 304.88 306.80 320.88 322.88 348.88 342.88 35Z-.88 3L!,, v)8 358.88 Dwell 180 100 108 100 100 180 100 1(^8 180 GiTuup ft oP Ions , i start 1 15 7. 3 "CQ 15 4 4 5 4 ,G 20 "1 1 n O rx D < rx 1 K.I 28 20 20 28 T 1 i i pie low ma R e s o l u t ion NO c y c l e s per second 8 .6 ion i t , I 2 3 4 5 G 7 8 310 ci/Z 356.88 358.88 374.08 376.OH 390.00 392.08 408.08 410.00 424.88 426.08 Dwell 100 188 100 100 180 100 188 100 100 180 ion « I! 12 13 14 IS Pi/Z 444.08 446.80 463.00 462.08 472.00 Dwell 100 180 180 IflW 100 . •;>. �TABLE I (continued) T E M P E R A T U R E rUn t i m e Level 1 2 3 .' 95.00 eQui 1 i brat, ion t i m e initial tEmp 190 . initial •** tli>m 1.00 . 4 M •Fi B P R O G R A M S, H E A T E D 0.50 Rate (OC/Min) 5.0 5.0 .. 5.0 s P l i t l e s s on time firm I , . tErop 7.20 235 2 5 0 '' r~ r\ D . W (Standby) Tnj Port B Detector ft actual i 30 Z50 — >~i "7 c\ £. f V/ 5.0 • 300 Set.pt Liroit 'l951 300 250750 Off 425 Z O N E S InJ Port A Trans far' Line final tTr-ie I B . 00 7.00 . ' ' 1 o . 5) w ' 1.88 . total time 23.00 33.00 54.00 '"J n. r\ ( . V.'W r r" ni -T O a . Vlfl 24.00 35.08 actual --278 Setpt Off 275 Llrolt ZR0 ,300 �TABLE I (continued) A T A A, r. 0 ij 7 s Method 1 0 ? d _• 7 7 : T fi N < I?v . i j 3 1 ~M n v - fi 4 NPTr-i r fi T W G I i . H L"25cr i n t ion : 2375 ANALYSIS C'iy 2339 6G COLUMN 5 I I'l A G' Q' U' I 5 I T 1 0 N solvent deiaY Group !i of Ions start Time 8,00 ef'l volts t '2 6 18 t&.M 0.00 3 5 0.00 l a Jun 85 i5)'M3 am 600 relative i'iETH'-BINGH.M resulting voltage 2 4 5 ' 6 4 5' 6 0.00 0.00 0.00 7 t 1 cycles per second 1.4 low "is Resolution txQ i o n Jt 4 i n ' Z 303 = ^0 305 •. 9 ? 3 i ? , 90 339 . 65 34 i .85 35 1 . 90 Dwell .'(00 100 100 100 100 100 T E M F* E R A T U R E run time Level 1 75 . 00 P' R 0G R A M 0.50 eOui i ibrat ion time initial ' tEmp 75 initial time ',0 (0 H EA TED & Ra t e <QC/Min> 50.0 Z O N E S split less on time final tump 235 f ina i 1 1r'ie 75,00- 0. 50 tot ai time 73 . i^0 H Oven (Standby) Inj Fort B Detector A actual 75 250 —- Setpt 7 5 250 Off Limit 300 253 425 actual Inj Fort A Transfer Lino 235 Setpt Off 235 Limit 250 300 �TRBLE 3. Indoor Rir Sariples Collected HIthin the Binghanton State Office Building Cpg/H35 F U R R N LOCflTION Vol HS Recov. Sanpla * 23P8 Te Total To . 231P8 Pe 123P8 Pe+ Racov. 13318 Pe Total P« K March 29-fipril 1 Floor &-HVHC 77. (, 581 00 25 . 38 92 0.1 3 20 10, Floor 6-Hl»fiC PP.6 582 00 32 . 59 51 0.5 2? . 12 6 ?? 583 00 38 . 61 10 1.6 1.1 2? *. Control CSpike? 0 5080-4 180 Control 0 5 8 0 ND CO. 23 05 Blank 0 5129P ND CO. 25 Floor H-HVRC 50 56 - • 198 SPIKE LEVEL ND CO. 35 65 ND CO. 35 90 330 - « ND C0.25 - * ND CO. 25 - 5 618 D I0 X IN LOCRTIOM Vol H3 Sanple * 2 P Te 38 Total Ta Recov. Z PeCDD March 29~flpril 1 Floor 6-HVflC PP.6 50801 NO CO. 35 Floor 6-HVHC P. P6 582 00 ND CO. 35 P? 50803 ND CO. 15 Floor 11-HUnC 5, 15? 82 - ND C0.15 ?2 ND CO. 15 55 ND CO. 55 8? ND CO. 25 Control CSpi ke? 0 581 00 Control 0 5 8 0 ND CO. 25 05 100 ND CO. 25 Blank 0 5 2 ? ND CO. 25 19 103 ND C . 5 02 SPIKE LEVEL ?9 198 8 �o Table 4. Comparison of Polychlorinated Dibenzofuran Concentrations (Pg/m ) in Air Samples 2378 " 4 -89 49 12378 12348 23478 Total -Cl "C15 ~C15 5.0 ND(1)C , 33 2.9 31 0.5 2.0 ND(0.6)C 12C 6.9C NA ND(0.7) NA ND(1.5) 215 64 20.0 4.4 1.4 1.6 130 27 3.5 ND(0.7) 20 9.1 NA ND(l.O) NA ND(2. 1) 150 57 13.0 3.7 1.2 1.1 83 29 16 8.0 NA ND(l.O) NA ND(2. 1) Total C1 6th Floor , Sept., 1984? April, 1985 6.0 2.8 14th Floor Sept., 1984b 10 April, 1985° 3.8 123478 cl " c Total Total cl ~ c 0 Total "C1P o— GRAND AVERAGE Sept., 1984 April, 1985 8. 0 3. 3 2.9 1.2 (a) ND indicates not detected (limit of detection); NA = not analyzed for (b) Average of two samples unless specifically indicated (c) Based on measurement in one sample �. * .>' • / Table 5. Calculation of Average "2,3,7,8-TCDD Equivalents Due to Various Dibenzofurans, Dibenzodioxins and Biphenylenes for 6th and 14th Floor Air Samples Best Estimate of Average Concentration Equivalents" X Relative Activity of Compound Class vs . Dibenzodioxins X X 1/3 X X 1/3 X Relative Activity Due to Chlorine Substitutions = "2,3,7,8TCDD 2,3,7, 8-TCDF 3.3 pg/m3 1 = 1 . 1 pg/m3 X 1 = 1 . 6 pg/m3 1/3 X 1/30 = X 1 X 1 = <0.4 pg/m3 X 1 X 1 = <0.5 pg/m3 X 1 X 1/30 = <0.07 Pg/m3 1 X 1 = <0.2 pg/m3 1 X 1 - <0.2 pg/m3 ' 12378, 12348, 23478-PeCDF 4.8 pg/m3 HEXA CDFs 8.0 pg/m3 2 0.04 pg/m3 2378-TCDD <0.4 pg/m3 12378-PeCDD <0.5 pg/m HEXA CDDs <2.1 pg/m3 2367-Tetrachlorobiphenylene <0.2 pg/m3 X 12367-Pentachlorobiphenylene <0.2 pg/m X Total (a) <4. 1 pg/m3 Since standards are not available to allow quantitation of all 2378-substituted hexa CDFs, it is conservatively assumed that 1/2 of the "total hexa CDF" is 2378-substituted. � 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. 089 Folder The folder containing the original item. 2264 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. P. O'Keefe K. Aldous D. Hilker G. Eadon Title A name given to the resource Typescript: Chemical Data on Air Samples Collected in and near the Binghamton State Office Building (February, March 1985) Before and After the HVAC System is Returned to Normal, July 17, 1985 Subject The topic of the resource BSOB ambient air sampling