Document p2EBwdGOLNL5x8rnnLkoL91Dj

4 IWTERNAL'CORRESPONDENCE L-34'o " FROM to ; SUBJECT James 0. Jackson Mr. H. E. Run ion PLASTIGAMA, ECUADOR AIR SAMPLING: JUNE 21-23, 1975 AT Harmarvi11e AT Pittsburgh date August 19, 1975 reference HSL-005~67 F75-067 Attached is a data summary of analytical results from the nineteen air samples collected at Plastigama. Table I presents organic vapor levels while Table II shows the aerosol concentrations. Vinyl chloride monomer was not found on any of the fifteen submitted charcoal tubes. Organic vapor concentrations in Table I include benzene, butyl acetate, isopropanol, tetrahydrofuran, toluene, xylene and an estimate of total hydrocarbon content. In thirteen of the fifteen charcoal tube samples collected at plastigama, breakthrough was observed. Here, breakthrough is defined as that condition when approximately onethird or more of a compound found on the front section of the charcoal tube is on the back-up la7er. Since vinyl chloride monomer and butane were not determined in any sample, and because trace levels of pentane were observed in only two (No. 2 and 16), it is concluded that the light ends passed through the sampling tube while the heavier compounds were retained. Of course, the light ends were adsorbed during the early stages of collection, however, larger molecules preferentially occupied the ad sorption sites when the light ends were swept off. In field sample numbers 8, 11, 12 and 17. the back-up section concentration equaled or exceeded the front layer level, thus raising considerable doubt as to the true concentration at the time of sampling. It is suggested that these data represent the minimum levels during sample acquisition. *<<- There is also the possibility that-high relative humidity could produce phenomena similar1to the situation described here, although it has ,.v>^not been proven yet. I believe it would yield the same effect, i.e., few, if any?*>light ends. When,,the Industr ial^Hygiene Laboratory has tv sufficient time, we need to investigate the potential effectMjf*mois ture on hydrocarbon adsorption sampling. Since butanes were absent in all samples, and because of the reasons stated above, it follows that vinyl chloride should also be absent, as it elutes from the gas chromatograph before butane. CUSAROSS 00168 date 8-19-75 from James 0. Jackson 1 ' to Hr. H. E.Runion " ' 1 - sheet no. 2 '-.-riSt A listing of fifty compounds that were utilized as a data base for vapor quantitation is shown in Table ||, Here, a variety of organic vapors are discernable which include various solvents as well. Gravimetric measurements of airborne aerosols are presented in Table II where levels of 1.8 to 6.7 mg m"^ are noted. Also attached is a gas chromatogram of the weathered gaso line with added stabilizer. It can be noted that while a substantial number of compounds are identified, many are not. Attachments JOJ :j` ks OW& (hot* James 0. Jackson, Ph.D. A SUBSIDIARY of gulf oil corporation MHtr, * CUSAROSS 00169 4k |" | TAE^I DATA SUMMARY: ORGANIC VAPORS AT PLASTIGAMA, JUNE 21-23, 1975 HSL Sample Number Field Sample Number Sample Collection Date T.(. Sample Volume Liters Isopropyl Alcohol ppm Tetra Hydro Furan ppm Benzene ppm HSL-005-67A HSL-005-67B 1 6-21-71 ' 102 75 * I1 2 6-21-75 ' 72.0 140 <.5 <.5 Tr .5 HSL-005-67C 3 6-21-75 141 <.5 <.5 <.5 HSL-0U5-67D 4 6-21-75i 143 <.5 11 HSL-005-67E HSL-005-67F |Jl-005-67G 1 * 'i i* HSL-005-67H i HSL-005-67K 1 HSL-005-67L 5 6 7 8 11 12 6-21-7| jff * 6-21-75 6-22-75 6-22-75 - <i 6-22-75 6-22-75 160 i 241 j 148 f 230 392 . 452 <.5 40 <.5 <.5 <.5 <.5 1 <.5 3 <.5 <.5 1 - <.5 - <.5 HSL-005-67M I HSL-005-67N ji * * H\SL-00ft5-67'T 0 HSL-005-67P 13 6-22-75 64.0 14 6-23-75 316 15 6-23-75 | * 347 i' 16 6-23-75 . 257 <.5 <.5 <.5 <.5 4 21 <.5 <.5 <.5 1 HSL-G05-67Q . ,7 6-23-75 . 203 - <.5 - ^fr = Trace v 2Mos`tly weathered medium to heavyfaliphatlcs, 3leathered aliphatics and aromatics h ' : i.e., ,. light ends missing CUSAROSS 00170 Butyl Acetate ppm <.5 <.5 <5 2 4 1 4 Tr 2 3 <.5 6 A Toluene ppm <.5 <.5 2 n 10 2 1 6 50 7 <.5 11 Xylene ' ppm Total Hydrocarbon Estimate ppm Tr1 . 75 Tr 140 Tr. . . - 1 i 1 l\ , 6 ti . t 4 * '" I: - !; 7 :f 22 r 3 20 j 1 rI 652 & % 1502 1 27 t l iI i *r 1 - 1; 125 8103 1153 . | 17 5r - 1 'if <.5 12 i 1 23 TABLE II DATA SUMMARY: AEROSOL CONCONTRATIONS AT PLASTIGAMA, JUNE 22-23, 1975 HSL Samp 1e Number HSE-005-67I HSL-005-67J HSL-005-67R HSL-005-67S Field Sample Number 9 10 18 19 Filter Number 75040411 75040410 75040408 75040409 Sample Collection Data 6-22-75 6-22-75 6-23-75 6-23-75 Sample Volume Liters 672 594 513 99 Particulate Loading mg nr 3 3.30 2.34 1.79 6.67 CUSAROSS 00171 i?R T , I,s Tij v RYU i ChL *# REF: 1 3 4 5 6 7 8 9 10 11 IS 13 - 14 15 16 17 1IS'' 2S 21 22 "`3 24 25 26 i-^v_ --i? 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 - 43 44 .45 .'**46 47 48 49 50 R7 24.77 1.32 1962.67 2.79 3.00 4.00 4.23 4.37 4,45 4"_7 .a 5i--~i*0r~` 6.21 6 . Do b. 3 i b, 50 6,6 I 7 . r* '? o* * --= r1 6.3 0 9.73 3. 3 10.59 11.04 1 1.06 11.35 12.10 1 2 . I''*-?12.89 1 -1 . 7 1 1 13.4? 13.70 15.47 15.70 1 6.23 17.43 17.63 19.22 19.39 20.87 21.03 22.41 22.56 25?38 27.50 2 8.6 9 30.8 1 36.63 --3.56 KFm- 7MT HR- H 1,7449 1.1800 E-- 1 - 1800 " 1.1600 -E~ 1.160B 1.1800 E1.1300 E1.1800 E6.2300 E -- 1,1900 8,0080 E1 . i 8 0 0 E-- i 112 0 E1 . 13 0 0 E-- 1.1803 E1.2000 E1,2000 E1.2000 E1.1789 1,2000 E- 1.2003 E -- 1.2000 E1.2000 -- 1.2003 E1,2003 E1.2000 E1.20S0 E1.3503 E1.3000 E1.3500 E- 1.3000 E1.3500 E1.4800 E1.4U0B E1.4000 E1.4000 fa -- 1.4000 E1.4030 E -- 1.4000 E1.4000 fa1,4000 E1.4000 E- 1.4000 E1.4000 E1.4000 E1.4000 E1 . .`!0n E1.4000 E1.4000 E -- 1.4000 E- b 6 6 6 6 6 o 6 6 6 fa 66 6 6 6 -o 6 6= 6 6 6 fa6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 8 1.0000 E + 0 HYDROCARBONS Bibenzyl Methane Ethane Iso-Butane Vinyl Chloride n-Butane Iso-Pentane 1-Pentene Iso-Propyl Alcohol n-Pentane Acetone 2-Methyl Pentane Hexane n-Hexane 1-Hexene Methyl Ethyl Ketone Tetra Hydrofuran Benzene 1-Heptene 2,2,4-Trimethyl pentane Butyl Acetate Dimethyl hexane Toluene 2,2,5-Tri methyl hexane 1-Octene n-Octane p-Xylene Ethyl Benzene m-Xylene 1-Nonene o-Xylene Nonane 1-Decene n-Decane p-Cymene 1-Undecene Undecane 1-Dodecene n-Dodecane 1-Tridecene n-Tridecane 1 -Tetradecene n-Tetradecane n-Hexadecane Cyclohexanone n-Octadecane n-Nonadecane n-Heneicosane n-Docosane ISIS HilT: 8.1490 E 1 CUSAROSS 00172