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1.N.KLE(NFELDER&ASSOCIATES <br /> (ce aupPlied by eh: manufacturer) ar¢ Presented on Iable 2. After <br /> calibration with sere air and hensena, the relative re ap-nae factor for a <br /> Precalib[ated butadiene aamplo ud¢ found to be 0.58,which matches �[ <br /> a. <br /> n very <br /> <S-aely with that of iCabutylene on Table x, based c Lhe same table, the I' <br /> I� co rage reapops: factor for ge:oliee(based ee n-Octane)Waa a%CYapo la ted '7 <br /> Ve bo equal 0.2 (compared to 0.495 for 0-Haxane artd 0,147 far <br /> :Croke: with the Drager hell-- Puhp were-.4 for drawing <br /> .—P <br /> les <br /> �(( through the Oragcr tuba (DSAOg}IM , A.G. LQSECK, Federal Republic of <br /> Germany, Cac ! 6770261). Th—cubes were pre-calibrated—d gradue[-d _ 4, <br /> 1<, i against nrocteae. A blemish-green di—lar-loo of the tube directly <br /> j. I) indicated Lheppmv concentration of hydrorarhons im the dr—air ssaiple. <br /> The sensitivity of the tubes for.,her argani- -mp-vnda(as supplied by <br /> IL' Cee maaufa-tnrer)ief .. <br /> presented-n table I. <br /> �i The field date-of Pro and Drager tube—ult.for the same air Semple are <br /> [5 - <br /> Plotted an P gu ail. Tl,o-:le pe of the Curve is 1OWd to be 0.15 Which Y, <br /> Showa;.Eairly 1 o correlation lith the Tcap-mai factor of 4,20 E-mid byrt - <br /> extxapcla tion of [he data supplied by the manufacturer. However, for our <br /> ,i <br /> �] -:Isolation, e eti..".tile factor of 0.5 uae used to calculate the Al <br /> 4 �textrection affi,i n-y of the soil vapor extras Ci-D sy:ter. <br /> ,ln... flow 1111CItY at s h eaopling port was measured with a temperature <br /> .i t comp ane at ed (h t irelanemometer(Nora Ina trvmerit CA, Series 4901,_ }� <br /> This Censor measures the velocity of the gee stream by a nai,the cooling E� <br /> f effect due [e'a moving stream oyer A uniformly heated metal:phare. TM1e <br /> �'I� flpwrate of the air stream at each saepLing'potne mea ralratxted from the Y5 <br /> a <br /> �. fella-iitg aqua Cionr <br /> r <br /> aP� ..... ........................ <br /> (11 <br /> Y <br /> }� ` 4 V fume tris flow tact In CPH <br /> bf I r diameter of the pip.(ft. the pilot plane <br /> - V Linear velocity measured by anemgm¢CCr(Er(min) <br /> 29-789 - 10 <br /> 1 <br /> 1�� <br />