气相中挥发性有机酸的测定

76198812ENVIRONMENTALCHEMISTRYVol7,NoGDeeember1988()XD2,,.,C:C.98%,XAD297%.,p.,,,,,.,,,.,,t4.,,,Ag:o,C,C,,,xAD2,97%.1SP(),3390(H&P),Gs3();4021GCMs(Finnigan);pDIB()2.C:C();(,),;(,),,AmberlitexAD2(),,()33.1XAD2xAD2INoH,sh,3.2AgAN()KoH(),,,pi,,,.3.35005,/ml,1050,_Ag:0.,,1.:SE54,0.25mm,28m.1:5;N:,,sol/min;10016(4/in),2,FID2204XAD2(13mmoe,.(,),,,,1._-1-500g/ml,5oml,lomlo.20gAg:o.,,(6.4),5,10,15,20(l5);15,3,60min(13)(1)l21,1Ta1ft,ftimandboyl.1,bmidemnhestrifjcationdegree,;\-}KIQ)1X10)368741766JJ†ƒJOuUl-C19Žq,,_,3:15,.,2,m,.15,30._1.2AgC:C(5eml),16:ƒNx„ƒ”x„t15304560(min)1F19.1Effeetofben1brodeamountontheesterifleationdegree2F9.2Effeetoftimeonthoesteri~fieationdegree…„,Ag:01,5-200,15,2mg,961(xs),30min,1,33,Ag:OAg:O150mg,,,150mgAg20.,C,C500g/ml,:15,AgZO150mg,3omin.100g/ml2._,,4.500150Ag20(mg)3AgZOF19.3Effeetofsilveroxideamountontheesiertfieationdegree500g/mlC:C4,4,.1,2,,12#,Johnson.4,C;C,C,,c..,,,C.,,Zng(2)3.1.114CIC(z),(2)(3),(4)*(5),(7),()(.),(1),(10,(12).F19.4GaschromatogramofbenzylbromidederivativesofstandardCiCoOrnieid210Ppm101ppm,5.5.--!ll,J1.|(5Fi5Calitatnrveofbeylfa4,,.10mlc:C;2),4.5%.6:2(:Table2Reprodueibilityofat1rests\,~l11},I.}{32,{47l,24},08120,g{::52{2::}2:2{21{2:2,.795)*.4,~-{99,).xAD2()(1m/gm),xAD2,,,,.3,xAD2.,,XAD2,,3TaIe3EffeetOfexperentaleonditionsontheadsorptionofCIC3organieaedsJ111,,Jf,,}}}.,J,J.}}}}}IIIUUUIUUUU111110005553131210741009xAD.19xAD2,,6.6,,xAD2,34h,,.,0.12mg/lZmg70%,,6.,,90%,15ml,0.5.5(1Cmg/m3).,,15ml,.54.,_A_r~VXV,(mg/m),c(g/m);A;,Vml),v,~(ml)6XAD2FgFfeeofithsnoffoicacXAD24C;C,(mgTale4AnalytiealrsultsforClC,organieaeidsinairsamples{}0.05c03,0.005,0004.0.oa60.0070.2340.0170.120015..00l.0,2q,092330.0530.010!54056.0800.020.O0.0040.2390.0220.1.00.360.011.0.2:CC4.{;97%.C:C,;b.:,q,,.:6:zFraneisAminesctionJ-AJ,MoanED,PoOleCF,2975.FlopemesylDerivativesofAeohols,phenols,andCarboxylieAeidsadTheir_UseinGa:Cromataphy,ithEleetronCaptuDete-2n.Phy,-Johso,CB,19.EieatidAnaly,srtaioFattrtd,ReadxGasChromatograph.A,Beem.,21:596:MichaelJB,Ho,ar.es_:1:6.DteiofLMoleeular,elghtvolatileFattyAeids4KimitakaK,inue;.p,Aaeh2:::,:IsaaeRK,los4.CillaGasChromatographDeterminationofVolatileorganieAcidsinRainandFogSamples.Aa.ee.,56:5WilliamCK,GallowagJN,105.0,nieAeidit1616620inPltationofNorthAmeriea.A05.EVro18:24912497195720g11DETERMINATIONOFVOLATILEORGANICACIDSINQASEOUSPHASEXiaLi(ResearehCenterforCe9ZonglangXuXaobaiEeoEnvironntalSeiences,AeademiaSiniea)ABSTRACTAga,ehromatoraphieproeedureisdeseribedfordeterminingvolatileorganieaeidsingasebusphase.Theprceedure;eonsislf:Colleetioncforgani\aeidsbyadsorptionwithAmberlitexAD22esin,esterifieationoftheaeidswithbenzylbromide(ilveroxideaseatalst),anddeterminationofhederivedproduetsbyGC.Conditionshavebeenestablishedforesteri-ieationoftheaoids.ExperimentalresultsindieatedthatC,Corganieaeidseanbeeffeetivelysepatedandqnantivielydetermsned.Theesterxfi-eationyieldofformieaeid15greaterthan98%andtheadsorPtion,eove-ryofXAD2resinforformieaeidreaehesashighas97%.Themethod15simPleandraPid,andhasbeenaPPliedtotheanalysisoforganieaeidsintheatmosPhere.