十四種鹵代烴和六種苯系物的頂空氣相色譜檢測方法研究.pdf

1、甘肅農(nóng)業(yè)大學(xué)碩士學(xué)位論文十四種鹵代烴和六種苯系物的頂空氣相色譜檢測方法研究姓名：陳艷彬申請學(xué)位級別：碩士專業(yè)：營養(yǎng)與食品衛(wèi)生學(xué)指導(dǎo)教師：周圍20090601甘肅農(nóng)業(yè)大學(xué)2009屆碩十學(xué)位論文曼m=；=；耳；寫ji昌一一一一奠=T一7皇皇皇曼曼量葛皇寡皇皇曼皇鼉皇AbstractHeadspacegaschromatographyisananalysismethodconformingtequirementof“greenanalytic

2、alchemistry“withfeaturesofgassampling，shortanalysistime，nosolventsextractduringanalysis，noharmtoanalystandenvironment，easyoperationandsimplechromatogram，SOitiswidelyusedinfoodsanitaryandantiepidemic，env—ironmentmonitorin

3、g，availablecompositionanalysisoftraditionalChinesemedicine，residualsolventsdetectionandotherfieldsThisthesisrsearchedandestablishedamethodtotest14kindsofVolatileHalogenatedHydrocarbonsinsoftdrinkand6kindsofbenzeneseriesi

4、nplasticpackagingmaterialbyHeadspaceGasChromatographyThepretreatmentconditionofexperimentchromatographicconditions，parametersaffectingheadspacegaschromatographyprocedure，suchastheequilibriumtime，theequilibriumtemperature

5、，needle，transmission—linetemperatureandthesamplematrixwereoptimizedInthemethodtotest14kindsofVolatileHalogenatedHydrocarbonsinsoftdrink59sodiumcarbonateandlOminultrasonictimewereusedduringthesamplepretreatment；thechromat

6、ographicconditionswereOV1701column(50mx020minx0320m)，theECDdetectortemperatureWas375“C，thesamplertemperatureWas200。C，higllnitrogen(999％)atthecolumnpressureof25psiWasusedascarrierandthesplitratiowas125：l；theoventemperatur

7、eprogrammedfromallinitial50“Cheldfor3minatarateof5C／rainto120℃heldforlminatthefinaltemperature；theheadspaceconditionswereatthe70(2foroventemperatureheldfor40min，theneedleandtransmissionlinetemperaturewere115C，replaceinpr

8、essure30s，inject4s，emptying20sandthegaspressureofnebulizerWas20x105Pa；themassspectrometerconditionswereElionizationmode，electronenergy70Ev，interfacetemperaturewas200。C，ionSOUrCetemperatureWas180。CandmassscanrangeWas30—50