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1、摘要沉淀剂种类的选择、沉淀剂用量的选择和终止乳化分相的时间等重要的实验条件进行了优化。关键词分散液-液微萃取毛细管电泳分散剂萃取剂离心IIAbstractAbstractInspiteofsubstantialtechnologicaladvancesinanalyticalfield,mostinstrumentscannotdirectlyhandlecomplexsamplematrixesyet.Asaresult,asamplepreparationstepiscommonlyinvolvedbeforeinstrumentalanalysis.
2、Themainaimofsamplepreparationistocleanupandconcentratetheanalytesofinterest,whilerenderingtheminaformthatiscompatiblewiththeanalyticalsystem.Sosamplepreparationplayonanimportantroleinanalyticalchemistry.Dispersiveliquid-liquidmicroextraction(DLLME)wasintroducedin2006.Itisarapid,si
3、mpleandeffectivesamplepreparationtechnology,ithasgainedmoreandmoreattention.Anewmethodwasdevelopedfordispersiveliquid-liquidmicroextractionmethodbasedonchloroformformedfromthereactionofchloralhydrateandsodiumhydroxide(DLLME-CFR).Thismethodcanmakeextractionsolventdispersiveinaqueou
4、ssamplewithoutadditionanydispersersolvent.ExtractionefficiencyissignificantlyhigherthanconventionalDLLME.Tosimplifytheinstrumentsusedinextraction,afurthermodificationforDLLME-CFRwasmade,andanewextractionmethodtermedcoprecipitationdispersiveliquid-liquidmicroextraction(CP-DLLME)was
5、developed.Determinationofsixaminesinenvironmentwaterbytwomethods,andachievedgoodextractioneffect.Thispaperwillbedividedintothreechapters.Itscontentisasfollow;Chapter1:Introduction.ThesolventmicroextractionandDLLMEareintroducedbriefly.ThedisadvantagesofDLLMEwereanalyzedfromitsprinc
6、iple,andsomeimprovementsmaderecentlyweresummarized.TheresearchthoughtwhichwouldbeputforwardwaspresentedChapter2:Anewextractionmethodofbasedonchloroformformedfromthereactionofchloralhydrateandsodiumhydroxide(DLLME–CFR)wasestablishedtodetermineaniline,4-toluidine,and4,4'-diaminodiph
7、enylmethaneinenvironmentalwaterandtapwater,combinedwithtransientisotachophoresiscapillaryzoneelectrophoresis.Inthispaper,theexperimentalprinciplewaswellexpounded.WealsodiscussedsomeconditionseffectonIIIAbstractextraction,suchastheexperimentalchloralhydrateandsodiumhydroxidereactio
8、ninchloroformvolume,selectionofac
