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《一種無分散劑的新型分散液-液微萃取技術(shù)》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、摘要沉淀劑種類的選擇、沉淀劑用量的選擇和終止乳化分相的時間等重要的實驗條件進(jìn)行了優(yōu)化。關(guān)鍵詞分散液-液微萃取毛細(xì)管電泳分散劑萃取劑離心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
