基于hg-afs砷环境形态分析标准技术体系研究

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1、上海交通大学硕士学位论文ABSTRACTStudyofStandardSystemfortheSpeciationAnalysisofArsenicSpeciesinEnvironmentBaseonHG-AFSABSTRACTArsenicpollutionhasrecentlybeenaglobalenvironmentalproblemswhichseriouslythreatentohumanhealth.Thelatestresearchshowsthatinorganicarsenic(includingt

2、heAs(Ⅲ)andAs(Ⅴ))ismoretoxicthanorganicarsenicspecies,andespeciallytrivalentarsenite（As(III)）hasobviouscarcinogenictoxicity.Thereforeanalysisoftotalamountofarsenicpresentinenvironmentalsamplecouldnotprovideforcomprehensiveinformationabouttheirtoxiceffect.Inordert

3、oin-depthmonitorandcontrolarsenicpollution,itisinurgentdemandforstandardanalyticalsystemforarsenicspeciationinenvironment.Hydridegeneration-atomicfluorescencespectrometry(HG-AFS)canachieveseparationofarsenicfromthematrixinthehydrogenationstage,whichcaneliminatem

4、atrixinterferencesandimprovetheanalyticalsensitivityeffectively.InadditiontheequipmentcostofHG-AFSislowandtheoperationprocedureissimpleandreliable.Thereforeinourwork,basedontheadvanceddevelopmentintherelatedinternationalresearchgroup,wecloselycollaboratewithourp

5、artnersfor“studyonnewlyHG-AFSinterfacedanalyticaltechniquesoninorganicarsenicspeciation(As(Ⅲ)andAs(Ⅴ))inenvironment”.(1)WefirstlydevelopedaChinesestandardsystemforspeciationanalysisofAs(Ⅲ) andAs(Ⅴ)inwatersamplebyintermittentflowinjection(FI)hydridegeneration(HG)

6、 combinedwithatomicfluorescencespectrometry(AFS).Basedondifferenthydrogenation behaviorofAs(Ⅲ)andAs(Ⅴ)incitricacidicsamplebuffer,whichshowedAs(Ⅲ)can givehydrogensignals,whiclAs(Ⅴ)didnotgivehydrogensignals,thestandardsystemfor thespeciationanalysisofAs(Ⅲ)andAs(Ⅴ)

7、inseasampleisreportedinourwork.The standardsystemhasbeenverifiedbynationalmarineenvironmentalmonitoringcenter,and theresultsconfirmethatourmethodisreliableandcouldbefurtherdevelopedforreal utilization.第III页万方数据上海交通大学硕士学位论文ABSTRACT(2)Adeviceusedforon-linepre-redu

8、ctionofhydride-formingelementsduringflowinjectionhydridegenerationcombinedwithatomicfluorescencespectrometryisproducedandreportedinthispaperforrapidanalysisofinorgani