編結(jié)反應(yīng)器預(yù)富集-在線熱酸洗脫與原子光譜聯(lián)用方法研究.pdf

1、中國科學(xué)技術(shù)大學(xué)碩士學(xué)位論文編結(jié)反應(yīng)器預(yù)富集在線熱酸洗脫與原子光譜聯(lián)用方法研究姓名：訾洪靜申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：分析化學(xué)指導(dǎo)教師：淦五二20090501AbstractABSTRACTInthisthesis，aflowinjectionon—linesorptionpreconcentrationandseparationinaknottedreactor(PTFE)wascoupledtoatomicspectrometryfor

2、determiningtraceelementsTheexperimentaldevicesweresetup；experimentalconditionswereinvestigatedandanalyticalmethodsweredevelopedtodeterminetraceelementsinrealsamplesSamplepreeoncentrationandseparationwerethekeyfactorsford

3、eteminingtraceelementsOfflineproceduresoperatedinthebatchmodearetimeconsumingandlaborintensive，requirelargesamplevolumes，andsuffergreatrisksofcontaminationandanalytelossWithon—lineoperationusingflowinjection(FI)technique

4、s，thedrawbacksofbatchwiseoperationCanbeovercometoagreatextent，whilepreconcentrationandseparationCanbefurtherenhancedFIon1inepreconcentrationandseparationtechniquesforatomicspectrometrywereintroducedimportantlyChoiceofapr

5、opereluentiscriticaltothesuccessfulcouplingofFIonlineKRadsorptionpreconcentrationtoatomicspectrometryConventionalorganicreagent(eg：methanol，ethan01)eluentwasunfitfordeterminationinatomicspectrometryMoreove，Atomicfluoresc

6、enceWaspronetobequenchedbyorganicreagentElectromagneticinductionheatingtechniquewascoupledtoFIon1ineKRpreconcentrationandseparationforthefirsttimeHN03heatedbyElectromagneticinductionheatingtechniquewasusedaseluenttemovet

7、heabsorbedcomplexfromtheKRTheanalyticalmethodWasdevelopedtodeterminetraceelementsinrealsamples‘Inchaptertwo，flowinjectiononsorptionpreconcentrationandseparationinaknoRedreactor(PTFE)wascoupledtoflameatomicabsorbancespect

8、rometryfordeterminingtracecadmiuminfiverwaterHeatingnN03WasusedaseluentforthefirsttimeOilWasusedasheaterTheeffectsofseveralexperimentalparametersoftheproposedmethodwereoptimizedinthissystemThetoleranceofcoexistingionsaSZ