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SKALAR连续流动分析仪测定水中六价铬.docx

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SKALAR连续流动分析仪测定水中六价铬 Title:AnalysisofHexavalentChromiuminWaterUsingtheSKALARContinuousFlowAnalyzer Abstract: Hexavalentchromium(Cr(VI))isahighlytoxicheavymetalthatcanbefoundinvariouswatersources,posingasignificantthreattohumanhealthandtheenvironment.AccurateandefficientmethodsforthedeterminationofCr(VI)inwaterarecrucialforenvironmentalmonitoringandregulatorycompliance.TheSKALARContinuousFlowAnalyzerisapowerfulanalyticalinstrumentcapableofautomatedandhigh-throughputanalysis,makingitanidealcandidateforCr(VI)determinationinwatersamples.Thispaperaimstodiscusstheprinciples,advantages,andlimitationsoftheSKALARContinuousFlowAnalyzerinmeasuringCr(VI)inwater,aswellasitsapplicationinenvironmentalanalysis. Introduction: Hexavalentchromium,specificallythechemicalformCr(VI),isatoxiccompoundcommonlyfoundinindustrialeffluents,miningwastewaters,andcontaminatedgroundwater.ExposuretoCr(VI)posessevereriskstohumanhealthandhasbeenlinkedtovarioushealthissues,includingcancer,respiratoryproblems,andreproductivedisorders.AccurateandreliablemethodsforCr(VI)determinationinwaterarethusessentialformonitoringandmaintainingsafedrinkingwaterstandards. DeterminingCr(VI)concentrationsinwatertraditionallyinvolvescolorimetricmethods,includingthediphenylcarbazide(DPC)anddiphenylamine(DPA)methods.However,thesetechniquesoftenrequiretime-consumingsamplepreparationstepsandcanbepronetointerferencesandsubjectiveinterpretations.TheSKALARContinuousFlowAnalyzeroffersamoreefficientandaccuratealternativeforCr(VI)analysis,minimizinghumanerrorandprovidingpreciseandreproducibleresults. PrinciplesoftheSKALARContinuousFlowAnalyzer: TheSKALARContinuousFlowAnalyzeroperatesbasedoncontinuousflowinjectionanalysis(CFA)principles.CFAutilizesacontinuousflowofreagents,sampleaspiration,andmixingforoptimumprecisionandsensitivity.TheanalyzercombinestheprinciplesofcolorimetrywithspectrophotometrytomeasureCr(VI)concentrationsinwater. AdvantagesoftheSKALARContinuousFlowAnalyzer: 1.Automation:TheSKALARanalyzerallowsforautomatedsample