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EDTA滴定法在氰化液体钙含量测定中的应用.docx

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EDTA滴定法在氰化液体钙含量测定中的应用 Title:ApplicationofEDTATitrationMethodintheDeterminationofCalciumContentinCyanideLiquid Abstract: Thedeterminationofcalciumcontentincyanideliquidisofcrucialimportanceinvariousindustries,suchasminingandmetallurgy.Calciumplaysasignificantroleinmanyprocesses,includingcyanideleaching,wherecalciumcyanidecomplexesareformed.ThispaperfocusesontheapplicationoftheEDTA(ethylenediaminetetraaceticacid)titrationmethodinthedeterminationofcalciumcontentincyanideliquid.ThepurposeofthisstudyistoexplorethepotentialofEDTAtitrationasanaccurateandreliablemethodforcalciumquantificationincyanidesolutions. Introduction: Cyanideliquorsarecommonlyusedingoldandsilvermining,electroplating,andotherindustrialapplications.Thepresenceofcalciuminthesesolutionsiscrucialforproperoperationandefficiency.Calciumincyanideliquidformscomplexeswithcyanideions,whichenhancetheleachingprocess.Thus,accuratedeterminationofcalciumcontentisessentialforprocesscontrolandoptimization. EDTA(ethylenediaminetetraaceticacid)isaversatilechelatingagentwidelyusedincomplexometrictitrations.Itsabilitytoformstablecomplexeswithmetalionsmakesitanidealcandidateforcalciumiondetermination.EDTAformsa1:1complexwithcalciumions,whichcanbeaccuratelyquantifiedthroughtitration. ExperimentalMethodology: 1.Samplepreparation: -Cyanideliquidsampleswerecollectedfromtheindustrialsite. -Thesampleswerecarefullystoredinclean,acid-washedcontainerstopreventanycontamination. 2.StandardizationofEDTAsolution: -Astandardcalciumsolutionofknownconcentrationwaspreparedusingacertifiedcalciumcarbonatesolution. -Adefinedvolume(e.g.,25mL)ofthestandardcalciumsolutionwastitratedwithEDTAsolutionundercontrolledconditionsusingapHbuffer. 3.Cyanideliquidcalciumdetermination: -Thecyanideliquidsampleswerefilteredtoremoveanyparticulatematter. -ThesampleswerethentreatedwithammoniumhydroxidetoadjustthepHandconvertedtocalciumcarbonateprecipitatesbyaddingammoniumcarbonate. -Thecalciumcarbonateprecipitatesweredistilledandcollected. -Thecollectedprecipita