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空气中二硫化碳的测定方法.docx

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空气中二硫化碳的测定方法 Title:MethodsforDeterminingCarbonDisulfideinAir:AComprehensiveReview Abstract: Thispaperaimstoprovideacomprehensivereviewofvariousmethodsavailablefordeterminingcarbondisulfide(CS2)intheair.Carbondisulfideisanimportantgaseouspollutantemittedbyvariousindustrialprocesses,anditsmeasurementandmonitoringarecrucialforassessingairqualityandensuringworkersafety.Wewilldiscussbothtraditionalandmodernanalyticaltechniques,highlightingtheirprinciples,advantages,limitations,andapplications.Thisreviewwillserveasavaluableresourceforresearchersandprofessionalsinthefieldofairqualityanalysis. 1.Introduction: Carbondisulfide(CS2)isacolorlessvolatileliquidthatreadilyevaporatesatroomtemperature,formingapungentodor.Itisusedinseveralindustries,includingrubber,chemicalsynthesis,andpharmaceuticalmanufacturing,asasolventandasabuildingblockforotherchemicals.However,prolongedexposuretoelevatedlevelsofCS2isknowntocauseseverehealthproblems,includingneurologicalandcardiovasculardisorders.Therefore,itsaccuratemeasurementandmonitoringintheairareessential. 2.TraditionalAnalyticalMethods: 2.1GasChromatography(GC):Gaschromatographycoupledwithasuitabledetector,suchasaflameionizationdetector(FID)oramassspectrometer(MS),isoneofthemostcommonlyusedmethodsforCS2analysis.Itoffershighsensitivity,goodselectivity,andexcellentseparationcapabilities.However,samplepreconcentrationandextractionstepsareoftenrequiredbeforeanalysis,makingthemethodtime-consuming. 2.2SpectrophotometricMethods:Spectrophotometrytechniques,suchascolorimetryandUV-visiblespectrophotometry,havebeenemployedforCS2determinationduetotheirsimplicityandcost-effectiveness.Thesemethodsinvolvetheformationofcoloredcomplexeswithspecificreagents,enablingquantitativemeasurement.However,thesensitivityofspectrophotometricmethodsisgenerallylowercomparedtoothertechniques. 2.3TitrationMethods:SeveraltitrationmethodshavebeendevelopedforCS2analysis,involvingreactionswithvariousreagents,suchasiodineorsilvernitrate.Thesemethodsarerelativelysimpleandinex