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【英文标准名称】:StandardTestMethodforTotalandOrganicCarboninWaterbyHighTemperatureOxidationandbyCoulometricDetection
【原文标准名称】:用高温氧化法及库仑检测法对水中总碳量和有机碳含量的标准试验方法
【标准号】:ASTMD4129-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.06
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:碳;水;含量测定;试验;有机的;氧化
【英文主题词】:carbon;carbondioxide;hightempereatureoxidation;inorganiccarbon;organiccarbon;totalcarbon
【摘要】:Thistestmethodisnecessarybecauseoftheneedforrapidreliabletestsforcarbonaceousmaterialinwatersandsediments.Itisusedfordeterminingtheconcentrationoforganiccarboninwaterthatcomesfromavarietyofnatural,domestic,andindustrialsources.Typically,thesemeasurementsareusedtomonitororganicpollutantsindomesticandindustrialwastewater.Whenasampleishomogenizedsothatparticulate,immisciblephases,anddissolvedcarbonfrombothorganicandinorganicsourcesisdetermined,themeasurementiscalledtotalcarbon(TC).WheninorganiccarbonresponseiseliminatedbyremovingthedissolvedCO2priortotheanalysisorthedissolvedCO2concentrationsubtractedfromthetotalcarbonconcentration,themeasurementiscalledtotalorganiccarbon(TOC).Whenparticulatesandimmisciblephasesareremovedpriortoanalysisthemeasurementiscalleddissolvedcarbon(DC),ordissolvedorganiccarbon(DOC)ifinorganiccarbonresponsehasbeeneliminated.Homogenizingorspargingofasample,orboth,maycauselossofvolatileorganics,thusyieldinganegativeerror.Theextentandsignificanceofsuchlossesmustbeevaluatedonanindividualbasis.Ifsignificantquantitiesofvolatilecarbonaceousmaterialsarepresentormaybepresentinsamplesorganiccarbonshouldbedeterminedbythedifferencebetweenthetotalcarbonandtheinorganiccarbonconcentrations.Whenorganiccarbondeterminedbothbydifferenceandbyspargingagreeitisacceptabletodetermineorganiccarbonbyspargingforsimilarsamples.TherelationshipofTOCtootherwaterqualityparameterssuchasCODandBODisdescribedintheliterature.51.1Thistestmethodcoversthedeterminationoftotalandorganiccarboninwaterandwastewater,includingbrackishwatersandbrinesintherangefrom2to20000mg/L.Thistestmethodhastheadvantagesofawiderangeofconcentrationwhichmaybedeterminedwithoutsampledilutionandtheprovisionforboatorcapillaryintroductionofsamplescontainingsedimentsandparticulatematterwheresyringeinjectionisinappropriate.1.2Thisprocedureisapplicableonlytothatcarbonaceousmatterinthesamplethatcanbeintroducedintothereactionzone.Whensyringeinjectionisusedtointroducesamplesintothecombustionzone,thesyringeneedleopeningsizelimitsthemaximumsizeofparticlesthatcanbepresentinsamples.Sludgeandsedimentsamplesmustbehomogenizedpriortosamplingwithamicropipetororotherappropriatesamplerandladleintroductionintothecombustionzoneisrequired.1.3Theprecisionandbiasinformationreportedinthistestmethodwasobtainedincollaborativetestingthatincludedwatersofthefollowingtypes:distilled,deionized,potable,natural,brine,municipalandindustrialwaste,andwaterderivedfromoilshaleretorting.Sincetheprecisionandbiasinformationreportedmaynotapplytowatersofallmatrices,itistheuser''sresponsibilitytoensurethevalidityofthistestmethodonsamplesofothermatrices.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificprecautionarystatements,seeand.
【中国标准分类号】:Z16
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】: