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【英文标准名称】:StandardTestMethodforGraphiteFurnaceAtomicAbsorptionSpectrometricDeterminationofLeadandCadmiumExtractedfromCeramicFoodware
【原文标准名称】:用石墨原子反应堆吸收光谱法测定陶瓷食品器皿中铅和镉的标准试验方法
【标准号】:ASTMC1466-2000(2007)
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:C21.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:cadmiumrelease;cermicware;foodware;graphitefurnaceatomicabsorptionspectrometry;leadrelease
【摘要】:Toxiceffectsofleadandcadmiumarewellknownandreleaseoftheseelementsfromfoodwareisregulatedbymanycountries.Regulatorydecisionsarebasedonresultsof24-hleachingwithaceticacidbecauseresultsofthistestmethodarepreciseandaccurateandthistestmethodiseasytouse.Concentrationsofleadandcadmiumextractedbyfoodmaybedifferentfromresultsofthismethod,however,becauseacidity,contacttime,andtemperaturetypicalofconsumerusearedifferentfromthoseofthistestmethod.Thistestmethodisintendedforapplicationonlyincontamination-freesettingsandshouldbeperformedbywell-qualifiedtechnicalpersonnel.Itisrecognizedthatitisnotapracticalorappropriatemethodtouseinanonlaboratoryenvironmentforqualityassuranceandcontroloftheceramicprocess.UsersareadvisedtouseTestMethodC738(flameAAS)forpurposesofthelatter.1.1Thistestmethodcoversproceduresforusinggraphitefurnaceatomicabsorptionspectroscopy(GFAAS)toquantitativelydetermineleadandcadmiumextractedbyaceticacidatroomtemperaturefromthefood-contactsurfaceoffoodware.Themethodisapplicabletofood-contactsurfacescomposedofsilicate-basedmaterials(earthenware,glazedceramicware,decoratedceramicware,decoratedglass,andleadcrystalglass)andiscapableofdeterminingleadconcentrationsgreaterthan0.005to0.020g/mLandcadmiumconcentrationsgreaterthan0.0005to0.002g/mL,dependingoninstrumentdesign.1.2ThistestmethodalsodescribesqualitycontrolprocedurestocheckforcontaminationandmatrixinterferenceduringGFAASanalysesandaspecificsequenceofanalyticalmeasurementsthatdemonstratesproperinstrumentoperationduringthetimeperiodinwhichsamplesolutionsareanalyzed.1.3Cleaningandothercontaminationcontrolproceduresaredescribedinthistestmethod.Usersmaymodifycontaminationcontrolproceduresprovidedthatthemodificationsproduceacceptableresultsandareusedforbothsampleandqualitycontrolanalyses.1.4ThevaluesstatedinSI(metric)unitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C53
【国际标准分类号】:81_060_99;81_060_20
【页数】:8P.;A4
【正文语种】: