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【英文标准名称】:StandardPracticesforDigestionofWaterSamplesforDeterminationofMetalsbyFlameAtomicAbsorption,GraphiteFurnaceAtomicAbsorption,PlasmaEmissionSpectroscopy,orPlasmaMassSpectrometry
【原文标准名称】:用火焰原子吸收法,石墨炉原子吸收法,等离子体发射光谱法或等离子体质谱法测定金属含量用水试样浸煮的标准实施规范
【标准号】:ASTMD1971-2011
【标准状态】:现行
【国别】:
【发布日期】:2011
【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】:D19.05
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:发酵作用;石墨炉原子吸收法;电感耦合等离子体(ICP);金属;废水;水;矿物酸溶解;等离子发射分光学
【英文主题词】:digestion;graphitefurnaceatomicabsorptionspectroscopy;inductivelycoupledplasma(ICP);metals;wastewater;water;Mineralaciddissolution;Plasmaemissionspectroscopy
【摘要】:Thedeterminationofmetalsinwateroftenrequiresthemeasurementoftotal(suspendedanddissolved)metalsaswellassoluble(dissolved)metals.Insuchcases,consistentanddependabledigestionproceduresmustbeusedsothatdataderivedforthetotalmetalscontentisreliable.Thepracticesgivenareapplicabletoawidevarietyofsampletypesforthepurposeofpreparingasampleformetalsanalysesbyatomicabsorptionspectrophotometryorplasmaemissionspectroscopy(seeTestMethodsD1976,D3919,D4691,andD4190)orplasma-massspectrometry(SeeTestMethodD5673)andhavebeenshowntogivegoodrecoveryinthefollowingmatrices:industrialeffluents;wastewatertreatmentplantinfluents,sludges,dewateredsludges,andeffluents;riverandlakewaters;andplantandanimaltissues.Elementswhichhaveshowngoodrecoveryinclude:copper,nickel,lead,zinc,cadmium,iron,manganese,magnesium,andcalcium.Goodrecoveryfortheindicatedsampletypesandmetalsmaynotbeachievedatalltimesduetoeachsample''suniquecharacteristics.Usersmustalwaysvalidatethepracticefortheirparticularsamples.Theanalyticalresultsachievedafterapplyingthesepracticescannotnecessarilybedeemedasameasureofbioavailableorenvironmentallyavailableelements.Thesethreepracticesmaynotgivethesamerecoverywhenappliedtothesamesample,norwilltheynecessarilygivethesameresultsasachievedusingotherdigestiontechniques.AnalternatedigestiontechniqueisPracticeD4309.1.1Mostatomicabsorptionandplasmaemissionspectroscopy,andplasma-massspectrometrictestmethodsrequirethatthemetalsofinterestbedissolvedinaliquidphasebeforebeingintroducedintothespectrophotometer.Thesepracticesdescribedigestionordissolutionprocedureswherebyanalytemetalsassociatedwiththesolidfractionofasamplecanbebroughtintosolutionforsubsequentanalysis.Thefollowingpracticesareincluded:
Sections
PracticeADigestionwithMineralAcidsandElevatedPressure
8through13
PracticeBDigestionwithMineralAcidsandHeatingatAtmosphericPressure
14through19
PracticeCIn-bottledigestionwithMineralAcids
20through25