EPA METHOD 6020A Inductively Coupled Plasma - Mass Spectrometry

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1、METHOD6020AINDUCTIVELYCOUPLEDPLASMA-MASSSPECTROMETRY1.0SCOPEANDAPPLICATION1.1Inductivelycoupledplasma-massspectrometry(ICP-MS)isapplicabletothedeterminationofsub-µg/Lconcentrationsofalargenumberofelementsinwatersamplesandinwasteextractsordigests(References1and2).Whendissolvedconst

2、ituentsarerequired,samplesmustbefilteredandacid-preservedpriortoanalysis.Nodigestionisrequiredpriortoanalysisfordissolvedelementsinwatersamples.Aciddigestionpriortofiltrationandanalysisisrequiredforgroundwater,aqueoussamples,industrialwastes,soils,sludges,sediments,andothersolidwa

3、stesforwhichtotal(acid-leachable)elementsarerequired.1.2ICP-MShasbeenappliedtothedeterminationofover60elementsinvariousmatrices.AnalytesforwhichEPAhasdemonstratedtheacceptabilityofMethod6020inamulti-laboratorystudyonsolidandaqueouswastesarelistedbelow.aElementCASRNAluminum(Al)7429

4、-90-5Antimony(Sb)7440-36-0Arsenic(As)7440-38-2Barium(Ba)7440-39-3Beryllium(Be)7440-41-7Cadmium(Cd)7440-43-9Calcium(Ca)7440-70-2Chromium(Cr)7440-47-3Cobalt(Co)7440-48-4Copper(Cu)7440-50-8Iron(Fe)7439-89-6Lead(Pb)7439-92-1Magnesium(Mg)7439-95-4Manganese(Mn)7439-96-5Mercury(Hg)7439-9

5、7-6Nickel(Ni)7440-02-0Potassium(K)7440-09-7Selenium(Se)7782-49-2Silver(Ag)7440-22-4Sodium(Na)7440-23-5Thallium(Tl)7440-28-0Vanadium(V)7440-62-2Zinc(Zn)7440-66-6aChemicalAbstractServiceRegistryNumberCD-ROM6020A-1Revision1January1998Acceptabilityofthemethodforanelementwasbaseduponth

6、emulti-laboratoryperformancecomparedwiththatofeitherfurnaceatomicabsorptionspectrophotometryorinductivelycoupledplasma-atomicemissionspectrometry.Itshouldbenotedthatonemulti-laboratorystudywasconductedin1988andadvancesinICP-MSinstrumentationandsoftwarehavebeenmadesincethattimeanda

7、dditionalstudieshavebeenaddedwithvalidationandimprovementsinperformanceofthemethod.Performance,ingeneral,exceedsthemulti-laboratoryperformancedataforthelistedelements.Itisexpectedthatcurrentperformancewillexceedthemulti-laboratoryperformancedataforthelistedelements(andothers)thata

8、reprovidedinSection13.0.Instrumen