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1、METHOD3052MICROWAVEASSISTEDACIDDIGESTIONOFSILICEOUSANDORGANICALLYBASEDMATRICES1.0SCOPEANDAPPLICATION1.1Thismethodisapplicabletothemicrowaveassistedaciddigestionofsiliceousmatrices,andorganicmatricesandothercomplexmatrices.Ifatotaldecompositionanalysis(re
2、lativetothetargetanalytelist)isrequired,thefollowingmatricescanbedigested:ashes,biologicaltissues,oils,oilcontaminatedsoils,sediments,sludges,andsoils.Thismethodisapplicableforthefollowingelements:AluminumCadmiumIronMolybdenumSodiumAntimonyCalciumLeadNic
3、kelStrontiumArsenicChromiumMagnesiumPotassiumThalliumBoronCobaltManganeseSeleniumVanadiumBariumCopperMercurySilverZincBerylliumOtherelementsandmatricesmaybeanalyzedbythismethodifperformanceisdemonstratedfortheanalyteofinterest,inthematricesofinterest,att
4、heconcentrationlevelsofinterest(seeSec.8.0).Note:Thistechniqueisnotappropriateforregulatoryapplicationsthatrequiretheuseofleachatepreparations(i.e.,Method3050,Method3051,Method1311,Method1312,Method1310,Method1320,Method1330,Method3031,Method3040).Thisme
5、thodisappropriateforthoseapplicationsrequiringatotaldecompositionforresearchpurposes(i.e.,geologicalstudies,massbalances,analysisofStandardReferenceMaterials)orinresponsetoaregulationthatrequirestotalsampledecomposition.1.2Thismethodisprovidedasarapidmul
6、ti-element,microwaveassistedaciddigestionpriortoanalysisprotocolsothatdecisionscanbemadeaboutthesiteormaterial.Digestsandalternativeproceduresproducedbythemethodaresuitableforanalysisbyflameatomicabsorptionspectrometry(FLAA),coldvaporatomicabsorptionspec
7、trometry(CVAA),graphitefurnaceatomicabsorptionspectrometry(GFAA),inductivelycoupledplasmaatomicemissionspectrometry(ICP-AES),inductivelycoupledplasmamassspectrometry(ICP-MS)andotheranalyticalelementalanalysistechniqueswhereapplicable.Duetotherapidadvance
8、sinmicrowavetechnology,consultyourmanufacturer'srecommendedinstructionsforguidanceontheirmicrowavedigestionsystemandrefertothismanuals"Disclaimer"whenconductinganalysesusingMethod3052.1.3Thegoalofthismethodistotalsampledec
