EPA METHOD 3015A MICROWAVE ASSISTED ACID DIGESTION

EPA METHOD 3015A MICROWAVE ASSISTED ACID DIGESTION

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时间:2019-10-18

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1、METHOD3015AMICROWAVEASSISTEDACIDDIGESTIONOFAQUEOUSSAMPLESANDEXTRACTS1.0SCOPEANDAPPLICATION1.1Thismicrowavemethodisdesignedtoperformextractionusingmicrowaveheatingwithnitricacid(HNO3),oralternatively,nitricacidandhydrochloricacid(HCl).Sincethismethodisnotintendedtoaccomplishtotaldecom

2、positionofthesample,theextractedanalyteconcentrationsmaynotreflectthetotalcontentinthesample.Thismethodisapplicabletothemicrowave-assistedacidextraction/dissolutionofavailablemetalsinaqueoussamples,drinkingwater,mobility-procedureextracts,andwastesthatcontainsuspendedsolidsforthefoll

3、owingelements:aElementCASRNAluminum(Al)7429-90-5*Antimony(Sb)7440-36-0*Arsenic(As)7440-38-2Barium(Ba)7440-39-3*Beryllium(Be)7440-41-7*Boron(B)7440-42-8Cadmium(Cd)7440-43-9Calcium(Ca)7440-70-2Chromium(Cr)7440-47-3*Cobalt(Co)7440-48-4Copper(Cu)7440-50-8Iron(Fe)7439-89-6*Lead(Pb)7439-92

4、-1Magnesium(Mg)7439-95-4*Manganese(Mn)7439-96-5Mercury(Hg)7439-97-6Molybdenum(Mo)7439-98-7Nickel(Ni)7440-02-0Potassium(K)7440-09-7Selenium(Se)7782-49-2Silver(Ag)7440-22-4*Sodium(Na)7440-23-5Strontium(Sr)7440-24-6Thallium(Tl)7440-28-0Vanadium(V)7440-62-2*Zinc(Zn)7440-66-6aChemicalAbst

5、ractServiceRegistryNumber*ElementswhichtypicallyrequiretheadditionofHClforoptimumrecoveries.Otherelementsandmatricesmaybeanalyzedbythismethodifperformanceisdemonstratedfortheanalyteofinterest,inthematricesofinterest,attheconcentrationlevelsofinterest(seeSec.9.0).CD-ROM3015A-1Revision

6、1January19981.2Thismethodprovidesoptionsforimprovingtheperformanceforcertainanalytes,suchasantimony,iron,aluminum,andsilverbytheadditionofhydrochloricacid,whennecessary.Itisintendedtoprovidearapidmulti-elementacidextractionpriortoanalysissothatdecisionscanbemadeaboutmaterialsandsitec

7、lean-uplevels,andasanestimateofmetaltoxicity.Digestsproducedbythemethodaresuitableforanalysisbyinductivelycoupledplasmamassspectrometry(ICP-MS),inductivelycoupledplasmaatomicemissionspectrometry(ICP-AES),flameatomicabsorptionspectrophotometry(FLAA),andgraphitefurnaceatomicabsorptions

8、pectrophotom

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