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【英文标准名称】:StandardPracticeforNitricAcidDigestionofSolidWaste
【原文标准名称】:固体废弃物的硝酸处理
【标准号】:ASTMD5198-1992(2003)
【标准状态】:现行
【国别】:
【发布日期】:1992
【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】:D34.01.06
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:处理;废弃物;固体;硝酸
【英文主题词】:digestion;nitricacid;waste
【摘要】:Aknowledgeoftheinorganiccompositionofawasteisoftenrequiredfortheselectionofappropriatewastedisposalpractices.Solidwastemayexistinavarietyofformsandcontainarangeoforganicandinorganicconstituents.Thispracticedescribesadigestionprocedurewhichdissolvesmanyofthetoxicinorganicconstituentsandproducesasolutionsuitablefordeterminationbysuchtechniquesasatomicabsorptionspectroscopy,atomicemissionspectroscopy,andsoforth.Therelativelylargesamplesizeaidsrepresentativesamplingofheterogenouswastes.Therelativelysmalldilutionfactorallowslowerdetectionlimitsthanmostothersampledigestionmethods.Volatilemetals,suchasleadandmercury,arenotlostduringthisdigestionprocedure.Hydride-formingelements,suchasarsenicandselenium,maybepartiallylost.Sampleswithtotalmetalcontentsgreaterthan5%maygivelowresults.Theanalystisresponsiblefordeterminingwhetherthispracticeisapplicabletothesolidwastebeingtested.1.1Thispracticedescribesthedigestionofsolidwasteusingnitricacidforthesubsequentdeterminationofinorganicconstituentsbyargonplasmaemissionspectroscopyoratomicabsorptionspectroscopy.1.2Thefollowingelementsmaybesolubilizedbythispractice:aluminummanganeseberylliummercurycadmiumnickelchromiumphosphoruscoppervanadiumironzinclead