【英文标准名称】:Waterquality-Determinationofchromium-Atomicabsorptionspectrometricmethods
【原文标准名称】:水质铬的测定原子吸收光谱法
【标准号】:ISO9174-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-07
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC147
【标准类型】:()
【标准水平】:()
【中文主题词】:质量;铬;原子吸收分光光度测定法;水;水质;化学分析和试验;含量测定
【英文主题词】:Analysis;Atomicabsorptionspectrometry;Atomicabsorptionspectrophotometry;Cations;Chemicalanalysisandtesting;Chemistryofwater;Chromium;Chromiumcontent;Concentration;Content;Determination;Determinationofchromium;Determinationofcontent;Quality;Testequipment;Testing;Water;Wateranalysis;Waterpractice;Waterquality;Watertesting
【摘要】:ThisInternationalStandardspecifiestwomethodsforthedeterminationofchromiuminwaterbyatomicabsorptionspectrometry.Thetwomethodsarecoveredinseparateclausesasfollows:—Clause3:Determinationofchromiumbyflameatomicabsorptionspectrometry;—Clause4:Determinationofchromiumbyelectrothermalatomizationatomicabsorptionspectrometry.Clause3isapplicabletotheanalysisofwaterandwastewaterwhentheconcentrationrangeisbetween0,5mg/land20mg/lofchromium.Whentheconcentrationisbelow0,5mg/l,thedeterminationcanbecarriedoutaftercarefullyevaporatinganacidifiedsampletosmallvolume,takingcaretoavoidtheformationofaprecipitate.NOTETheuseofevaporationwillincreasetheeffectofinterferingsubstancesandthereforeforconcentrationsbelow0,1mg/lthemethodinclause4isgiven.Clause4isapplicabletotheanalysisofwaterandwastewaterwhentheconcentrationrangeisbetween5μg/land100μg/lofchromiumbyinjectingasamplevolumeof20μlItisapplicabletothedeterminationofhigherconcentrationsbyusingasmallersamplevolume.
【中国标准分类号】:P40
【国际标准分类号】:13_060_50
【页数】:10P;A4
【正文语种】:英语