ASTM D4785-2008 水中碘放射性同位素低水平分析的标准试验方法

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【英文标准名称】:StandardTestMethodforLow-LevelAnalysisofIodineRadioisotopesinWater
【原文标准名称】:水中碘放射性同位素低水平分析的标准试验方法
【标准号】:ASTMD4785-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D19.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:iodine;ionexchange;low-levelactivity;radioiodine;radioactivity;solventextractionwater
【摘要】:Thistestmethodwasdevelopedformeasuringlowlevelsofiodine-131inwater.Theresultsofthetestmaybeusedtodetermineiftheconcentrationofiodine-131inthesampleexceedstheregulatorystatutesfordrinkingwater.Withasuitablecountingtechnique,samplesize,andcountingtime,adetectionlimitoflessthan0.037Bq/L(1pCi/L)isattainablebygamma-rayspectroscopy.1.1Thistestmethodcoversthequantificationoflowlevelsofradioactiveiodineinwaterbymeansofchemicalseparationandcountingwithahigh-resolutiongammaraydetector.Iodineischemicallyseparatedfroma4-Lwatersampleusingionexchangeandsolventextractionandisthenprecipitatedascuprousiodideforcounting.1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareprovidedforinformationpurposesonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeNote2,Note3,Note9,andSection9.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:9P.;A4
【正文语种】:英语