【英文标准名称】:StandardTestMethodforTritiuminDrinkingWater
【原文标准名称】:饮用水中氚含量的试验方法
【标准号】:ASTMD4107-2008
【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】:drinkingwater;3H;liquidscintillation;radioactivity;radioisotope;tritium
【摘要】:Thistestmethodwasdevelopedformeasuringtritiuminwatertodetermineiftheconcentrationexceedstheregulatorystatutesofdrinkingwater.Thistestmethodalsoisapplicableforthedeterminationoftritiumconcentrationinwaterasrequiredbytechnicalspecificationsgoverningtheoperationsofnuclearpowerfacilities.Withsuitablecountingtechnique,samplesize,andcountingtimeadetectionlimitoflessthan37Bq/L(1000pCi/L)isattainablebyliquidscintillation.1.1Thistestmethodcoversthedeterminationoftritiumindrinkingwaterbyliquidscintillationcountingofthetritiumbetaparticleactivity.1.2Thistestmethodisusedsuccessfullywithdrinkingwater.Itistheuser''sresponsibilitytoensurethevalidityofthistestmethodforuntestedwatermatrices.1.3Thetritiumconcentrations,whichcanbemeasuredbythistestmethodutilizingcurrentlyavailableliquidscintillationinstruments,rangefromlessthan0.037Bq/mL(1pCi/mL)to555Bq/mL(15000pCi/mL)fora10-mLsamplealiquot.Highertritiumconcentrationscanbemeasuredbydilutingorusingsmallersamplealiquots,orboth.1.4ThemaximumcontaminantlevelfortritiumindrinkingwaterasgivenbytheUnitedStatesEnvironmentalProtectionAgency(U.S.EPA)NationalInterimPrimaryDrinkingWaterRegulations(NIPDWR)is0.740Bq/mL(20pCi/mL).TheNIPDWRlistsarequireddetectionlimitfortritiumindrinkingwaterof0.037Bq/mL(1pCi/mL),meaningthatdrinkingwatersupplies,whererequired,shouldbemonitoredfortritiumatasensitivityof0.037Bq/mL(1pCi/mL).InAppendixX1,EqX1.3isgivenfordeterminingthenecessarycountingtimetomeettherequiredsensitivityfordrinkingwatermonitoring.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C51
【国际标准分类号】:13_060_50
【页数】:6P.;A4
【正文语种】:英语