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【英文标准名称】:StandardTestMethodforDeterminationofRadioactiveIroninWater
【原文标准名称】:测定水中放射性铁的标准试验方法
【标准号】:ASTMD4922-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:anionexchange;55Fe;liquidscintillationcounting;radioactiveiron;radioactivity;Anionexchange;Cesiumisotoperemoval;Cobaltisotoperemoval;Corrosivity--water;Iodineisotoperemoval;Iron-55;Ironcontent--water;Isotoperemoval;Liq
【摘要】:Radioactiveironisproducedbyneutronactivationofstableiron.Itsconcentrationinreactorcoolantisusedtomonitorthecorrosionofreactorpartssuchasreactorfuel-claddingmaterialandreactorstructuralcomponents.Thistechniqueeffectivelyremovesotheractivationandfissionproductssuchasisotopesofiodine,zinc,manganese,cobalt,andcesiumbytheadditionofhold-backcarriersandananionexchangetechnique.Thefissionproducts(zirconium-95andniobium-95)areselectivelyelutedwithhydrochloric-hydrofluoricacidwashes.TheironisfinallyseparatedfromZn+2byprecipitationofFePO4atapHof3.0.1.1Thistestmethodcoversthedeterminationof55Feinthepresenceof59Febyliquidscintillationcounting.Thea-prioriminimumdetectableconcentrationforthistestmethodis7.4Bq/L.1.2Thistestmethodwasdevelopedprincipallyforthequantitativedeterminationof55Fe.However,afterpropercalibrationoftheliquidscintillationcounterwithreferencestandardsofeachnuclide,59Femayalsobequantified.1.3ThistestmethodwasusedsuccessfullywithTypeIIIreagentwaterconformingtoSpecificationD1193.Itistheresponsibilityoftheusertoensurethevalidityofthistestmethodforwatersofuntestedmatrices.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeSection9.
【中国标准分类号】:Z16
【国际标准分类号】:
【页数】:7P.;A4
【正文语种】:英语