ASTM D3867-2004 水中亚硝酸盐-硝酸盐的标准试验方法

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【英文标准名称】:StandardTestMethodsforNitrite-NitrateinWater
【原文标准名称】:水中亚硝酸盐-硝酸盐的标准试验方法
【标准号】:ASTMD3867-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:D19.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;水;含量测定;硝酸盐;亚硝酸盐
【英文主题词】:cadmiumreductionmethod;groundwater;nitrate;nitrite;salinewater;wastewater;water
【摘要】:Bothtestmethodsuseidenticalreagentsandsampleprocessing.Theonlydifferencebetweenthetwomethodsisthatonetestmethodisautomatedandtheotherismanual.Therangesandinterferencesareidentical.Theautomatedtestmethodispreferredwhenlargenumbersofsamplesaretobeanalyzed.Themanualtestmethodisusedforfewersamplesorwhenautomatedinstrumentationisnotavailable.ThesetestmethodsreplaceTestMethodsD1254(Nitrite)andD992(Nitrate).Thenitritetestmethod(TestMethodD1254)usedareagentthatisconsideredtobeapotentialcarcinogen.Thenitratetestmethod(TestMethodD992)hasbeenshowntohaverelativelylargeerrorswhenusedinwastewatersandalsohasgreatermanipulativedifficultiesthanthetestmethoddescribedherein.1.1Thesetestmethodscoverthedeterminationofnitritenitrogen,nitratenitrogen,andcombinednitrite-nitratenitrogeninwaterandwastewaterintherangefrom0.05to1.0mg/Lnitrogen.Twotestmethodsaregivenasfollows:SectionsTestMethodA-AutomatedCadmiumReduction9to16TestMethodB-ManualCadmiumReduction17to24