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【英文标准名称】:StandardTestMethodforDeterminationofHydrogenPeroxideandCombinedOrganicPeroxidesinAtmosphericWaterSamplesbyPeroxidaseEnzymeFluorescenceMethod
【原文标准名称】:用过氧化物酶荧光法测定大气水样中过氧化氢和合成有机过氧化物的标准试验方法
【标准号】:ASTMD6363-1998(2009)e1
【标准状态】:现行
【国别】:美国
【发布日期】:1998
【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】:D22.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:atmosphericwater;derivatization;hydrogenperoxide;hydroperoxide;peroxide;sampling;Atmosphericwateranalysis;Fluorescence--atmosphericanalysis;Horseradishperoxidasederivatization;Hydrogenperoxide(H2O2);Organicperoxi
【摘要】:Hydrogenperoxide(formedphotochemicallyintheatmosphere)isaprimaryoxidizerofdissolvedsulfurdioxideinatmosphericwater.DetectionofH2O2inatmosphericwaterisusefulforinferringgas-phaseH2O2concentrationsandforassessingtherelativeimportanceofvariousacidifyingmechanismsunderspecificatmosphericconditions.Hydroperoxidesinsamplestobeanalyzedareunstableinwaterandcandecayrapidlyduetobacterialactionorchemicalreactionwithotherconstituents.Thetestmethodincludesproceduresforsamplederivatizationandmethodsforestimatingandcorrectingforhydroperoxidedecay.1.1Thistestmethodcoversthedeterminationofhydroperoxides,whichincludehydrogenperoxide(H2O2)andcombinedorganicperoxides,insamplesofatmosphericwaterbythemethodofhorseradishperoxidasederivatizationandfluorescenceanalysisofthederiveddimer.,1.2Therangeofapplicablehydrogenperoxideconcentrationswasdeterminedtobe0.6-176.0x00D7;10x2212;6Mfromindependentlaboratorytestsofthetestmethod.1.3Theprimaryuseofthetestmethodisforhydrogenperoxide,butitmayalsobeusedtoquantitateorganichydroperoxides.Determinationsoforganichydroperoxideconcentrationlevelsupto30x00D7;10x2212;6Mmaybeadequatelyobtainedbycalibrationwithhydrogenperoxide.,Whileorganichydroperoxideshavenotbeendetectedatsignificantconcentrationlevelsinrainorcloudwater,theirpresencemaybetestedbyoperationofthetestmethodwiththeadditionofcatalasefordestructionofH2O2.1.4Becauseoftheinstabilityofhydroperoxidesinatmosphericwatersamples,propersamplecollection,at-collectionderivatization,andstringentqualitycontrolareessentialaspectsoftheanalyticalprocess.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z16
【国际标准分类号】:13_060_50
【页数】:6P.;A4
【正文语种】:英语