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【英文标准名称】:StandardPracticesforCalibrationofOzoneMonitorsUsingTransferStandards
【原文标准名称】:使用传送标准对臭氧检测器的标准实施规程
【标准号】:ASTMD5011-1992(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1992
【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】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:boricacidtitration;gasphasetitration;ozone;primarystandard;transferstandard;Calibration--air/atmosphericanalysisinstruments;Ozone(O3);Photometry;Ultraviolet(UV)analysis--atmosphericapplications;Ultraviolet(UV)calibrat
【摘要】:ThereactivityandinstabilityofO3precludesthestorageofO3concentrationstandardsforanypracticallengthoftime,andprecludesdirectcertificationofO3concentrationsasSRM''s.Moreover,thereisnoavailableSRMthatcanbereadilyanddirectlyadaptedtothegenerationofO3standardsanalogoustopermeationdevicesandstandardgascylindersforsulfurdioxideandnitrogenoxides.DynamicgenerationofO3concentrationsisrelativelyeasywithasourceofultraviolet(UV)radiation.However,accuratelycertifyinganO3concentrationasaprimarystandardrequiresassayoftheconcentrationbyacomprehensivelyspecifiedanalyticalprocedure,whichmustbeperformedeverytimeastandardisneeded.TheprimaryUVstandardphotometers,whichareusuallyusedatafixedlocationundercontrolledconditions,areusedtocertifytransferstandardsthatarethentransportedtothefieldsiteswheretheambientozonemonitorsarebeingused.SeePracticeD5110.Theadvantagesofthisprocedureare:AllO3monitorsinagivennetworkorregionmaybetracedtoasingleprimarystandard.Theprimarystandardisusedatonlyonelocation,undercontrolledconditions.Transferstandardsaremoreruggedandmoreeasilyportablethanprimarystandards.Transferstandardsmaybeusedtointercomparevariousprimarystandards.1.1Thesepracticesdescribemeansforcalibratingambient,workplaceorindoorozonemonitors,usingtransferstandards.1.2Thesepracticesdescribefivetypesoftransferstandards:(A)Analyticalinstruments(B)Boricacidpotassiumiodide(BAKI)manualanalyticalprocedure(C)Gasphasetitrationwithexcessnitricoxide(D)Gasphasetitrationwithexcessozone(E)Ozonegeneratordevice.1.3Thesepracticesdescribeprocedurestoestablishtheauthorityoftransferstandards:qualification,certification,andperiodicrecertification.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSection8forspecificprecautionarystatements.
【中国标准分类号】:N56
【国际标准分类号】:13_040_01
【页数】:28P.;A4
【正文语种】:英语