ASTM G91-1997(2004) 使用硫酸化极板技术检测大气中二氧化硫的标准实施规范

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【英文标准名称】:StandardPracticeforMonitoringAtmosphericSO2UsingtheSulfationPlateTechnique
【原文标准名称】:使用硫酸化极板技术检测大气中二氧化硫的标准实施规范
【标准号】:ASTMG91-1997(2004)
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:G01.04
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:空气质量;工艺;金属;磨损;腐蚀;监督(认可)
【英文主题词】:atmosphericcorrosion;exposures;measurement;platepreparation;sulfateanalysis;sulfationplates;sulfurdioxide
【摘要】:Atmosphericcorrosionofmetallicmaterialsisafunctionofmanyweatherandatmosphericvariables.Theeffectofspecificcorrodants,suchassulfurdioxide,canacceleratetheatmosphericcorrosionofmetalssignificantly.ThesulfationplatemethodprovidesasimpletechniquetoindependentlymonitorthelevelofSO2intheatmospheretoyieldaweightedaverageresult.SulfationplateresultsmaybeusedtocharacterizeatmosphericcorrosiontestsitesregardingtheeffectiveaveragelevelofSO2intheatmosphereattheselocations.Sulfationplatetestingisusefulindeterminingmicroclimate,seasonal,andlongtermvariationsintheeffectiveaveragelevelofSO2.TheresultsofsulfationplatetestsmaybeusedincorrelationsofatmosphericcorrosionrateswithatmosphericdatatodeterminethesensitivityofthecorrosionratetoSO2level.Thesulfationplatemethodmayalsobeusedwithothermethodstocharacterizetheatmosphereatsiteswherebuildingsorotherconstructionisplannedinordertodeterminetheextentofprotectivemeasuresrequiredformetallicmaterials.1.1ThispracticecoversaweightedaverageeffectiveSO2levelfora30-dayintervalthroughtheuseofthesulfationplatemethod,atechniqueforestimatingtheeffectiveSO2contentoftheatmosphere,andespeciallywithregardtotheatmosphericcorrosionofstationarystructuresorpanels.ThispracticeisaimedatdeterminingSO2levelsratherthansulfuricacidaerosoloracidprecipitation.1.2TheresultsofthispracticecorrelateapproximatelywithvolumetricSO2concentrations,althoughthepresenceofdeworcondensedmoisturetendstoenhancethecaptureofSO2intotheplate.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_20
【页数】:5P.;A4
【正文语种】: