【英文标准名称】:StandardTestMethodforSeparationandCollectionofParticulateandGaseousFluoridesintheAtmosphere(SodiumBicarbonate-CoatedGlassTubeandParticulateFilterMethod)
【原文标准名称】:大气中粒状物和气态氟化物分离及收集的标准试验方法(碳酸氢钠涂料玻璃管与粒状物过滤器法)
【标准号】:ASTMD3268-1991(2005)
【标准状态】:现行
【国别】:
【发布日期】:1991
【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】:职业安全;抽样方法;分离;空气;分析;保健;工艺;氟
【英文主题词】:ambientatmospheres;analysis;fluoride;gaseousfluoride;particulatefluoride;sampling
【摘要】:Thesodiumbicarbonatecoatedtubefiltermethodprovidesameansofseparatingandcollectingatmosphericgaseousfluorideandparticulatefluoridesamples.Sincethesamplesarecollectedonthedrytubeandfilter,thefluoridemaybeelutedwithasmallvolumeofeluant(seeSection10forspecificinstructionsonfluorideelution).Elutionintoasmallvolumeandthesensitivityoftheanalyticalmethodsemployedallowtheanalysisofthecollectedfluoridetofractionalpartsofamicrogrampercubicmetreonsamplestakenfora12-hperiod.1.1Thesodiumbicarbonate-coatedglasstubeandmembranefiltermethodprovidesameansfortheseparationandcollectionofgaseousatmosphericformsoffluoridereactivewithsodiumbicarbonateandparticulateformsoffluoridewhicharecollectedbyafilter.Thetestmethodisapplicableto12-hsamplingperiods,collecting1to500gofgaseousfluorideata15L/min[0.5ft3/min]samplingrateorabout0.1to50g/m3.Thelengthofthesamplingperiodcanthereforebeadjustedsothattheamountoffluoridecollectedwillfallwithinthisrange.Theactuallowerlimitofthetestmethodwilldependuponthesensitivityoftheanalyticalmethodemployedandthequalityofreagentsusedintubepreparationandanalysis.Itisrecommendedthatthelowerlimitofdetectionshouldbeconsideredastwotimesthestandarddeviationofthemonthlyarithmeticmeanblankvalue.Anyvaluesgreaterthantheblankbylessthanthisamountshouldbereportedas"blankvalue."1.2ThevaluesstatedinSIunitsaretoberegardedasstandard.Theinch-poundunitsinbracketsmaybeapproximate.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_20
【页数】:6P.;A4
【正文语种】: