【英文标准名称】:StandardTestMethodforDeterminationofVolatileOrganicChemicalsinAtmospheres(CanisterSamplingMethodology)
【原文标准名称】:测定大气中挥发性有机化学物质的标准试验方法(罐装抽样法)
【标准号】:ASTMD5466-2001(2007)
【标准状态】:现行
【国别】:
【发布日期】:2001
【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】:D22.05
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ambientatmospheres;analysis;atmospheres;canistersampling;gaschromatography-massspectrometry;indooratmospheres;sampling;volatileorganiccompounds;workplaceatmospheres
【摘要】:1.1Thistestmethoddescribesaprocedureforsamplingandanalysisofvolatileorganiccompounds(VOCs)inambient,indoor,orworkplaceatmospheres.Thetestmethodisbasedonthecollectionofairsamplesinstainlesssteelcanisterswithspeciallytreated(passivated)interiorsurfaces.Forsampleanalysis,aportionofthesampleissubsequentlyremovedfromthecanisterandthecollectedVOCsareselectivelyconcentratedbyadsorptionorcondensationontoatrap,subsequentlyreleasedbythermaldesorption,separatedbygaschromatography,andmeasuredbyamassspectrometricdetectororotherdetector(s).Thistestmethoddescribesproceduresforsamplingintocanisterstofinalpressuresbothaboveandbelowatmosphericpressure(respectivelyreferredtoaspressurizedandsubatmosphericpressuresampling).1.2ThistestmethodisapplicabletospecificVOCsthathavebeentestedanddeterminedtobestablewhenstoredincanisters.Numerouscompounds,manyofwhicharechlorinatedVOCs,havebeensuccessfullytestedforstoragestabilityinpressurizedcanisters(1-4).Althoughnotasextensive,documentationisalsoavailabledemonstratingstabilityofVOCsinsubatmosphericpressurecanisters.Whileinitialstudieswereconcentratedonnon-polarVOCs,informationonstoragestabilityhasbeenextendedtomanypolarcompoundsaswell(5-7).1.3Theprocedureforcollectingthesampleinvolvestheuseofinletlinesandairfilters,flowrateregulatorsforobtainingtime-integratedsamples,andinthecaseofpressurizedsamples,anairpump.Canistersamplershavebeendesignedtoautomaticallystartandstopthesamplecollectionprocessusingelectronicallyactuatedvalvesandtimers(8-10).Aweatherproofshelterisrequiredifthesampleristobeusedoutside.1.4Theorganiccompoundsthathavebeensuccessfullymeasuredatsingle-digitparts-per-billionbyvolume(ppbv)levelswiththistestmethodarelistedinTable1.ThistestmethodisapplicabletoVOCconcentrationsrangingfromthedetectionlimitto300ppbv.Abovethisconcentration,samplesrequiredilutionwithdryultra-high-puritynitrogenorair.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Safetypracticesshouldbepartoftheuser''sSOPmanual.
【中国标准分类号】:G04
【国际标准分类号】:13_040_01
【页数】:21P.;A4
【正文语种】: