ISO 10473-2000 环境空气滤膜介质上颗粒物质量测量β射线吸收法

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【英文标准名称】:Ambientair-Measurementofthemassofparticulatematteronafiltermedium-Beta-rayabsorptionmethod
【原文标准名称】:环境空气滤膜介质上颗粒物质量测量β射线吸收法
【标准号】:ISO10473-2000
【标准状态】:现行
【国别】:国际
【发布日期】:2000-04
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC146
【标准类型】:()
【标准水平】:()
【中文主题词】:试验;空气质量;空气污染;环境空气;颗粒物质的测定
【英文主题词】:Absorption;Airpollution;Airquality;Ambientair;Betaradiation;Definition;Definitions;Dustconcentration;Measurement;Metrology;Particles;Particulatemattermeasurement;Samplingmethods;Testing;Verification
【摘要】:ThisInternationalStandarddescribesamethodforthemeasurementofthemassofparticipatematterinambientairandisbasedontheabsorptionofbetaraysbytheparticulatematter.Thismethodappliestothedeterminationofconcentrationsrangingfromafewmicrogramspercubicmetretoafewmilligramspercubicmetrecontainedintheatmospheresofurban,ruralorindustrialareas.Thelowermassdetectionlimitofthemethodisusually15μgto30μgofdepositedmasspersquarecentimetreofsurfacearea,S,ofthefilter.Thismeans,forasamplingtimetof3handaflowrateqof1m/h,thattheconcentrationdetectionlimitrangesbetween5μg/mand10μg/m,computedasfollows:Concentration(μg/cm)·S(cm)/q(m/h)·1/t(h)SamplingtechniquesarenotincludedinthescopeofthisInternationalStandard.NOTETheconcentrationofparticulatematteriscalculatedbydividingthemassdepositedonafiltertapeorindividualfilter,bytheknownvolumeofairsampled.However,concentrationisdependentonthesamplingtechniqueused,forexample,thedesignofthesamplinginlet.Normally,forambient-airparticlesampling,largeparticlesarefilteredoutbymeansofasize-selectiveinlet(forexamplecascadeimpactororcyclonefiltration).Theparticlesizelimitisdefinedbythecharacteristicsofthesamplinghead.
【中国标准分类号】:Z04
【国际标准分类号】:13_040_20
【页数】:12P;A4
【正文语种】:英语