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【英文标准名称】:Ambientairquality-Standardmethodformeasurementofbenzeneconcentrations-Diffusivesamplingfollowedbysolventdesorptionandgaschromatography
【原文标准名称】:环境空气质量.苯浓度测量的标准方法.溶剂解吸和气相色谱法后的扩散取样
【标准号】:BSEN14662-5-2005
【标准状态】:现行
【国别】:英国
【发布日期】:2005-08-04
【实施或试行日期】:2005-08-04
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:环境空气;浓度(化学);扩散;苯含量;致癌物;危险的可裂变物质;解吸;空气净化;空气污染;抽样方法;分离;空气;保健;空气质量;分析;污染物;气相色谱法;浓缩;危险物质;定义;生产材料;测量;极限(数学);加热;溶剂;苯;基准方法
【英文主题词】:
【摘要】:ThispartofEN14662isinaccordancewiththegenericmethodologyselectedasthebasisoftheEuropeanUnionforthedeterminationofbenzeneinambientair[1]forthepurposeofcomparisonofmeasurementresultswithlimitvalueswithaone-yearreferenceperiod.ThispartofEN14662givesgeneralguidanceforthesamplingandanalysisofbenzeneinair,bydiffusivesampling,solventdesorptionandcapillarygaschromatography.ThispartofEN14662isvalidforthemeasurementofbenzeneinaconcentrationrangeofapproximately0,5ug/mto50ug/minanairsampletypicallycollectedoveraperiodofseveraldaysorseveralweeks.Anumberofdevicesarerecommendedforthesamplingofbenzene,eachdevicehavingadifferentrangeofapplicability,particularlywithregardtotheoptimumperiodofexposure.Theupperlimitoftheusefulrangeissetbythesorptivecapacityoftheactivatedcharcoaland,subjecttodilutionoftheanalysedsolution,bythelineardynamicrangeofthegaschromatographcolumnanddetectororbythesamplesplittingcapabilityoftheanalyticalinstrumentationused.Thelowerlimitoftheusefulrangedependsonthenoiselevelofthedetectorandonblanklevelsofbenzeneand/orinterferingartefactsonthesamplingdevicesorinthecarbondisulphide.Alternativesorbentstoactivatedcharcoalmaybeusedprovidedthattheequivalenceinperformancecharacteristicsoftheprocedureisdemonstrated.Alternativedesorptionsolventstocarbondisulphidemaybeusedprovidedthattheequivalenceinperformancecharacteristicsoftheprocedureisdemonstrated.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_20
【页数】:34P;A4
【正文语种】:英语