BS EN 14662-3:2015规定了一种半连续测量方法，用于测定 基于环境空气中苯浓度的自动采样和分析 色谱法。本欧洲标准描述了性能特征，并设定了 选择合适的自动气相色谱仪（GC）所需的相关最低标准 型式认证试验的方法。它还包括评估分析仪是否适合在实验室中使用 特定的固定地点，以满足指令附录I中规定的数据质量要求 2008/50/EC[1]和取样、校准和使用质量保证期间的要求。本方法适用于测定环境空气中苯的质量浓度 苯含量高达50µg/m3的空气。该浓度范围代表了产品的认证范围 型式认证试验。 根据环境空气中的水平，可以使用其他范围。注1:当标准用于指令要求的测量以外的其他目的时 2008/50/EC，范围和不确定度要求可能不适用。该方法适用于测定划分为以下区域的环境空气中苯的浓度: 农村地区、城市背景地区和交通导向的地点以及受影响的地点 工业来源。结果以µg/m3（在20°C和101.3 kPa下）表示。注2:50µg/m3的苯相当于15,4 nmol/mol的苯。本欧洲标准包含针对不同用户群体的信息。第5至7条及附件C和D载有关于苯原则的一般信息 通过自动气相色谱和取样设备进行测量。第8条和附件E专门针对进行型式认证的试验室和实验室 苯分析仪的测试。这些章节包含以下信息:型式认证试验条件、试验程序和试验要求；分析仪性能要求；型式认证试验结果的评估；苯分析仪测量结果的不确定度评定 型式认证试验结果。条例草案第9至11条及附件F的目的，是监察执行实际工作的网络 环境空气中苯的测量。这些章节包含以下信息:监测网络中分析仪的初始安装和验收测试；持续质量保证/质量控制；测量结果的计算和报告；评估实际监测条件下测量结果的不确定度。交叉引用:EN 15267-1EN 15267-2EN ISO 6142ISO 6142EN ISO 6143ISO 6143EN ISO 6144ISO 6144EN ISO 6145-4ISO 6145-4EN ISO 6145- 6ISO 6145-6EN ISO 6145-7ISO 6145-7EN ISO 6145-8ISO 6145-8EN ISO 6145-9ISO 6145-9EN ISO 6145-10ISO 6145-10EN ISO 14956ISO 14956ISO/IEC指南98-3:2008GUM:19952008/50/ECJCGM 200:2012EN ISO 9001ISO/IEC 17025ISO/IEC 17025购买本文件时提供的所有当前修订版。

BS EN 14662-3:2015 specifies a semi-continuous measurement method for the determination of the concentration of benzene present in ambient air based on automated sampling and analysis by gas chromatography. This European Standard describes the performance characteristics and sets the relevant minimum criteria required to select an appropriate automated gas chromatograph (GC) by means of type approval tests. It also includes the evaluation of the suitability of an analyser for use in a specific fixed site so as to meet the data quality requirements as specified in Annex I of Directive 2008/50/EC [1] and requirements during sampling, calibration and quality assurance for use.The method is applicable to the determination of the mass concentration of benzene present in ambient air in the range up to 50 µg/m3 benzene. This concentration range represents the certification range for the type approval test. Other ranges may be used depending on the levels present in ambient air.NOTE 1 When the standard is used for other purposes than for measurements required by Directive 2008/50/EC, the ranges and uncertainty requirements may not apply.The method covers the determination of ambient air concentrations of benzene in zones classified as rural areas, urban-background areas and traffic-orientated locations and locations influenced by industrial sources.The results are expressed in µg/m3 (at 20 °C and 101,3 kPa).NOTE 2 50 µg/m3 of benzene corresponds to 15,4 nmol/mol of benzene.This European Standard contains information for different groups of users.Clauses 5 to 7 and Annexes C and D contain general information about the principles of benzene measurement by automated gas chromatography and sampling equipment.Clause 8 and Annex E are specifically directed towards test houses and laboratories that perform typeapproval testing of benzene analysers. These sections contain information about:type-approval test conditions, test procedures and test requirements;analyser performance requirements;evaluation of the type-approval test results;evaluation of the uncertainty of the measurement results of the benzene analyser based on the type-approval test results.Clauses 9 to 11 and Annex F are directed towards monitoring networks performing the practical measurements of benzene in ambient air. These sections contain information about:initial installation of the analyser in the monitoring network and acceptance testing;ongoing quality assurance/quality control;calculation and reporting of measurement results;evaluation of the uncertainty of measurement results under practical monitoring conditions.Cross References:EN 15267-1EN 15267-2EN ISO 6142ISO 6142EN ISO 6143ISO 6143EN ISO 6144ISO 6144EN ISO 6145-4ISO 6145-4EN ISO 6145-6ISO 6145-6EN ISO 6145-7ISO 6145-7EN ISO 6145-8ISO 6145-8EN ISO 6145-9ISO 6145-9EN ISO 6145-10ISO 6145-10EN ISO 14956ISO 14956ISO/IEC Guide 98-3:2008GUM:19952008/50/ECJCGM 200:2012EN ISO 9001ISO 9001EN ISO/IEC 17025ISO/IEC 17025All current amendments available at time of purchase are included with the purchase of this document.