The European Committee for Standardisation (CEN) Technical Committee 264 ‘Air Quality’ has recently produced a standard method for the measurements of organic carbon and elemental carbon in PM_2.5 within its working group 35 in response to the requirements of European Directive 2008/50/EC. It is expected that this method will be used in future by all Member States making measurements of the carbonaceous content of PM_2.5. This paper details the results of a laboratory and field measurement campaign and the statistical analysis performed to validate the standard method, assess its uncertainty and define its working range to provide clarity and confidence in the underpinning science for future users of the method. The statistical analysis showed that the expanded combined uncertainty for transmittance protocol measurements of OC, EC and TC is expected to be below 25%, at the 95% level of confidence, above filter loadings of 2 μg cm⁻². An estimation of the detection limit of the method for total carbon was 2 μg cm⁻². As a result of the laboratory and field measurement campaign the EUSAAR2 transmittance measurement protocol was chosen as the basis of the standard method EN 16909:2017.

中文翻译：

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欧洲环境空气中有机碳和元素碳的测量方法的标准化：现场试验的结果以及测量不确定度和工作范围的确定

欧洲标准化委员会（CEN）技术委员会264'空气质量'最近根据其欧洲指令2008/50 /的要求，在其工作组35中制定了一种用于测量PM _2.5中有机碳和元素碳的标准方法。EC。预计将来所有会员国都将使用此方法来测量PM _2.5的碳含量。本文详细介绍了实验室和现场测量活动的结果，并进行了统计分析以验证标准方法，评估其不确定性并定义其工作范围，从而为该方法的未来用户提供了基础科学的清晰性和信心。统计分析表明，在95％的置信度下，对于OC，EC和TC的透射协议测量，扩展的组合不确定性预计将低于25％，高于2μgcm ^-2的过滤器负载。该方法对总碳的检测极限估计为2μgcm ^-2。实验室和现场测量运动的结果是，选择了EUSAAR2透射率测量协议作为标准方法EN 16909：2017的基础。