Benzene, toluene, ethylbenzene, o -xylene, m -xylene, and styrene (subsequently referred to gas BTEX) are volatile organic compounds emitted from gasoline, fossil fuel combustion, paints, rubber products, and adhesives. Exposure to BTEX can make adverse health effects on humans. Therefore, BTEX in both ambient and indoor air is regulated and monitored to protect public health. For this supplementary comparison, a multicomponent mixture of BTEX in nitrogen has been chosen at an amount-of-substance fraction level of 100 nmol mol −1 that is more close to their emission levels from new buildings and construction materials. The supplementary comparison is designed to underpin calibration capabilities using BTEX gas mixtures that are prepared gravimetrically as transfer standards. == Main text To reach the main text of this paper, click on Final Report [https://www.bipm.org/utils/common/pdf/final_reports/QM/S12/APMP.QM-S12.pdf] . Note tha...

中文翻译：

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国际比较的最终报告APMP.QM-S12：氮气中100 nmol / mol的BTEX

苯，甲苯，乙苯，邻二甲苯，间二甲苯和苯乙烯（以下称为气体BTEX）是从汽油，化石燃料燃烧，油漆，橡胶产品和粘合剂中排放的挥发性有机化合物。暴露于BTEX会对人体产生不利的健康影响。因此，对环境和室内空气中的BTEX进行监管和监控，以保护公众健康。为了进行这种补充比较，已经选择了BTEX在氮气中的多组分混合物，其物质含量分数水平为100 nmol mol -1，更接近其从新建筑物和建筑材料中的排放水平。补充比较旨在通过使用重量分析作为传输标准制备的BTEX气体混合物来增强校准功能。==正文要达到本文的正文，单击最终报告[https://www.bipm.org/utils/common/pdf/final_reports/QM/S12/APMP.QM-S12.pdf]。请注意...