Growing awareness of the impact of monoterpenes on climate, atmospheric chemistry, and indoor air quality has necessitated the development of measurement standards to globally monitor and control their emissions. For National Metrology Institutes to develop such standards, it is essential that they demonstrate measurement equivalence for assigned values at the highest levels of accuracy. This report describes the results of a pilot comparison for 4 key monoterpene species: α-pinene, 3-carene, R-limonene and 1,8-cineole, at a nominal amount-of-substance fraction of 2.5 nmol mol −1 . The objective of this comparison is to evaluate participant capabilities to measure trace-level monoterpenes using their own calibration techniques. == Main text To reach the main text of this paper, click on Final Report [https://www.bipm.org/utils/common/pdf/final_reports/QM/P177/CCQM-P177.pdf] . Note that this text is that which appears in Appendix B of the BIPM ke...

中文翻译：

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中试比较CCQM-P177-氮气中2.5 nmol mol -1的单萜最终报告

人们日益意识到单萜对气候，大气化学和室内空气质量的影响，因此需要制定测量标准以全球监测和控制其排放。为了使国家计量学会制定此类标准，至关重要的是，它们必须以最高的准确度证明分配值的测量等效性。该报告描述了4种主要单萜物种（标称物质含量分数为2.5 nmol mol -1）的α-pine烯，3-烯，R-柠檬烯和1,8-桉树脑的试验比较结果。进行比较的目的是评估参与者使用自己的校准技术测量痕量单萜的能力。==正文要访问本文的正文，请单击最终报告[https：//www.bipm。org / utils / common / pdf / final_reports / QM / P177 / CCQM-P177.pdf]。请注意，此文本显示在BIPM附录B中。