Measurement of organic nitrates productivity for evaluating air quality

为了评价二次有机气溶胶和光化学氧化剂等空气质量，必须了解各种挥发性有机化合物（VOCs）与大气自由基反应过程中有机硝酸盐（ONs）的生成特性。本研究尝试建立一种基于总ONs分析仪和化学微扰技术的ONs产率测定新方法。对几种VOCs的ONs产率进行了测定和比较。此外，成功地进行了ON形成的分支比的定量测定。这种方法可以改善数据库的有机氮的生产率，特别是对挥发性有机物的有机氮的生产率还没有报道。

For evaluation of air quality such as secondary organic aerosols and photochemical oxidants, it is essential to know characteristics of productivity of organic nitrates (ONs) during the reaction of various volatile organic compounds (VOCs) with atmospheric radicals. In this study, we tried to establish a new method for measurement of ONs productivity based on a total ONs analyzer and the chemical perturbation technique. ONs productivities of a few VOCs were measured and relatively compared. Furthermore, quantitative determination of the branching ratio for ONs formation was successfully conducted. This method can be promising for improvement of the database of ONs productivities, especially for VOCs whose ONs productivities have not been reported yet.