中等挥发性有机物研究进展

Research progress of intermediate volatility organic compounds

中等挥发性有机物是挥发性介于气态挥发性有机物和颗粒态难挥发性有机物的一类重要的有机物,其可以在气相和颗粒相进行配分,根据其结构可分为脂肪族及脂环族化合物、芳香族化合物以及杂环化合物等.近年来的研究发现其对大气氧化性及二次有机气溶胶的生成具有重要贡献,但由于测量技术及机理研究的局限,使得针对其研究和认识还处于起步阶段.本文从中等挥发性有机物的定义、测量技术、外场观测、实验室机制以及模型模拟等方面进行了综述.进一步针对已有关于中等挥发性有机物所面临的问题和挑战进行了展望.

Intermediate volatility organic compounds(IVOCs) are an important type of species that saturated vapor pressure between gaseous volatile organic compounds and particulate nonvolatile organic compounds. According to disparate structures, they can be divided into aliphatic and alicyclic compounds, aromatic compounds, and heterocyclic compounds. In recent years, it has been found that IVOCs have a significant contribution to the formation of atmospheric oxidization and secondary organic aerosol. However, due to the limitations of measurement technology and mechanism study,the research and understanding are still in the initial stage. This paper reviews the definition,measurement technologies, field observations, laboratory mechanisms, and model simulations of IVOCs. Furthermore, the problems and challenges faced have prospected.