State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
J Environ Sci (China). 2023 Jan;123:545-559. doi: 10.1016/j.jes.2022.10.033. Epub 2022 Oct 30.
The formation and aging mechanism of secondary organic aerosol (SOA) and its influencing factors have attracted increasing attention in recent years because of their effects on climate change, atmospheric quality and human health. However, there are still large errors between air quality model simulation results and field observations. The currently undetected components during the formation and aging of SOA due to the limitation of current monitoring techniques and the interactions among multiple SOA formation influencing factors might be the main reasons for the differences. In this paper, we present a detailed review of the complex dynamic physical and chemical processes and the corresponding influencing factors involved in SOA formation and aging. And all these results were mainly based the studies of photochemical smog chamber simulation. Although the properties of precursor volatile organic compounds (VOCs), oxidants (such as OH radicals), and atmospheric environmental factors (such as NO, SO, NH, light intensity, temperature, humidity and seed aerosols) jointly influence the products and yield of SOA, the nucleation and vapor pressure of these products were found to be the most fundamental aspects when interpreting the dynamics of the SOA formation and aging process. The development of techniques for measuring intermediate species in SOA generation processes and the study of SOA generation and aging mechanism in complex systems should be important topics of future SOA research.
近年来，由于二次有机气溶胶 (SOA) 的形成和老化机制及其影响因素对气候变化、大气质量和人类健康的影响，引起了越来越多的关注。然而，空气质量模型模拟结果与现场观测之间仍然存在较大误差。由于目前监测技术的局限性以及多个 SOA 形成影响因素之间的相互作用，可能是导致这种差异的主要原因。在本文中，我们详细回顾了 SOA 形成和老化过程中涉及的复杂动态物理和化学过程及其相应的影响因素。所有这些结果主要基于光化学烟雾箱模拟研究。尽管前体挥发性有机化合物 (VOCs)、氧化剂（如 OH 自由基）和大气环境因素（如 NO、SO、NH、光强、温度、湿度和种子气溶胶）的性质共同影响 SOA 的产物和产率，但在解释 SOA 形成和老化过程的动力学时，这些产物的成核和蒸气压被发现是最基本的方面。测量 SOA 生成过程中中间物种的技术的发展以及复杂体系中 SOA 生成和老化机制的研究应该是未来 SOA 研究的重要课题。
