SO2在矿质颗粒物表面非均相反应研究进展

Research progress on heterogeneous reactions of SO2 on mineral particles

我国秋冬季雾霾频发,对人类健康造成巨大威胁。大气中SO2经系列物理化学反应产生的硫酸盐气溶胶是雾霾产生的元凶,其中矿质颗粒物参与的SO2表面非均相反应尤为重要,因此,厘清矿质颗粒物表面硫酸盐的形成机制是解析大气雾霾形成的关键科学问题。本文综述了SO2在不同类型氧化型矿质颗粒物表面非均相反应的研究进展,讨论了多污染物共存体系、湿度和光照对SO2非均相反应的影响,并对目前矿质颗粒物表面非均相反应研究中存在的问题进行了评述,旨在加深对矿质颗粒物促进硫酸盐形成机制的认识,助力揭示我国雾霾的成因,进而为雾霾治理提供理论指导。

Frequent events of winter haze in China have caused various health issues in large populations.It is believed that the sulfate aerosol produced by a series of physical and chemical reactions of SO2 is an important culprit of haze generation,and the heterogeneous reactions of SO2 on mineral particles is particularly important.Therefore,clarifying the formation mechanism of sulfate on mineral particles is a key scientific problem to analyze the formation of haze.In this paper,the research progresses about the typical heterogeneous reactions of SO2 on various mineral particles were reviewed,the effects of multi-pollutant coexistence system,humidity and light on heterogeneous reactions of SO2 were discussed,the future work related to heterogeneous reactions was also proposed.This paper aims to gain a deep understanding of the mechanism of mineral particles promoting the formation of sulfate and attempts to provide theoretical support for effective haze control.