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DOI	10.5194/acp-22-13467-2022
	Significant formation of sulfate aerosols contributed by the heterogeneous drivers of dust surface
	Wang, Tao; Liu, Yangyang; Cheng, Hanyun; Wang, Zhenzhen; Fu, Hongbo; Chen, Jianmin; Zhang, Liwu
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	13467
结束页码	13493
卷号	22 期号:20 页码:27
英文摘要	The importance of dust heterogeneous oxidation in the removal of atmospheric SO2 and formation of sulfate aerosols is not adequately understood. In this study, the Fe-, Ti-, and Al-bearing components, Na+, Cl-, K+, and Ca2+ of the dust surface, were discovered to be closely associated with the heterogeneous formation of sulfate. Regression models were then developed to make a reliable prediction of the heterogeneous reactivity based on the particle chemical compositions. Further, the recognized gas-phase, aqueous-phase, and heterogeneous oxidation routes were quantitatively assessed and kinetically compared by combining the laboratory work with a modelling study. In the presence of 55 mu g m(-3) airborne dust, heterogeneous oxidation accounts for approximately 28.6 % of the secondary sulfate aerosols during nighttime, while the proportion decreases to 13.1 % in the presence of solar irradiation. On the dust surface, heterogeneous drivers (e.g. transition metal constituents, water-soluble ions) are more efficient than surface-adsorbed oxidants (e.g. H2O2, NO2, O-3) in the conversion of SO2, particularly during nighttime. Dust heterogeneous oxidation offers an opportunity to explain the missing sulfate source during severe haze pollution events, and its contribution proportion in the complex atmospheric environments could be even higher than the current calculation results. Overall, the dust surface drivers are responsible for the significant formation of sulfate aerosols and have profound impacts on the atmospheric sulfur cycling.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000869699800001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273290
作者单位	Fudan University
推荐引用方式 GB/T 7714	Wang, Tao,Liu, Yangyang,Cheng, Hanyun,et al. Significant formation of sulfate aerosols contributed by the heterogeneous drivers of dust surface[J],2022,22(20):27.
APA	Wang, Tao.,Liu, Yangyang.,Cheng, Hanyun.,Wang, Zhenzhen.,Fu, Hongbo.,...&Zhang, Liwu.(2022).Significant formation of sulfate aerosols contributed by the heterogeneous drivers of dust surface.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(20),27.
MLA	Wang, Tao,et al."Significant formation of sulfate aerosols contributed by the heterogeneous drivers of dust surface".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.20(2022):27.