Sulfur isotope composition during heterogeneous oxidation of SO2 on mineral dust: The effect of temperature, relative humidity, and light intensity

doi:10.1016/j.atmosres.2021.105513

	Sulfur isotope composition during heterogeneous oxidation of SO2 on mineral dust: The effect of temperature, relative humidity, and light intensity
	Xu, Mingyi 1; Qiu, Pengxiang 1; He, Yuxuan 1; Guo, Shixiang 1; Bai, Yanjing 1; Zhang, Heyan 1; Zhao, Shuang 1; Shen, Xiaoyu 1; Zhu, Bin 2; Guo, Qingjun 3
刊名	ATMOSPHERIC RESEARCH
	2021-06-01
卷号	254 页码:6
关键词	delta S-34 Fractionation Meteorological factor
ISSN号	0169-8095
DOI	10.1016/j.atmosres.2021.105513
通讯作者	Qiu, Pengxiang(pxqiu@nuist.edu.cn) ; Guo, Zhaobing(guocumt@nuist.edu.cn)
英文摘要	Sulfate as the major constituent of atmospheric aerosol plays a key role in aerosol formation and aging processes. However, little attention has been paid to the impacts of mineral dust on the oxidation of SO2, along with the effects of temperature, moisture, and light intensity. In this study, the influences of these parameters on the formation of sulfate and sulfur isotope composition were investigated in detail. Temperature promoted the heterogeneous oxidation of SO2 on the surface of hematite (alpha-Fe2O3), while excessive temperature was unfavorable for sulfate formation. Besides, the effect of temperature on sulfur isotope fractionation was not apparent. In addition, relative humidity (RH, < 40%) boosted the oxidation of SO2 with the concurrent enrichment of heavy isotope. Meanwhile, light with high intensity inhibited the formation of sulfate due to the photo-induced reductive dissolution of hematite, and had little effects on the sulfur isotope compositions. Furthermore, compared with other minerals, alpha-Fe2O3 exhibited greater uptake capacity of SO2, favoring the enrichment of light sulfur isotopes, whereas the enrichment of heavy sulfur isotopes existed on the surface of MgO. This study contributes to the investigation of the heterogeneous oxidation of SO2 and provides useful parameters for atmospheric modeling studies.
资助项目	National Natural Science Foundation of China[41873016] ; National Natural Science Foundation of China[51908294] ; National Natural Science Foundation of China[41625006] ; National key R&D program of China[9154422902] ; Jiangsu Province 333 Talent Project[BRA2018033] ; Natural Science Foundation of Jiangsu Province[BK20190718]
WOS研究方向	Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000636300300003
资助机构	National Natural Science Foundation of China ; National key R&D program of China ; Jiangsu Province 333 Talent Project ; Natural Science Foundation of Jiangsu Province
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/161908]
专题	中国科学院地理科学与资源研究所
通讯作者	Qiu, Pengxiang; Guo, Zhaobing
作者单位	1.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Atmospher Environm & Equip, Sch Environm Sci & Engn, Jiangsu Key Lab Atmospher Environm Monitoring & P, Nanjing 210044, Peoples R China 2.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing 210044, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Xu, Mingyi,Qiu, Pengxiang,He, Yuxuan,et al. Sulfur isotope composition during heterogeneous oxidation of SO2 on mineral dust: The effect of temperature, relative humidity, and light intensity[J]. ATMOSPHERIC RESEARCH,2021,254:6.
APA	Xu, Mingyi.,Qiu, Pengxiang.,He, Yuxuan.,Guo, Shixiang.,Bai, Yanjing.,...&Guo, Zhaobing.(2021).Sulfur isotope composition during heterogeneous oxidation of SO2 on mineral dust: The effect of temperature, relative humidity, and light intensity.ATMOSPHERIC RESEARCH,254,6.
MLA	Xu, Mingyi,et al."Sulfur isotope composition during heterogeneous oxidation of SO2 on mineral dust: The effect of temperature, relative humidity, and light intensity".ATMOSPHERIC RESEARCH 254(2021):6.