Sulfur isotope composition during heterogeneous oxidation of SO2 on mineral dust: The effect of temperature, relative humidity, and light intensity | |
Xu, Mingyi1; Qiu, Pengxiang1; He, Yuxuan1; Guo, Shixiang1; Bai, Yanjing1; Zhang, Heyan1; Zhao, Shuang1; Shen, Xiaoyu1; Zhu, Bin2; Guo, Qingjun3 | |
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. |
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