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Multiple Sulfur Isotopic Evidence for Sulfate Formation in Haze Pollution

文献类型：期刊论文

作者Han, Xiaokun; Dong, Xinyuan; Liu, Cong-Qiang; Wei, Rongfei; Lang, Yunchao1; Strauss, Harald3; Guo, Qingjun
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY
出版日期2023-11-30
卷号57期号:49页码:20647-20656
关键词sulfate sulfur isotopes SO2 oxidation haze North China
DOI10.1021/acs.est.3c05072
产权排序1
文献子类Article
英文摘要The mechanism of sulfate formation during winter haze events in North China remains largely elusive. In this study, the multiple sulfur isotopic composition of sulfate in different grain-size aerosol fractions collected seasonally from sampling sites in rural, suburban, urban, industrial, and coastal areas of North China are used to constrain the mechanism of SO2 oxidation at different levels of air pollution. The Delta S-33 values of sulfate in aerosols show an obvious seasonal variation, except for those samples collected in the rural area. The positive Delta S-33 signatures (0 parts per thousand < Delta S-33 < 0.439 parts per thousand) observed on clean days are mainly influenced by tropospheric SO2 oxidation and stratospheric SO2 photolysis. The negative Delta S-33 signatures (-0.236 parts per thousand < Delta S-33 < similar to 0 parts per thousand) observed during winter haze events (PM2.5 > 200 mu g/m(3)) are mainly attributed to SO2 oxidation by H2O2 and transition metal ion catalysis (TMI) in the troposphere. These results reveal that both the H2O2 and TMI pathways play critical roles in sulfate formation during haze events in North China. Additionally, these new data provide evidence that the tropospheric oxidation of SO2 can produce significant negative Delta S-33 values in sulfate aerosols.
WOS关键词SO2 OXIDATION ; HETEROGENEOUS CHEMISTRY ; SOURCE APPORTIONMENT ; ATMOSPHERIC SULFATE ; SEASONAL-VARIATIONS ; AEROSOL FORMATION ; FRACTIONATION ; WINTER ; NITRATE ; OXYGEN
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS记录号WOS:001124982900001
出版者AMER CHEMICAL SOC
源URL[http://ir.igsnrr.ac.cn/handle/311030/200984]  
专题资源利用与环境修复重点实验室_外文论文
作者单位1.Chinese Acad Sci, Ctr Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Munster, Inst Geol & Palaontol, D-48149 Munster, Germany
3.Tianjin Univ, Sch Earth Syst Sci, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Han, Xiaokun,Dong, Xinyuan,Liu, Cong-Qiang,et al. Multiple Sulfur Isotopic Evidence for Sulfate Formation in Haze Pollution[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2023,57(49):20647-20656.
APA Han, Xiaokun.,Dong, Xinyuan.,Liu, Cong-Qiang.,Wei, Rongfei.,Lang, Yunchao.,...&Guo, Qingjun.(2023).Multiple Sulfur Isotopic Evidence for Sulfate Formation in Haze Pollution.ENVIRONMENTAL SCIENCE & TECHNOLOGY,57(49),20647-20656.
MLA Han, Xiaokun,et al."Multiple Sulfur Isotopic Evidence for Sulfate Formation in Haze Pollution".ENVIRONMENTAL SCIENCE & TECHNOLOGY 57.49(2023):20647-20656.

入库方式： OAI收割

来源：地理科学与资源研究所

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