An unexpected large continental source of reactive bromine and chlorine with significant impact on wintertime air quality
文献类型：期刊论文
| 作者 | Peng, Xiang; Wang, Weihao; Xia, Men; Chen, Hui; Ravishankara, A. R.; Li, Qinyi; Saiz-Lopez, Alfonso; Liu, Pengfei; Zhang, Fei; Zhang, Chenglong |
| 刊名 | NATIONAL SCIENCE REVIEW
 |
| 出版日期 | 2021-07 |
| 卷号 | 8期号:7页码:- |
| 关键词 | BrCl reactive halogen oxidation coal burning air pollution North China |
| ISSN号 | 2095-5138 |
| 英文摘要 | Halogen atoms affect the budget of ozone and the fate of pollutants such as hydrocarbons and mercury. Yet their sources and significances in polluted continental regions are poorly understood. Here we report the observation of unprecedented levels (averaging at 60 parts per trillion) of bromine chloride (BrCl) at a mid-latitude site in North China during winter. Widespread coal burning in rural households and a photo-assisted process were the primary source of BrCl and other bromine gases. BrCl contributed about 55% of both bromine and chlorine atoms. The halogen atoms increased the abundance of 'conventional' tropospheric oxidants (OH, HO2 and RO2) by 26%-73%, and enhanced oxidation of hydrocarbon by nearly a factor of two and the net ozone production by 55%. Our study reveals the significant role of reactive halogen in winter atmospheric chemistry and the deterioration of air quality in continental regions where uncontrolled coal combustion is prevalent. |
| WOS研究方向 | Multidisciplinary Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45615]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Colorado State Univ, Dept Chem, Ft Collins, CO 80523 USA 2.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China 3.Fudan Univ, Dept Environm Sci & Engn, Shanghai 200433, Peoples R China 4.Fudan Univ, Inst Atmospher Sci, Shanghai 200433, Peoples R China 5.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA 6.CSIC, Inst Phys Chem Rocasolano, Dept Atmospher Chem & Climate, Madrid 28006, Spain |
| 推荐引用方式 GB/T 7714 | Peng, Xiang,Wang, Weihao,Xia, Men,et al. An unexpected large continental source of reactive bromine and chlorine with significant impact on wintertime air quality[J]. NATIONAL SCIENCE REVIEW,2021,8(7):-. |
| APA | Peng, Xiang.,Wang, Weihao.,Xia, Men.,Chen, Hui.,Ravishankara, A. R..,...&Wang, Tao.(2021).An unexpected large continental source of reactive bromine and chlorine with significant impact on wintertime air quality.NATIONAL SCIENCE REVIEW,8(7),-. |
| MLA | Peng, Xiang,et al."An unexpected large continental source of reactive bromine and chlorine with significant impact on wintertime air quality".NATIONAL SCIENCE REVIEW 8.7(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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