Measurement of heterogeneous uptake of NO2 on inorganic particles, sea water and urban grime
文献类型：期刊论文
| 作者 | Yu, Chuan; Wang, Zhe; Ma, Qingxin; Xue, Likun; George, Christian; Wang, Tao |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
 |
| 出版日期 | 2021-08 |
| 卷号 | 106页码:124-135 |
| 关键词 | NO2 uptake HONO source Heterogeneous uptake coefficient Urban grime |
| ISSN号 | 1001-0742 |
| 英文摘要 | Heterogeneous reactions of NO2 on different surfaces play an important role in atmospheric NOx removal and HONO formation, having profound impacts on photochemistry in polluted urban areas. Previous studies have suggested that the NO2 uptake on the ground or aerosol surfaces could be a dominant source for elevated HONO during the daytime. However, the uptake behavior of NO2 varies with different surfaces, and different uptake coefficients were used or derived in different studies. To obtain a more holistic picture of heterogeneous NO2 uptake on different surfaces, a series of laboratory experiments using different flow tube reactors was conducted, and the NO2 uptake coefficients (gamma) were determined on inorganic particles, sea water and urban grime. The results showed that heterogeneous reactions on those surfaces were generally weak in dark conditions, with the measured gamma varied from <10(-8) to 3.2 x 10(-7) under different humidity. A photo-enhanced uptake of NO2 on urban grime was observed, with the obvious formation of HONO and NO from the heterogeneous reaction. The photo-enhanced gamma was measured to be 1.9 x 10(-6) at 5% relative humidity (RH) and 5.8 x 10(-6) at 70% RH on urban grime, showing a positive RH dependence for both NO2 uptake and HONO formation. The results demonstrate an important role of urban grime in the daytime NO2-to-HONO conversion, and could be helpful to explain the unknown day-time HONO source in the polluted urban area. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45621]  |
| 专题 | 生态环境研究中心_大气污染控制中心 |
| 作者单位 | 1.Shandong Univ, Environm Res Inst, Qingdao 266237, Peoples R China 2.Univ Lyon, Univ Claude Bernard Lyon 1, CNRS, Inst Rech Catalyse & Environm Lyon IRCELYON, F-69626 Villeurbanne, France 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 4.Hong Kong Univ Sci & Technol, Div Environm & Sustainabil, Hong Kong 999077, Peoples R China 5.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu, Chuan,Wang, Zhe,Ma, Qingxin,et al. Measurement of heterogeneous uptake of NO2 on inorganic particles, sea water and urban grime[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2021,106:124-135. |
| APA | Yu, Chuan,Wang, Zhe,Ma, Qingxin,Xue, Likun,George, Christian,&Wang, Tao.(2021).Measurement of heterogeneous uptake of NO2 on inorganic particles, sea water and urban grime.JOURNAL OF ENVIRONMENTAL SCIENCES,106,124-135. |
| MLA | Yu, Chuan,et al."Measurement of heterogeneous uptake of NO2 on inorganic particles, sea water and urban grime".JOURNAL OF ENVIRONMENTAL SCIENCES 106(2021):124-135. |
入库方式： OAI收割
来源：生态环境研究中心
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