Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-17515-2018 |
Nitrate formation from heterogeneous uptake of dinitrogen pentoxide during a severe winter haze in southern China | |
Yun, Hui1; Wang, Weihao1; Wang, Tao1; Xia, Men1; Yu, Chuan1,2; Wang, Zhe1; Poon, Steven C. N.1; Yue, Dingli3; Zhou, Yan3 | |
2018-12-11 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:23页码:17515-17527 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Nitrate (NO3-) has become a major component of fine particulate matter (PM2.5) during hazy days in China. However, the role of the heterogeneous reactions of dinitrogen pentoxide (N2O5) in nitrate formation is not well constrained. In January 2017, a severe haze event occurred in the Pearl River Delta (PRD) of southern China during which high levels of PM2.5 (similar to 400 mu g m(-3)) and O-3 (similar to 160 ppbv) were observed at a semi-rural site (Heshan) in the western PRD. Nitrate concentrations reached 108 mu g m(-3) 3 (1 h time resolution), and the contribution of nitrate to PM2.5 was nearly 40 %. Concurrent increases in NO3- and ClNO2 (with a maximum value of 8.3 ppbv at a 1 min time resolution) were observed in the first several hours after sunset, indicating an intense N2O5 heterogeneous uptake by aerosols. The formation potential of NO3- via N2O5 heterogeneous reactions was estimated to be between 29.0 and 77.3 mu g m(-3) in the early hours (2 to 6 h) after sunset based on the measurement data, which could completely explain the measured increase in the NO3- concentration during the same time period. Daytime production of nitric acid from the gas-phase reaction of OH + NO2 was calculated with a chemical box model built using the Master Chemical Mechanism (MCM v3.3.1) and constrained by the measurement data. The integrated nocturnal nitrate formed via N2O5 chemistry was comparable to or even higher than the nitric acid formed during the day. This study confirms that N2O5 heterogeneous chemistry was a significant source of aerosol nitrate during hazy days in southern China. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000452770900004 |
WOS关键词 | MASTER CHEMICAL MECHANISM ; FINE PARTICULATE NITRATE ; N2O5 UPTAKE COEFFICIENTS ; MCM V3 PART ; TROPOSPHERIC DEGRADATION ; POLLUTED REGION ; NITRYL CHLORIDE ; RESIDUAL LAYER ; NORTHERN CHINA ; RURAL SITE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/24950 |
专题 | 地球科学 |
作者单位 | 1.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China; 2.Shandong Univ, Environm Res Inst, Jinan, Shandong, Peoples R China; 3.Guangdong Environm Monitoring Ctr, State Environm Protect Key Lab Reg Air Qual Monit, Guangzhou, Guangdong, Peoples R China |
推荐引用方式 GB/T 7714 | Yun, Hui,Wang, Weihao,Wang, Tao,et al. Nitrate formation from heterogeneous uptake of dinitrogen pentoxide during a severe winter haze in southern China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(23):17515-17527. |
APA | Yun, Hui.,Wang, Weihao.,Wang, Tao.,Xia, Men.,Yu, Chuan.,...&Zhou, Yan.(2018).Nitrate formation from heterogeneous uptake of dinitrogen pentoxide during a severe winter haze in southern China.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(23),17515-17527. |
MLA | Yun, Hui,et al."Nitrate formation from heterogeneous uptake of dinitrogen pentoxide during a severe winter haze in southern China".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.23(2018):17515-17527. |
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