Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-5293-2018 |
Nitrate-driven urban haze pollution during summertime over the North China Plain | |
Li, Haiyan1; Zhang, Qiang2; Zheng, Bo3; Chen, Chunrong2; Wu, Nana2; Guo, Hongyu4; Zhang, Yuxuan2; Zheng, Yixuan2; Li, Xin2; He, Kebin1,5 | |
2018-04-19 | |
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:8页码:5293-5306 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; France; USA |
英文摘要 | Compared to the severe winter haze episodes in the North China Plain (NCP), haze pollution during summertime has drawn little public attention. In this study, we present the highly time-resolved chemical composition of submicron particles (PM1) measured in Beijing and Xinxiang in the NCP region during summertime to evaluate the driving factors of aerosol pollution. During the campaign periods (30 June to 27 July 2015, for Beijing and 8 to 25 June 2017, for Xinxiang), the average PM1 concentrations were 35.0 and 64.2 mu g m(-3) in Beijing and Xinxiang. Pollution episodes characterized with largely enhanced nitrate concentrations were observed at both sites. In contrast to the slightly decreased mass fractions of sulfate, semivolatile oxygenated organic aerosol (SV-OOA), and low-volatility oxygenated organic aerosol (LV-OOA) in PM1, nitrate displayed a significantly enhanced contribution with the aggravation of aerosol pollution, highlighting the importance of nitrate formation as the driving force of haze evolution in summer. Rapid nitrate production mainly occurred after midnight, with a higher formation rate than that of sulfate, SV-OOA, or LV-OOA. Based on observation measurements and thermodynamic modeling, high ammonia emissions in the NCP region favored the high nitrate production in summer. Nighttime nitrate formation through heterogeneous hydrolysis of dinitrogen pentoxide (N2O5) enhanced with the development of haze pollution. In addition, air masses from surrounding polluted areas during haze episodes led to more nitrate production. Finally, atmospheric particulate nitrate data acquired by mass spectrometric techniques from various field campaigns in Asia, Europe, and North America uncovered a higher concentration and higher fraction of nitrate present in China. Although measurements in Beijing during different years demonstrate a decline in the nitrate concentration in recent years, the nitrate contribution in PM1 still remains high. To effectively alleviate particulate matter pollution in summer, our results suggest an urgent need to initiate ammonia emission control measures and further reduce nitrogen oxide emissions over the NCP region. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000430424600001 |
WOS关键词 | POSITIVE MATRIX FACTORIZATION ; FINE-PARTICLE PH ; ABSORPTION PHOTOMETRY ; SEASONAL-VARIATIONS ; SUBMICRON AEROSOLS ; ORGANIC AEROSOLS ; AIR-POLLUTION ; CHEMISTRY ; EVOLUTION ; VARIABILITY |
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/28389 |
专题 | 地球科学 |
作者单位 | 1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Co, Beijing 100084, Peoples R China; 2.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing 100084, Peoples R China; 3.CEA CNRS UVSQ, Lab Sci Climat & Environm, UMR8212, Gif Sur Yvette, France; 4.Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA; 5.Tsinghua Univ, State Environm Protect Key Lab Sources & Control, Beijing 100084, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Haiyan,Zhang, Qiang,Zheng, Bo,et al. Nitrate-driven urban haze pollution during summertime over the North China Plain[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(8):5293-5306. |
APA | Li, Haiyan.,Zhang, Qiang.,Zheng, Bo.,Chen, Chunrong.,Wu, Nana.,...&He, Kebin.(2018).Nitrate-driven urban haze pollution during summertime over the North China Plain.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(8),5293-5306. |
MLA | Li, Haiyan,et al."Nitrate-driven urban haze pollution during summertime over the North China Plain".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.8(2018):5293-5306. |
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