Chemical characteristics of haze particles in Xi'an during Chinese Spring Festival: Impact of fireworks burning
Wu, C (Wu, Can)[ 1,4 ]; Wang, GH (Wang, Gehui)[ 1,2,3,4 ]; Wang, JY (Wang, Jiayuan)[ 1 ]; Li, JJ (Li, Jianjun)[ 1 ]; Ren, YQ (Ren, Yanqin)[ 1,5 ]; Zhang, L (Zhang, Lu)[ 1 ]; Cao, C (Cao, Cong)[ 1,4 ]; Li, J (Li, Jin)[ 1,4 ]; Ge, SS (Ge, Shuagshuang)[ 2 ]; Xie, YN (Xie, Yuning)[ 2 ]; Wang, XP (Wang, Xinpei)[ 2 ]; Xue, GY (Xue, Guoyan)[ 2 ]
2018-09
发表期刊JOURNAL OF ENVIRONMENTAL SCIENCES
卷号71页码:179-187
文章类型期刊论文
摘要Fireworks burning releases massive fine particles and gaseous pollutants, significantly deteriorating air quality during Chinese Lunar New Year (LNY) period. To investigate the impact of the fireworks burning on the atmospheric aerosol chemistry, 1-hr time resolution of PM2.5 samples in Xi'an during the winter of 2016 including the LNY were collected and detected for inorganic ions, acidity and liquid water content (LWC) of the fine aerosols. PM2.5 during the LNY was 167 ± 87 μg/m3, two times higher than the China National Ambient Air Quality Standard (75 μg/m3). K+ (28 wt.% of the total ion mass) was the most abundant ion in the LNY period, followed by SO42 − (25 wt.%) and Cl− (18 wt.%). In contrast, NO3− (34 wt.%) was the most abundant species in the haze periods (hourly PM2.5 > 75 μg/m3), followed by SO42 − (29.2 wt.%) and NH4+ (16.3 wt.%), while SO42 - (35 wt.%) was the most abundant species in the clean periods (hourly PM2.5 < 75 μg/m3), followed by NO3− (23.1 wt.%) and NH4+ (11 wt.%). Being different from the acidic nature in the non-LNY periods, aerosol in the LNY period presented an alkaline nature with a pH value of 7.8 ± 1.3. LWC during the LNY period showed a robust linear correlation with K2SO4 and KCl, suggesting that aerosol hygroscopicity was dominated by inorganic salts derived from fireworks burning. Analysis of correlations between the ratios of NO3−/SO42 − and NH4+/SO42 − indicated that heterogeneous reaction of HNO3 with NH3 was an important formation pathway of particulate nitrate and ammonium during the LNY period.
关键词Inorganic ions Aerosol acidity Liquid water content Composition and source Nitrate formation
DOI10.1016/j.jes.2018.04.008
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9663
专题黄土与第四纪地质国家重点实验室(2010~)
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Key Lab of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China;
2.Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai 210062, China;
3.Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China;
4.University of Chinese Academy of Sciences, Beijing 100049, China;
5.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
推荐引用方式
GB/T 7714
Wu, C ,Wang, GH ,Wang, JY ,et al. Chemical characteristics of haze particles in Xi'an during Chinese Spring Festival: Impact of fireworks burning[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2018,71:179-187.
APA Wu, C .,Wang, GH .,Wang, JY .,Li, JJ .,Ren, YQ .,...&Xue, GY .(2018).Chemical characteristics of haze particles in Xi'an during Chinese Spring Festival: Impact of fireworks burning.JOURNAL OF ENVIRONMENTAL SCIENCES,71,179-187.
MLA Wu, C ,et al."Chemical characteristics of haze particles in Xi'an during Chinese Spring Festival: Impact of fireworks burning".JOURNAL OF ENVIRONMENTAL SCIENCES 71(2018):179-187.
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