Chemical characteristics and sources of PM2.5 in urban and rural sitesinthe North China Plain during summer
ZHOU Tian, YAN Cai-qing, LI Xiao-ying, CAI Jing, GUO Xiao-shuang, WANG Rui, WU Yu-sheng, ZENG Li-ming, ZHU Tong, ZHANG Yuan-hang, ZHENG Mei
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China
To study the chemical characteristics and sources of PM2.5 in the North China Plain (NCP), simultaneous fine particulate matter (PM2.5) was sampled simultaneously in Beijing and Wangdu (Hebei) as part of the summer campaign of CAREBEIJING-NCP 2014. The samples were analyzed for water-soluble ions, elements, organic carbon (OC), and elemental carbon (EC). The average mass concentration of PM2.5 was higher in Wangdu (71 ±38μg/m3) than in Beijing (51 ±31μg/m3), as were all the components of PM2.5. Secondary inorganic ions (SO42-, NO3-, NH4+, or SNA) dominated the PM2.5, and accounted for 60% of its mass. The highest percentages of SNA appeared in air masses from the south and southeast, and reached 60%~70% of PM2.5. Aerosol-crust enrichment factors of trace metals in Beijing were higher than in Wangdu. Industrial activities and dust were major sources of the elements. Biomass burning created up to 20%~40% of the PM2.5 during days when its influence was obvious. Back-trajectories showed that PM2.5 concentrations and major components at two sites were similar when the air masses came from the same direction, but different when the directions were different.
周甜, 闫才青, 李小滢, 蔡靖, 郭晓霜, 王锐, 吴宇声, 曾立民, 朱彤, 张远航, 郑玫. 华北平原城乡夏季PM2.5组成特征及来源研究[J]. 中国环境科学, 2017, 37(9): 3227-3236.
ZHOU Tian, YAN Cai-qing, LI Xiao-ying, CAI Jing, GUO Xiao-shuang, WANG Rui, WU Yu-sheng, ZENG Li-ming, ZHU Tong, ZHANG Yuan-hang, ZHENG Mei. Chemical characteristics and sources of PM2.5 in urban and rural sitesinthe North China Plain during summer. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(9): 3227-3236.
Cheng Y, He K B, Du Z Y, et al. Humidity plays an important role in the PM2.5 pollution in Beijing[J]. Environmental Pollution, 2015,197:68-75.
[2]
Du Z Y, He K B, Cheng Y, et al. A yearlong study of water-soluble organic carbon in Beijing Ⅱ:Light absorption properties[J]. Atmospheric Environment, 2014,89(2):235-241.
[3]
Mimura T, Ichinose T, Yamagami S, et al. Airborne particulate matter (PM2.5) and the prevalence of allergic conjunctivitis in Japan[J]. Science of the Total Environment, 2014,487:493-499.
[4]
Ostro B, Lipsett M, Reynolds P, et al. Long-Term Exposure to Constituents of Fine Particulate Air Pollution and Mortality:Results from the California Teachers Study[J]. Environmental Health Perspectives, 2010,118(3):363-369.
[5]
Gao M, Guttikunda S K, Carmichael G R, et al. Health impacts and economic losses assessment of the 2013 severe haze event in Beijing area[J]. Science of the Total Environment, 2015,511:553-561.
[6]
GB3095-2012环境空气质量标准[S].
[7]
Guo S, Hu M, Zamora M L, et al. Elucidating severe urban haze formation in China[J]. Proceedings of the National Academy of Sciences of the United States of America, 2014,111(49):17373-17378.
[8]
Huang R J, Zhang Y, Bozzetti C, et al. High secondary aerosol contribution to particulate pollution during haze events in China[J]. Nature, 2014,514(7521):218-222.
[9]
Zhao P S, Dong F, Yang Y D, et al. Characteristics of carbonaceous aerosol in the region of Beijing, Tianjin, and Hebei, China[J]. Atmospheric Environment, 2013,71(3):389-398.
[10]
Guo S, Hu M, Wang Z B, et al. Size-resolved aerosol water-soluble ionic compositions in the summer of Beijing:implication of regional secondary formation[J]. Atmospheric Chemistry and Physics, 2010,10(3):23955-23986.
[11]
Pan Y, Tian S, Li X, et al. Trace elements in particulate matter from metropolitan regions of Northern China:Sources, concentrations and size distributions[J]. Science of the Total Environment, 2015,537:9-22.
[12]
Zhao P S, Dong F, He D, et al. Characteristics of concentrations and chemical compositions for PM2.5 in the region of Beijing, Tianjin, and Hebei, China[J]. Atmospheric Chemistry and Physics, 2013,13(9):4631-4644.
[13]
Li X, Zhang Q, Zhang Y, et al. Source contributions of urban PM2.5 in the Beijing-Tianjin-Hebei region:Changes between 2006 and 2013 and relative impacts of emissions and meteorology[J]. Atmospheric Environment, 2015,123,Part A:229-239.
[14]
Lang J L, Cheng S Y, Wei W, et al. A study on the trends of vehicular emissions in the Beijing-Tianjin-Hebei (BTH) region, China[J]. Atmospheric Environment, 2012,62(15):605-614.
[15]
Liang X, Zou T, Guo B, et al. Assessing Beijing's PM2.5 pollution:severity, weather impact, APEC and winter heating[J]. Proceedings of the Royal Society A:Mathematical, Physical and Engineering Science, 2015,471(2182):1-20.
[16]
Pan Y, Wang Y, Sun Y, et al. Size-resolved aerosol trace elements at a rural mountainous site in Northern China:importance of regional transport[J]. Science of the Total Environment, 2013, 461-462:761-771.
[17]
Sun Y L, Jiang Q, Xu Y S, et al. Aerosol characterization over the North China Plain:Haze life cycle and biomass burning impacts in summer[J]. Journal of Geophysical Research:Atmospheres, 2016,121(5):2508-2521.
Lin P, Hu M, Deng Z, et al. Seasonal and diurnal variations of organic carbon in PM2.5in Beijing and the estimation of secondary organic carbon[J]. Journal of Geophysical Research:Atmospheres, 2009,114(D2):1013-1033.
[21]
Zhang X Y, Gong S L, Shen Z X, et al. Characterization of soil dust aerosol in China and its transport and distribution during 2001 ACE-Asia:1.Network observations[J]. Journal of Geophysical Research:Atmospheres, 2003,108(D9):469-474.
Sun Y L, Chen C, Zhang Y J, et al. Rapid formation and evolution of an extreme haze episode in Northern China during winter 2015[J]. Scientific Reports, 2016,6:1-9.
[24]
Wang Y, Zhuang G S, Tang A H, et al. The ion chemistry and the source of PM2.5 aerosol in Beijing[J]. Atmospheric Environment, 2005,39(21):3771-3784.
[25]
Zheng M, Salmon L G, Schauer J J, et al. Seasonal trends in PM2.5 source contributions in Beijing, China[J]. Atmospheric Environment, 2005,39(22):3967-3976.
[26]
Feng Y L, Chen Y J, Guo H, et al. Characteristics of organic and elemental carbon in PM2.5 samples in Shanghai, China[J]. Atmospheric Research, 2009,92(4):434-442.
[27]
Yao L, Yang L, Chen J, et al. Characteristics of carbonaceous aerosols:Impact of biomass burning and secondary formation in summertime in a rural area of the North China Plain[J]. Science of the Total Environment, 2016,557-558:520-530.
Duce R A, Hoffman G L, Zoller W H. Atmospheric trace metals at remote northern and southern hemisphere sites:pollution or natural?[J]. Science, 1975,187(4171):59-61.
[31]
Taylor S R, McLennan S M. The geochemical evolution of the continental crust[J]. Reviews of Geophysics, 1995,33(2):241-265.
Tian H Z, Zhu C Y, Gao J J, et al. Quantitative assessment of atmospheric emissions of toxic heavy metals from anthropogenic sources in China:historical trend, spatial distribution, uncertainties, and control policies[J]. Atmospheric Chemistry and Physics, 2015,15(17):10127-10147.
[34]
Nie W, Ding A J, Xie Y N, et al. Influence of biomass burning plumes on HONO chemistry in eastern China[J]. Atmospheric Chemistry and Physics, 2015,15(3):1147-1159.
[35]
Wang L L, Xin J Y, Li X, et al. The variability of biomass burning and its influence on regional aerosol properties during the wheat harvest season in North China[J]. Atmospheric Research, 2015, 157:153-163.
[36]
Duan F K, Liu X D, Yu T, et al. Identification and estimate of biomass burning contribution to the urban aerosol organic carbon concentrations in Beijing[J]. Atmospheric Environment, 2004,38(9):1275-1282.
[37]
Li X H, Wang S X, Duan L, et al. Particulate and trace gas emissions from open burning of wheat straw and corn stover in China[J]. Environmental Science and Technology, 2007,41(17):6052-6058.
