|
|
|
| Study on the characteristics and the cause of atmospheric O3 pollution in western urban of Shenzhen |
| WANG Chuan1,2, XIA Shi-yong2, CAO Li-ming2, YU Guang-he1, HUANG Xiao-feng2 |
1. Environmental Laboratory, PKU-HKUST ShenZhen-HongKong Institution(IER), Shenzhen 518057, China;
2. Key Laboratory for Urban Habitat Environmental Science and Technology, School of Environment and Energy, Shenzhen Graduate School, Peking University, Shenzhen 518055, China |
|
|
|
|
Abstract Based on the online monitoring data of atmospheric O3 at University Town that located in the western Shenzhen in the past 5years, combined with the comprehensive observation of atmospheric pollutants, the evolution trend of atmospheric O3 was obtained. In addition, the variations of meteorological conditions and the precursor's composition of O3 during the exceeding standard periods were deeply explored in order to grasp the causes. The resultsshow that the increase rate of the maximum 8-hour average mixing ratio of atmospheric O3 was 1.1×10-9/a, and the exceed-standard rate was over 6%. High temperature and low humidity meteorological conditions were more likely to promote atmospheric O3 formation. The increase of VOCs in the O3 exceeding standard periods (70%~95%) was significantly higher than that of NOx (28%), and the O3 high concentration was distributed in the high VOCs and low NOx region, indicating that the O3 formation was mainly controlled by VOCs in University Town of Shenzhen. The toluene to benzene ratio (T/B) over 10at night during the O3 exceeding standard periods suggesting that there may be a large amount of industrial emissions, while the consumption of OVOCs doubled at noon, indicating that OVOCs emitted by industrial activities may contribute significantly to daytime O3 production.
|
|
Received: 12 September 2019
|
|
|
|
|
|
| [1] |
唐孝炎,张远航,邵敏.大气环境化学-第2版[M]. 北京:高等教育出版社, 2006. Tang X Y, Zhang Y H, Shao M. Atmospheric environment chemistry[M]. Beijing:Higher Education Press, 2006.
|
| [2] |
Molina M J, Molina L T. Megacities and atmospheric pollution[J]. Air Repair, 2004,54(6):644-680.
|
| [3] |
Tao Y B, Huang W, Huang X L, et al. Estimated acute effects of ambient ozone and nitrogen dioxide on mortality in the Pearl River delta of southern China[J]. Environmental Health Perspectives, 2012, 120(3):393-398.
|
| [4] |
Lelieveld J, Evans J S, Fnais M, et al. The contribution of outdoor air pollution sources to premature mortality on a global scale[J]. Nature, 2015,525(7569):367-371.
|
| [5] |
Atkinson R W, Butland B K, Dimitroulopoulou C, et al. Long-term exposure to ambient ozone and mortality:a quantitative systematic review and meta-analysis of evidence from cohort studies[J]. Bmj Open, 2016,6(2):e009493.
|
| [6] |
Silva R A, Adelman Z, Fry M M et al. The impact of individual anthropogenic emissions sectors on the global burden of human mortality due to ambient air pollution[J]. Environmental Health Perspectives, 2016,124(11):1776-1784.
|
| [7] |
中华人民共和国环境保护部.2015年度中国环境状况公报[R]. 2016. Ministry of Environmental Protection of the People's Republic of China. China environmental status bulletin 2015[R]. 2016.
|
| [8] |
Xu X, Lin W, Wang T, et al. Long-term trend of surface ozone at a regional background station in eastern china 1991~2006:Enhanced variability[J]. Atmospheric Chemistry Physics Discussions, 2008,8(1):2595-2607.
|
| [9] |
Wang T, Wei X L, Ding A J, et al. Increasing surface ozone concentrations in the background atmosphere of southern China, 1994~2007[J]. Atmospheric Chemistry and Physics, 2009,9(16):6217-6227.
|
| [10] |
Yoo E C, Park O H. A study on the formation of photochemical air pollution and the allocation of a monitoring network in Busan[J]. Korean Journal of Chemical Engineering, 2010,27(2):494-503.
|
| [11] |
Murphy J G, Day D A, Cleary P A, et al. The weekend effect within and downwind of Sacramento:Part 2. Observational evidence for chemical and dynamical contributions[J]. Atmospheric Chemistry and Physics, 2006,6:11971-12019.
|
| [12] |
Xue L K, Wang T, Gao J, et al. Ground-level ozone in four Chinese cities:precursors, regional transport and heterogeneous processes[J]. Atmospheric Chemistry and Physics, 2014,14(23):13175-13188.
|
| [13] |
Li Y, Lau A K, Fung J C, et al. Ozone source apportionment(OSTA)to differentiate local regional and super-regional source contributions in the Pearl River delta region, China[J]. Journal of Geophysical Research Atmospheres, 2012,117:D15305.
|
| [14] |
Lindinger W, Hansel A,Jordan A. On-line monitoring of volatile organic compounds at pptv levels by means of proton-transfer-reaction mass spectrometry (PTR-MS)-Medical applications, food control and environmental research[J]. International Journal of Mass Spectrometry, 1998,173:191-241.
|
| [15] |
Wang C, Huang X F, Han Y, et al. Sources and potential photochemical roles of formaldehyde in an urban atmosphere in south China[J]. Journal of Geophysical Research Atmospheres, 2017, 122(21):11934-11947.
|
| [16] |
嵇萍,汪宇,陈多宏,等.台风登陆前珠江三角洲地区近地面O3浓度升高的原因初探[J]. 环境污染与防治, 2018,40(3):296-300. Ji P, Wang Y, Chen D H, et al. Causes for the surface O3 increase before a typhoon landing in the Pearl River Delta region[J]. Environment Pollution & Control, 2018,40(3):296-300.
|
| [17] |
严文莲,刘端阳,康志明,等.江苏臭氧污染特征及其与气象因子的关系[J]. 气象科学, 2019,39(4):477-487. Yan W L, Liu D Y, Kang Z M, et al. The characteristics of ozone pollution and its relationship with meteorological factors in Jiangsu[J]. Journal of the Meteorological Sciences, 2019,39(4):477-487.
|
| [1] |
ZHANG Yuan-yu, WANG Xin-ming, LIU Xiao-ling, ZHANG Yan-li, DILINUER·Talip, ZHANG Xiao-xiao, ABULIKEMU·Abulizi, LIU Wei. Volatile organic compounds (VOCs) in Dushanzi, Xinjiang: Compositions and contributions to the formation of O3 and SOA[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(5): 1915-1923. |
|
|
|
|
