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Sci Total Environ

Title:		Oscillation cumulative volatile organic compounds on the northern edge of the North China Plain: Impact of mountain-plain breeze
Author(s):		Yao D; Tang G; Wang Y; Yang Y; Wang Y; Liu Y; Yu M; Liu Y; Yu H; Liu J; Hu B; Wang P; Wang Y;
Address:		"School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang 453007, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: tgq@dq.cern.ac.cn. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, China. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; University of Chinese Academy of Sciences, Beijing 100049, China. School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang 453007, China. Wuxi Cas Photonics Co., Ltd, Wuxi 214135, China. Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China. School of Environment, Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control, Ministry of Education, Henan Normal University, Xinxiang 453007, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; University of Chinese Academy of Sciences, Beijing 100049, China"
Journal Title:		Sci Total Environ
Year:		2022
Volume:		20220129
Issue:
Page Number:		153541 -
DOI:		10.1016/j.scitotenv.2022.153541
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Under weak weather systems, pollutants circulate on plains and hillsides by means of oscillatory mountain-plain breezes (MPB). To investigate the impact of MPB on ambient volatile organic compounds (VOCs) on the northern edge of the North China Plain (NCP) region, synchronous online VOCs observations were first performed in the southwestern (Beijing, urban area) and northeastern (Xinglong, background area) of the dominant wind directions from September 11, 2020, to October 13, 2020. The results revealed that during the observation period, the average mixing ratios of TVOCs in Beijing and Xinglong were 32.5 +/- 21.6 and 14.2 +/- 8.6 ppbv, respectively, and a coincident temporal evolution trend of VOCs was observed at the two sites. Combined with the results of the backward trajectory, southerly air transport led to a significant increase in VOCs concentration, and southerly airflow was usually accompanied by apparent MPB circulation. Furthermore, the occurrence of MPB led to a sharp increase (1.5 times) in VOCs concentration in both Beijing and Xinglong. This study indicates that the periodic oscillation of the MPB leads to the large-scale pollution of 'garbage out and garbage in', and the VOCs discharged by industry are the key to future control"
Keywords:		*Air Pollutants/analysis China Environmental Monitoring/methods *Ozone/analysis *Volatile Organic Compounds/analysis Wind Background area Mountain-plain breeze Urban area Volatile organic compounds;
Notes:		"MedlineYao, Dan Tang, Guiqian Wang, Yinghong Yang, Yuan Wang, Yiming Liu, Yusi Yu, Miao Liu, Yuting Yu, Hao Liu, Jingda Hu, Bo Wang, Pucai Wang, Yuesi eng Netherlands 2022/02/02 Sci Total Environ. 2022 May 15; 821:153541. doi: 10.1016/j.scitotenv.2022.153541. Epub 2022 Jan 29"