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J Environ Manage

Title:		Vertical distributions and potential sources of wintertime atmospheric pollutants and the corresponding ozone production on the coast of Bohai Sea
Author(s):		Xing C; Liu C; Hong Q; Liu H; Wu H; Lin J; Song Y; Chen Y; Liu T; Hu Q; Tan W; Lin H;
Address:		"Key Lab of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China. Key Lab of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei, 230031, China; Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Key Laboratory of Precision Scientific Instrumentation of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei, 230026, China. Electronic address: chliu81@ustc.edu.cn. School of Environment and Civil Engineering, Jiangnan University, Wuxi, 214122, China. Electronic address: hongqq@jiangnan.edu.cn. School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026, China. School of Environmental Science and Optoelectronic Technology, University of Science and Technology of China, Hefei, 230026, China. Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, 230026, China"
Journal Title:		J Environ Manage
Year:		2022
Volume:		20220718
Issue:
Page Number:		115721 -
DOI:		10.1016/j.jenvman.2022.115721
ISSN/ISBN:		1095-8630 (Electronic) 0301-4797 (Linking)
Abstract:		"This study investigated the wintertime vertical distributions and source areas of aerosols, NO(2), and HCHO in a coastal city of Dongying from December 2020 to March 2021, using ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) and a potential source contribution function (PSCF) model, respectively. Moreover, the chemical production sensitivity of O(3) at different height layers was analyzed using HCHO/NO(2) ratios. The results revealed that the wintertime averaged highest concentrations of aerosol (1.25 km(-1)), NO(2) (14.81 ppb), and HCHO (2.32 ppb) were mainly distributed at the surface layer, 100-200 m layer, and 200-300 m layer, respectively. Regarding the diurnal cycles, high concentrations of aerosol (>1.4 km(-1)) and NO(2) (>16.0 ppb) usually appeared in the early morning and late afternoon, while high concentrations of HCHO (>2.5 ppb) usually occurred during 12:00-15:00. The PSCF model revealed that the wintertime aerosol mainly originated from Shandong, northern Jiangsu, Korea, and the northwestern Mongolian Plateau. Below 200 m, NO(2) was mainly from western Shandong, whereas above 600 m, it was mainly from northern Shandong and the Beijing-Tianjin-Hebei (BTH) region. The corresponding sources for HCHO were central and southern Shandong (below 200 m) and northern Shandong, northern Jiangsu, and southeastern BTH (above 600 m). In addition, the chemical production sensitivity of O(3) below 100 m was observed only in the VOC-limited regime. The percentages of O(3) production under the NO(x)-limited, NO(x)-VOC-limited, and VOC-limited regimes were 10.75% (31.18%), 4.30% (19.35%), and 84.95% (49.47%) at the 500-600 m (900-1000 m) layer. This study has guiding significance for the coordinated control of PM(2.5) and O(3), and can assist in the implementation of regional joint prevention and control strategies for air pollutants"
Keywords:		*Air Pollutants/analysis China Environmental Monitoring/methods *Environmental Pollutants Nitrogen Dioxide/analysis *Ozone/analysis *Volatile Organic Compounds/analysis;
Notes:		"MedlineXing, Chengzhi Liu, Cheng Hong, Qianqian Liu, Hanyang Wu, Hongyu Lin, Jinan Song, Yuhang Chen, Yujia Liu, Ting Hu, Qihou Tan, Wei Lin, Hua eng England 2022/07/22 J Environ Manage. 2022 Oct 1; 319:115721. doi: 10.1016/j.jenvman.2022.115721. Epub 2022 Jul 18"