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Environ Sci Technol

Title:		Sources of Organic Aerosol in China from 2005 to 2019: A Modeling Analysis
Author(s):		Zheng H; Chang X; Wang S; Li S; Zhao B; Dong Z; Ding D; Jiang Y; Huang G; Huang C; An J; Zhou M; Qiao L; Xing J;
Address:		"State Key Joint Laboratory of Environmental Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China. State Environmental Protection Key Laboratory of the Formation and Prevention of the Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai 200233, China. State Environmental Protection Key Laboratory of Sources and Control of Air Pollution Complex, Beijing 100084, China. Transport Planning and Research Institute, Ministry of Transport, Laboratory of Transport Pollution Control and Monitoring Technology, Beijing 100028, China. Institute for Atmospheric and Earth System Research/Physics, Faculty of Science, University of Helsinki, 00014 Helsinki, Finland"
Journal Title:		Environ Sci Technol
Year:		2023
Volume:		20230330
Issue:		14
Page Number:		5957 - 5966
DOI:		10.1021/acs.est.2c08315
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"Organic aerosol (OA) is a key component of fine particulate matter (PM(2.5)) and affects the human health and leads to climate change. With strict control measures for air pollutants during the last decade, the OA concentration in China declined slowly, while its sources remain unclear. In this study, we simulate the primary OA (POA) and secondary OA (SOA) concentrations from 2005 to 2019 with a state-of-the-art air quality model, Community Multiscale Air Quality (CMAQ, version 5.3.2) coupled with a Two-Dimensional Volatility Basis Set (2D-VBS) module, and a long-term emission inventory of full-volatility organic compounds in China and conduct source apportionment and sensitivity analysis. The simulation results show that, from 2005 to 2019, the OA concentration in China decreased from 24.0 to 12.8 mug/m(3) with most of the reduction from POA. The OA pollution from residential biomass burning declined 75% from 2005 to 2019, while it is still the major OA source in China. OA pollution from VCP increased by more than 2-fold and became the largest SOA source in China. From 2014 to 2019, the NO(x) control in China slightly offset the decrease of SOA concentration due to elevated oxidation capacity"
Keywords:		Humans *Environmental Monitoring/methods *Air Pollutants/analysis Particulate Matter/analysis China Aerosols/analysis 2d-vbs Cmaq organic aerosol source apportionment;
Notes:		"MedlineZheng, Haotian Chang, Xing Wang, Shuxiao Li, Shengyue Zhao, Bin Dong, Zhaoxin Ding, Dian Jiang, Yueqi Huang, Guanghan Huang, Cheng An, Jingyu Zhou, Min Qiao, Liping Xing, Jia eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2023/03/31 Environ Sci Technol. 2023 Apr 11; 57(14):5957-5966. doi: 10.1021/acs.est.2c08315. Epub 2023 Mar 30"