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Sci Total Environ

Title:		A gridded emission inventory of semi-volatile and intermediate volatility organic compounds in China
Author(s):		Wu L; Ling Z; Liu H; Shao M; Lu S; Wu L; Wang X;
Address:		"School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China. School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai 519082, China. Electronic address: lingzhh3@mail.sysu.edu.cn. State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China. Institute for Environmental and Climate Research, Jinan University, Guangzhou 510632, China. College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. Institute for Environmental and Climate Research, Jinan University, Guangzhou 510632, China. Electronic address: eciwxm@jnu.edu.cn"
Journal Title:		Sci Total Environ
Year:		2021
Volume:		20201102
Issue:
Page Number:		143295 -
DOI:		10.1016/j.scitotenv.2020.143295
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"An emission inventory of precursors is a prerequisite for the simulation of secondary organic aerosol (SOA), which could provide valuable information on the evolution of precursors, formation of SOA, and its influence on fine particle (PM(2.5)) abundance, oxidative capacity, and climate change. However, an emission inventory of semi-volatile and intermediate volatility organic compounds (S/IVOCs), the key precursor of SOA, particularly the gridded inventory that is appropriate for input into regional air quality models, remains limited in China, leading to an incomplete understanding of S/IVOCs sources and roles in SOA formation and the atmospheric environment. Therefore, a gridded emission inventory of S/IVOCs in China for 2016 was developed based on ample source-specific measured data on emission ratios of S/IVOCs to primary organic aerosols (POA) from literatures. The total emission of S/IVOCs was estimated to be 9.6 Tg, and industry and residential sectors were major sources of S/IVOCs, with contributions of 48.0% and 30.2%, respectively. The spatial variations suggested that S/IVOC emissions were mainly distributed in the highly industrialized and urbanized regions in China, such as Beijing-Tianjin-Hebei (BTH), the Yangtze River Delta (YRD), the Pearl River Delta (PRD), and the Sichuan-Chongqing (SC) regions, though the contributions and temporal patterns varied between different regions. Furthermore, uncertainty of the emission inventory was estimated to be within the range of -66%-153%, which was mainly attributed to emission ratios of IVOCs/POA for industry, transportation, and power plants. The gridded emission inventory developed in this study can be used to estimate the emissions of S/IVOCs in different regions, and can be applied to different models for a better understanding of the environmental effects of S/IVOCs"
Keywords:		China Semi-volatile and intermediate volatility organic compounds Uncertainties Updated emission inventory;
Notes:		"PubMed-not-MEDLINEWu, Liqing Ling, Zhenhao Liu, Huan Shao, Min Lu, Sihua Wu, Luolin Wang, Xuemei eng Netherlands 2020/11/14 Sci Total Environ. 2021 Mar 20; 761:143295. doi: 10.1016/j.scitotenv.2020.143295. Epub 2020 Nov 2"