气候变化领域集成服务门户(CCPortal): Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM2.5 in Chengdu, southwest China, based on 3-year measurements

CCPortal

DOI	10.5194/acp-20-11181-2020
	Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM2.5 in Chengdu, southwest China, based on 3-year measurements
	Kong L.; Feng M.; Liu Y.; Zhang Y.; Zhang C.; Li C.; Qu Y.; An J.; Liu X.; Tan Q.; Cheng N.; Deng Y.; Zhai R.; Wang Z.
发表日期	2020
ISSN	16807316
起始页码	11181
结束页码	11199
卷号	20 期号:19
英文摘要	Nitrate, sulfate and ammonium (NSA) are the main secondary inorganic aerosols of PM2:5 and play an important role in air pollution. In this study, a 3-year observational experiment was conducted from 1 January 2015 to 31 December 2017, in Chengdu, southwest China. NSA pollution characteristics, chemical conversion generation, emission reduction control sensitivity and pollutant regional transport characteristics were analyzed. NSA are the most important chemical compositions of particles with aerodynamic equivalent diameter 2:5 m in ambient air (PM2:5), and the contribution of nitrate to the accumulation of PM2:5 concentration is greater than that of sulfate and ammonium. NSA also have obvious characteristics of annual, monthly, seasonal, diurnal and weekly variations. Through observation data and model simulation, it was also found that the existence of an aerosol aqueous environment plays an important role in the formation and existence of NSA. Sensitivity analysis between NSA found that controlling NO3 and SO2 4 plays an important role in reducing the contribution of NSA to PM2:5, which also implies that the current control of NOx and SO2 is important for improving air pollution. Combined with meteorological conditions and potential source contribution function (PSCF) analysis, local emissions and regional emissions of pollutants are found to have important impacts on Chengdu s atmospheric environment. This research result not only provides an assessment of the current atmospheric emission reduction effect but also provides an important reference for atmospheric pollution control. © 2020 EDP Sciences. All rights reserved.
语种	英语
scopus关键词	aerosol; ammonium; atmospheric pollution; chemical composition; concentration (composition); emission control; measurement method; nitrate; particulate matter; pollutant source; pollutant transport; pollution control; sulfate; Chengdu; China; Sichuan
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/152855
作者单位	State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing, 100875, China; Chengdu Academy of Environmental Sciences, Chengdu, 610072, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Beijing Municipal Environmental Monitoring Center, Beijing, 100048, China; Yuncheng Municipal Ecological Environment Bureau, Yuncheng, 044000, China
推荐引用方式 GB/T 7714	Kong L.,Feng M.,Liu Y.,et al. Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM2.5 in Chengdu, southwest China, based on 3-year measurements[J],2020,20(19).
APA	Kong L..,Feng M..,Liu Y..,Zhang Y..,Zhang C..,...&Wang Z..(2020).Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM2.5 in Chengdu, southwest China, based on 3-year measurements.Atmospheric Chemistry and Physics,20(19).
MLA	Kong L.,et al."Elucidating the pollution characteristics of nitrate, sulfate and ammonium in PM2.5 in Chengdu, southwest China, based on 3-year measurements".Atmospheric Chemistry and Physics 20.19(2020).