气候变化领域集成服务门户(CCPortal): Different roles of nitrate and sulfate in air pollution episodes in the North China Plain

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DOI	10.1016/j.atmosenv.2020.117325
	Different roles of nitrate and sulfate in air pollution episodes in the North China Plain
	Wang Y.; Tang G.; Zhao W.; Yang Y.; Wang L.; Liu Z.; Wen T.; Cheng M.; Wang Y.; Wang Y.
发表日期	2020
ISSN	1352-2310
卷号	224
英文摘要	Different chemical substances make different contributions to particles with different diameters. It is important to determine which species play important roles to control air pollution. In this study, the concentrations of water-soluble inorganic ions, elemental carbon, organic carbon and metal elements in PM1 (particulate matter with a diameter less than 1 μm) and PM2.5 (particulate matter with a diameter less than 2.5 μm) in the Shijiazhuang suburban area were measured by synchronous sampling for one month in the summer of 2016. The results showed that the chemical components of particulate matter are mainly SO42−, NO3−, NH4+ and organic matter (OM), accounting for 14%, 8%, 11%, and 11%, respectively, in PM1 and 13%, 8%, 10%, and 9%, respectively, in PM2.5. PM1 and PM2.5 have similar sources, including secondary nitrate, secondary sulfate, industrial sources, motor vehicle sources, dust, biomass combustion and coal burning, which contribute 29%, 30%, 10%, 9%, 8%, 8% and 6%, respectively, to PM1 and 29%, 33%, 12%, 13%, 8%, 2%, and 4%, respectively, to PM2.5. Based on the analysis of a typical pollution episode, the concentrations of PM1 and PM2.5 increase synchronously in the explosive growth stage, with nitrate acting as the key chemical component. In the most polluted period, the concentration of PM2.5 continues to increase because of the increase in sulfate, while that of PM1 is almost constant. The results show that the prevention and control of PM1 and PM2.5 should be different in different pollution stages. © 2020 Elsevier Ltd
关键词	Chemical composition PM1 PM2.5 Source apportionment
语种	英语
scopus关键词	Air pollution; Chemical analysis; Coal combustion; Coal dust; Nitrates; Organic carbon; Particles (particulate matter); Sulfur compounds; Air pollution episodes; Chemical compositions; PM2.5; Pollution episodes; Prevention and controls; Source apportionment; Synchronous sampling; Water soluble inorganic ions; Air pollution control; carbon; coal; metal; nitrate; sulfate; atmospheric pollution; biomass; chemical substance; coal combustion; concentration (composition); organic carbon; organic matter; particulate matter; suburban area; air pollution; Article; biomass; burn; China; combustion; dust; exhaust gas; particulate matter; priority journal; suburban area; summer; China; Hebei; North China Plain; Shijiazhuang
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249313
作者单位	State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), 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; WUXI CAS Photonics, Co., Ltd, Wuxi, 214135, China; Weather Modification Office of Hebei Province, Shijiazhuang, 050021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Wang Y.,Tang G.,Zhao W.,et al. Different roles of nitrate and sulfate in air pollution episodes in the North China Plain[J],2020,224.
APA	Wang Y..,Tang G..,Zhao W..,Yang Y..,Wang L..,...&Wang Y..(2020).Different roles of nitrate and sulfate in air pollution episodes in the North China Plain.ATMOSPHERIC ENVIRONMENT,224.
MLA	Wang Y.,et al."Different roles of nitrate and sulfate in air pollution episodes in the North China Plain".ATMOSPHERIC ENVIRONMENT 224(2020).