气候变化领域集成服务门户(CCPortal): Stabilization for the secondary species contribution to PM2.5 in the Pearl River Delta (PRD) over the past decade; China: A meta-analysis

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DOI	10.1016/j.atmosenv.2020.117817
	Stabilization for the secondary species contribution to PM2.5 in the Pearl River Delta (PRD) over the past decade; China: A meta-analysis
	Yan F.; Chen W.; Jia S.; Zhong B.; Yang L.; Mao J.; Chang M.; Shao M.; Yuan B.; Situ S.; Wang X.; Chen D.; Wang X.
发表日期	2020
ISSN	13522310
卷号	242
英文摘要	The fine particulate matter (PM2.5) pollution is one of the atmospheric environmental problems in densely populated areas of China. The secondary species contribution in PM2.5 is extensively studied but the comprehensive analysis on the long-term trend of the secondary species and the main drivers of this trend in the Pearl River Delta (PRD) have not been explored. Therefore, this study aimed to evaluate the long-term temporal variation of PM2.5 and its secondary species contribution in PRD for twenty years from 2000 to 2019. The results of the meta-analysis showed that the annual average concentration of PM2.5 in the PRD was 60.3 ± 16.8 μg/m3 and generally decreased by 3.9 μg/m3 per year from 2004 to 2019. Three significant transitions in secondary species percentage were observed during 2000–2019: first declined in 2000–2005 before rose in 2005–2008 and followed by a stable period in 2008–2019. The percentage of secondary species stabilized at around 80%, of which secondary organic aerosol (SOA) and secondary inorganic aerosol (SIA, including SO42−, NO3−, and NH4+) had identical contributions to PM2.5 over the past decade. SOA was affected by the concentration of total oxidant (OX) and volatile organic compounds (VOCs) emissions. SO42− and SO2 have declined with significant reductions in SO2 emissions. NO3− and NH4+ were positively and negatively correlated with the atmospheric concentration of NO2 and NH3, respectively. In addition to the current efforts on SO2 and NOx controls, further measures are needed to control NH3 and VOCs emissions over a larger area for PRD to effectively improve the air quality. © 2020 Elsevier Ltd
英文关键词	Fine particulate matter; Pearl River Delta (PRD); Pollutant emissions; Secondary species
语种	英语
scopus关键词	Aerosols; Air quality; Ammonia; Nitrogen oxides; River pollution; Volatile organic compounds; Annual average concentration; Atmospheric concentration; Comprehensive analysis; Environmental problems; Fine particulate matter (PM2.5); Secondary inorganic aerosol; Secondary organic aerosols; Temporal variation; Quality control; nitrogen dioxide; oxidizing agent; volatile organic compound; aerosol; atmospheric pollution; concentration (composition); long-term change; meta-analysis; particulate matter; pollutant source; aerosol; air pollutant; air quality; Article; chemical composition; China; controlled study; environmental policy; follow up; industrial area; particulate matter 2.5; population density; priority journal; seasonal variation; secondary organic aerosol; topography; China; Guangdong; Zhujiang Delta; Sia
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/144927
作者单位	Guangdong-Hongkong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Institute for Environmental and Climate Research, Jinan University, Guangzhou, 510632, China; School of Atmospheric Sciences, Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Sun Yat-sen University, Guangzhou, 510275, China; Department of Chemical and Biomolecular Engineering, National University of Singapore117576, Singapore; Foshan Environmental Monitoring Center, Foshan, 528000, China; State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Guangdong Environmental Monitoring Center, Guangzhou, 510308, China
推荐引用方式 GB/T 7714	Yan F.,Chen W.,Jia S.,et al. Stabilization for the secondary species contribution to PM2.5 in the Pearl River Delta (PRD) over the past decade; China: A meta-analysis[J],2020,242.
APA	Yan F..,Chen W..,Jia S..,Zhong B..,Yang L..,...&Wang X..(2020).Stabilization for the secondary species contribution to PM2.5 in the Pearl River Delta (PRD) over the past decade; China: A meta-analysis.Atmospheric Environment,242.
MLA	Yan F.,et al."Stabilization for the secondary species contribution to PM2.5 in the Pearl River Delta (PRD) over the past decade; China: A meta-analysis".Atmospheric Environment 242(2020).