Concentrations and gas-particle partitioning of atmospheric reactive mercury at an urban site in Beijing, China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	Concentrations and gas-particle partitioning of atmospheric reactive mercury at an urban site in Beijing, China
	Zhang, Huan ; Wang, Zhangwei ; Wang, Chunjie ; Zhang, Xiaoshan
刊名	ENVIRONMENTAL POLLUTION
	2019-06
卷号	249 页码:13-23
关键词	Atmospheric reactive mercury Gas-particle partitioning Urban air pollution
ISSN号	0269-7491
英文摘要	Measurements of speciated atmospheric mercury play a key role in identifying mercury behavior in the atmosphere. In this study, we measured speciated atmospheric mercury, including gaseous elemental mercury (GEM), reactive gaseous mercury (RGM), and particulate bound mercury (PBM) (<2.5 mu m), in 2015 and 2016 at an urban site in Beijing, China. The mean concentrations of GEM, RGM, and PBM were 4.70 +/- 3.53 ng m(-3), 18.47 +/- 22.27 pg m(-3), and 85.18 +/- 95.34 pg m(-3), respectively. The concentration of PM2.5 significantly affected the distribution of reactive mercury between the gaseous and particulate phases. With the raising of PM2.5 levels, PBM concentrations increased, on the contrary, the concentrations of RGM decreased gradually. The mean concentration of PBM during air-pollution events was more than three times that during clear days. During days with air pollution, the relative humidity significantly affected the gas-particle partitioning of reactive mercury. The linear relationships between gas-particle partitioning coefficient and meteorological factors (air temperature and relative humidity) were obtained over the four seasons. The data also showed that the gas-particle partitioning coefficient of reactive mercury was related to particle composition (e.g., Cl-, BC). The data present in this paper suggested the influence of anthropogenic emissions on reactive mercury in Beijing urban. And the findings will contribute to understand the gas-particle partitioning of reactive mercury and its influencing factors with complex urban pollution. (C) 2019 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43132]
专题	生态环境研究中心_大气环境科学实验室
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Huan,Wang, Zhangwei,Wang, Chunjie,et al. Concentrations and gas-particle partitioning of atmospheric reactive mercury at an urban site in Beijing, China[J]. ENVIRONMENTAL POLLUTION,2019,249:13-23.
APA	Zhang, Huan,Wang, Zhangwei,Wang, Chunjie,&Zhang, Xiaoshan.(2019).Concentrations and gas-particle partitioning of atmospheric reactive mercury at an urban site in Beijing, China.ENVIRONMENTAL POLLUTION,249,13-23.
MLA	Zhang, Huan,et al."Concentrations and gas-particle partitioning of atmospheric reactive mercury at an urban site in Beijing, China".ENVIRONMENTAL POLLUTION 249(2019):13-23.