Gaseous elemental mercury concentration in atmosphere at urban and remote sites in 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

	Gaseous elemental mercury concentration in atmosphere at urban and remote sites in China
	Wang Zhang-wei; Chen Zuo-shuai; Duan Ning; Zhang Xiao-shan
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2007
卷号	19 期号:2 页码:176-180
关键词	gaseous elemental mercury urban/remote sites monitoring
英文摘要	An investigation of gaseous elemental mercury concentration in atmosphere was conducted at Beijing and Guangzhou urban, Yangtze Delta regional sites and China Global Atmosphere Watch Baseline Observatory (CGAWBO) in Mt. Waliguan of remote continental area of China. High temporal resolved data were obtained using automated mercury analyzer RA-915(+). Results showed that the overall hourly mean Hg(0) concentrations in Mt. Waliguan were 1.7 +/- 1.1 ng/m(3) in summer and 0.6 0.08 ng/m(3) in winter. The concentration in Yangtze Delta regional site was 5.4 +/- 4.1 ng/m(3), which was much higher than those in Waliguan continental background area and also higher than that found in North America and Europe rural areas. In Beijing urban area the overall hourly mean Hg(0) concentrations were 8.3 +/- 3.6 ng/m(3) in winter, 6.5 +/- 5.2 ng/m(3) in spring, 4.9 +/- 3.3 ng/m(3) in summer, and 6.7 +/- 3.5 ng/m3 in autumn, respectively, and the concentration was 13.5 +/- 7.1 ng/m3 in Guangzhou site. The mean concentration reached the lowest value at 14:00 and the highest at 02:00 or 20:00 in all monitoring campaigns in Beijing and Guangzhou urban areas, which contrasted with the results measured in Yangtze Delta regional site and Mt. Waliguan. The features of concentration and diurnal variation of Hg(0) in Beijing and Guangzhou implied the importance of local anthropogenic sources in contributing to the high Hg(0) concentration in urban areas of China. Contrary seasonal variation patterns of Hg(0) concentration were found between urban and remote sites. In Beijing the highest Hg(0) concentration was in winter and the lowest in summer, while in Mt. Waliguan the Hg(0) concentration in summer was higher than that in winter. These indicated that different processes and factors controlled Hg(0) concentration in urban, regional and remote areas.
WOS记录号	WOS:000244137800008
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/22405]
专题	生态环境研究中心_大气环境科学实验室
推荐引用方式 GB/T 7714	Wang Zhang-wei,Chen Zuo-shuai,Duan Ning,et al. Gaseous elemental mercury concentration in atmosphere at urban and remote sites in China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2007,19(2):176-180.
APA	Wang Zhang-wei,Chen Zuo-shuai,Duan Ning,&Zhang Xiao-shan.(2007).Gaseous elemental mercury concentration in atmosphere at urban and remote sites in China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,19(2),176-180.
MLA	Wang Zhang-wei,et al."Gaseous elemental mercury concentration in atmosphere at urban and remote sites in China".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 19.2(2007):176-180.