Atmospheric mercury monitoring survey in Beijing, China

被引:142
作者
Liu, SL
Nadim, F
Perkins, C
Carley, RJ
Hoag, GE
Lin, YH
Chen, LT
机构
[1] Univ Connecticut, Environm Res Inst, Storrs, CT 06269 USA
[2] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China
关键词
atmospheric mercury; Beijing; China; rural; urban;
D O I
10.1016/S0045-6535(02)00026-7
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
With the aid of one industrial, two urban, two suburban, and two rural sampling locations, diurnal patterns of total gaseous mercury (TGM) were monitored in January, February and September of 1998 in Beijing, China. Monitoring was conducted in six (two urban, two suburban, one rural and the industrial sites) of the seven sampling sites during January and February (winter) and in four (two urban, one rural, and the industrial sites) of the sampling locations during September (summer) of 1998. In the three suburban sampling stations, mean TGM concentrations during the winter sampling period were 8.6, 10.7, and 6.2 ng/m(3), respectively. In the two urban sampling locations mean TGM concentrations during winter and summer sampling periods were 24.7, 8.3, 10, and 12.7 ng/m(3), respectively. In the suburban-industrial and the two rural sampling locations, mean mercury concentrations ranged from 3.1-5.3 ng/m(3) in winter to 4.1-7.7 ng/m(3) in summer sampling periods. In the Tiananmen Square (urban), and Shijingshan (suburban) sampling locations the mean TGM concentrations during the summer sampling period were higher than winter concentrations, which may have been caused by evaporation of soil-bound mercury in warm periods. Continuous meteorological data were available at one of the suburban sites, which allowed the observation of mercury concentration variations associated with some weather parameters. It was found that there was a moderate negative correlation between the wind speed and the TGM concentration at this suburban sampling location. It was also found that during the sampling period at the same site, the quantity of TGM transported to or from the sampling site was mainly influenced by the duration and frequency of wind occurrence from certain directions. (C) 2002 Elsevier Science Ltd. All rights reserved.
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页码:97 / 107
页数:11
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