Potential atmospheric transport pathways for mercury measured in the Canadian high arctic

被引：30
|
作者：
Cheng, MD
Schroeder, WH
机构：
[1] Oak Ridge Natl Lab, Div Environm Sci, Oak Ridge, TN 37831 USA
[2] Atmospher Environm Serv, Toronto, ON M3H 5T4, Canada
来源：
JOURNAL OF ATMOSPHERIC CHEMISTRY | 2000年 / 35卷 / 01期
关键词：
arctic mercury; atmospheric transport; sources; + receptor models;
D O I：
10.1023/A:1006259625983
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Large-scale transport pathways for atmospheric gaseous mercury emitted from surrounding source regions to reach the Alert sampling site located at the Northwest Territories of Canada between August 1992 and August 1993 were investigated. The 12-month atmospheric mercury data set comprises blank-corrected total gaseous mercury (TGM) concentrations collected on gold-coated sand traps during one-week long sampling intervals. For TGM concentrations above the 12-month mean TGM level, the analysis reveals regions in Eastern Europe (close to East Germany and Poland), areas on Northeastern America in Canada (Northwest Territories), and central Siberia of the former U.S.S.R. Identification of the physical locations of the emission sources was limited by the temporal resolution of weekly averaged data; however, major atmospheric pathways of mercury transport to the Arctic were successfully resolved. The objective of this note is to demonstrate that the potential source contribution function could be applied to resolve the sources and recover transport pathways of atmospheric mercury over a large scale.
引用
收藏
页码：101 / 107
页数：7
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