Mercury in Arctic air: The long-term trend

被引:23
作者
Li, Chunsheng [1 ,2 ]
Cornett, Jack [1 ,2 ]
Willie, Scott [3 ]
Lam, Joseph [3 ]
机构
[1] Hlth Canada, Radiat Protect Bur, Ottawa, ON K1A 1C1, Canada
[2] Trent Univ, Environm & Resources Studies Program, Peterborough, ON K9J 7B8, Canada
[3] Natl Res Council Canada, Inst Natl Measurement Stand, Ottawa, ON K1A 0R6, Canada
关键词
Mercury; Particulate mercury; Time trend; Arctic; Air pollution; ATMOSPHERIC MERCURY; ENVIRONMENT; DEPOSITION; GREENLAND; CANADA; ALERT; GEM;
D O I
10.1016/j.scitotenv.2008.12.010
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The long-term (1974-2000) time trend of total filterable mercury (TFM) in the air in the Canadian Arctic is reported. The concentration of TFM had declined by (3.0 +/- 0.8)% and (3.1 +/- 0.9)% per year in the summer and fall, respectively, over the 27 years, which coincided with the calculated reduction rate of world-wide mercury emission (similar to 3.3% per year) from human activities between 1983 and 1995. The time trend for winter and early spring was not statistically significant as the variability of TFM was very large, partly due to Arctic Mercury Depletion Events and partly due to Arctic haze. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:2756 / 2759
页数:4
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