REGIONAL PATTERNS OF WET MERCURY DEPOSITION

被引：53
|
作者：
SORENSEN, JA
GLASS, GE
SCHMIDT, KW
机构：
[1] US EPA,ENVIRONM RES LAB,DULUTH,MN 55804
[2] UNIV MINNESOTA,COLL SCI & ENGN,DULUTH,MN 55812
来源：
ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1994年 / 28卷 / 12期
关键词：
D O I：
10.1021/es00061a010
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Most of the mercury contamination in lakes and streams of nonindustrialized regions of the United States, and Canada is derived from atmospheric deposition In order to determine the regional patterns of these inputs, seven mercury-in-precipitation monitoring sites were established in Minnesota, North Dakota, and Michigan. A 3-year study showed that the magnitude of mercury deposition was dominated by the quantity of precipitation. Regional variations of mercury concentrations in precipitation;were mostly explained by precipitation rate with higher concentrations occurring in the summer. Statewide (Minnesota) annual mercury emission estimates exceeded depositions for 1990, 1991, and 1992 by a factor of approximately 2 and indicated long-range transport of mercury. Significant correlations were observed between concentrations of mercury and other ions in precipitation.
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收藏
页码：2025 / 2032
页数：8
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