Mercury accumulation rates and spatial patterns in lake sediments from west Greenland: A coast to ice margin transect

被引:110
作者
Bindler, R [1 ]
Renberg, I
Appleby, PG
Anderson, NJ
Rose, NL
机构
[1] Umea Univ, Dept Ecol & Environm Sci, SE-90187 Umea, Sweden
[2] Univ Liverpool, Environm Radioactiv Res Ctr, Liverpool L69 3BX, Merseyside, England
[3] Univ Copenhagen, Dept Geog, DK-1350 Copenhagen K, Denmark
[4] UCL, Environm Change Res Ctr, London WC1H 0AP, England
关键词
D O I
10.1021/es0002868
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The Arctic is recognized as an important focus for long-range transport of contaminants, such as mercury(Hg), from industrial regions at lower latitudes. in addition to large geographic gaps, there a re few long-term retrospective time trends in arctic research, besides the Greenland ice record, to assess the onset of atmospheric pollution as well as to establish the rates of change in the terrestrial environment. In a study of sediments from 21 lakes along a 150 km transect from the coast to the ice sheet margin in the Sondre Stromfjord (Kangerlussuaq) region, we p resent stratigraphic evidence for elevated Hg inputs to this ice-free region on Greenland's west coast. Nineteen study lakes showed Hg concentration enrichments (HgEF(conc)) in surface compared to deeper sediments, with a mean HgEF(conc) of 3. Higher HgEF(conc) are found in lakes closest to the ice margin. The existence of this Hg gradient is supported by pollution Hg inventories in three (210)Pb-dated cores. While (210)Pb inventories and Ph pollution are higher at the coast, pollution Hg inventories are nearly 3-fold higher at the ice margin (570 mug m(-2)) than at the coast (210 mug m(-2)). These dated cores also indicate an onset of Hg pollution in the region beginning at least by the late 19th century but possibly as early as the 17th century.
引用
收藏
页码:1736 / 1741
页数:6
相关论文
共 35 条
[1]  
AARKROG A, 1997, AMAP GREENLAND 1994
[2]  
*AMAP, 1997, ARCT POLL ISS STAT A
[3]  
ANDERSON S, 1999, GEOL GREENLAND SURV, V183, P68
[4]  
[Anonymous], 1998, AMAP ASS REP ARCT PO
[5]  
Appleby P. G., 1978, CATENA, V5, P1, DOI [DOI 10.1016/S0341-8162(78)80002-2, DOI 10.1016/S0341-8162]
[6]  
Appleby P.G., 1998, Dating of Sediments and Determination of Sedimentation Rate, P7
[7]  
APPLEBY PG, 1986, HYDROBIOLOGIA, V141, P21
[8]  
BINDLER R, IN PRESS WATER AIR S
[9]  
BINDLER R, IN PRESS J ATMOS ENV
[10]   Accumulation of persistent organochlorine compounds in mountains of western Canada [J].
Blais, JM ;
Schindler, DW ;
Muir, DCG ;
Kimpe, LE ;
Donald, DB ;
Rosenberg, B .
NATURE, 1998, 395 (6702) :585-588