Declining metal levels at foundry cove (Hudson river, new york): Response to localized dredging of contaminated sediments

被引：16
|
作者：
Mackie, Joshua A.
Natali, Susan M.
Levinton, Jeffrey S.
Sanudo-Wilhelmy, Sergio A.
机构：
[1] Moss Landing Marine Labs, Moss Landing, CA 95039 USA
[2] SUNY Stony Brook, Dept Ecol & Evolut, Stony Brook, NY 11794 USA
[3] Univ So Calif, Los Angeles, CA 90089 USA
来源：
ENVIRONMENTAL POLLUTION | 2007年 / 149卷 / 02期
基金：
美国国家科学基金会;
关键词：
river pollution; cadmium; metal removal; superfund project; Hudson river;
D O I：
10.1016/j.envpol.2007.01.010
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
This study examines the effectiveness of remediating a well-recognized case of heavy metal pollution at Foundry Cove (FC), Hudson River, New York. This tidal freshwater marsh was polluted with battery-factory wastes (1953-1979) and dredged in 1994-1995. Eight years after remediation, dissolved and particulate metals (Cd, Co, Cu, Pb, Ni, and Ag) were found to be lower than levels in the lower Hudson near New York City. Levels of metals (Co, Ni, Cd) on suspended particles were comparatively high. Concentrations of surface sediment Cd throughout the marsh system remain high, but have decreased both in the dredged and undredged areas: Cd was 2.4-230 mg/kg dw of sediment in 2005 vs. 109-1500 mg/kg in the same area in 1983. The rate of tidal export of Cd from FC has decreased by >300-fold, suggesting that dredging successfully stemmed a major source of Cd to the Hudson River. (c) 2007 Elsevier Ltd. All rights reserved.
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页码：141 / 148
页数：8
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