Distribution of DDT in sediments off the central California coast

被引：12
|
作者：
Hartwell, SI [1 ]
机构：
[1] NOAA, NOS, NCCOS, Ctr Coastal Monitoring & Assessment, Silver Spring, MD 20910 USA
来源：
MARINE POLLUTION BULLETIN | 2004年 / 49卷 / 04期
关键词：
DDT; continental shelves; sediment pollution; central California; pesticides;
D O I：
10.1016/j.marpolbul.2004.02.016
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A collaborative sampling cruise off the central California coast was conducted to evaluate contaminant transport pathways along and across the shelf in the spring of 2002. The area has a complex current structure and net transport routes are not known for sure. Sediment characteristics, and organic and trace metal contaminants were analyzed in sediments taken from locations near shore, out to the heads of several canyons. Relative to the continental shelf and Pioneer Canyon stations, DDT was found at higher concentrations in Ascension and Monterey Canyons. Monterey Bay still receives DDT from terrestrial runoff and may be the source of DDT found in Ascension Canyon. DDT concentrations in Monterey Bay biota indicate bioaccumulation is occurring at depth due to continuing input from the shore. Effects on the deep ocean benthic community is unknown. Published by Elsevier Ltd.
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页码：299 / 305
页数：7
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