Historical pollution trends in a disturbed, estuarine sedimentary environment, SW Sweden

被引：18

作者：

Brack, K ^{[1
]}

Stevens, RL ^{[1
]}

机构：

[1] Univ Gothenburg, Ctr Earth Sci, S-40530 Gothenburg, Sweden

来源：

ENVIRONMENTAL GEOLOGY | 2001年 / 40卷 / 08期

关键词：

estuary; heavy metal; mercury; pollution trends; Sweden;

D O I：

10.1007/s002540100294

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The objective of this article is to determine whether pollution trends can be reconstructed from sediments in the outer Gota alv estuary. Detailed interpretation of heavy metal profiles in the recent sediment,in combination with profiles of Pb-210- and Cs-137-activity, organic carbon content and grain size distribution, allows estimation of historical trends. This is based on the assumption that only certain intervals, which can be identified, are disturbed. The sediment data area compared with archive data on historical trends in emissions of heavy metals. Special attention is given to mercury, which shows high enrichment over long periods of time. It is found that the most polluted sediments were deposited between 1930 and 1980, but that episodic discharges have also occurred more recently Nevertheless, the effects of remediation since the 1970s are apparent.

引用

页码：1017 / 1029

页数：13

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