Seasonal and spatial distribution of metals in surface sediment of an urban estuary

被引：50

作者：

Buggy, Conor J. ^{[1
]}

Tobin, John M. ^{[1
]}

机构：

[1] Dublin City Univ, Sch Biotechnol, Dublin 9, Ireland

来源：

ENVIRONMENTAL POLLUTION | 2008年 / 155卷 / 02期

关键词：

estuary; sediment; seasonality; metals; polarography;

D O I：

10.1016/j.envpol.2007.11.032

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Aquatic pollution by metals is of concern because of various toxic effects to marine life. The Tolka Estuary, Co. Dublin, Ireland, is a typical Irish urban estuary. It has a significant metal loading originating from the urban environment. Results of a 25 month analysis of cadmium, copper, lead and zinc spatial and temporal distribution over 10 sample locations in this estuary are presented in this paper. Metal concentrations were analysed using differential pulse polarography. Significant seasonal and spatial trends in metal distribution were observed over the 25 months. Sediment metal concentrations gradually increased (30-120%) in spring to a maximum at the end of summer which was followed by a decrease in winter months (30-60%). Sediment organic matter (OM) concentrations exhibited similar seasonal trends and a positive correlation between OM and metal distributions was observed, implying OM had an influence on metal distributions over time. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：308 / 319

页数：12

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