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首页> 外文期刊>Estuarine Coastal and Shelf Science >Spatial analysis of trace element contamination in sediments of Tamiraparani estuary, southeast coast of India
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Spatial analysis of trace element contamination in sediments of Tamiraparani estuary, southeast coast of India

机译：印度东南沿海塔米拉帕拉尼河口沉积物中微量元素污染的空间分析

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摘要

The impact of industrial effluents on the Tamiraparani estuary was investigated by determining the degree of trace element contamination in the estuarine sediments. Surface samples were taken from 30 locations covering the entire estuary. Grain size and trace element (Ni, Pb, Co, Cu, Zn, Cd, Mn, Fe, Al) variations were analysed, and enrichment factors (EF) as well as geo-accumulation indices (I~(geo)) calcu lated to understand the contamination level of the study area. A geographical information system (CIS) mapping technique was employed to highlight the spatial distribution patterns of trace elements in the estuarine sediments. Vulnerability maps prepared from the I~(geo) values revealed that the estuary is extremely contaminated with Cd and moderately contaminated with Zn and Pb. The sources of these metals are associated with nearby chemical plants and harbour activities. The cumulative effect of anthropogenic activities has led to a serious threat to the whole estuarine environment.
机译：通过确定河口沉积物中微量元素的污染程度，研究了工业废水对塔米拉帕拉尼河口的影响。表面样本取自覆盖整个河口的30个地点。分析了晶粒尺寸和微量元素（Ni，Pb，Co，Cu，Zn，Cd，Mn，Fe，Al）的变化，并计算了富集因子（EF）和地质积累指数（I〜（geo））了解研究区域的污染水平。地理信息系统（CIS）的制图技术被用来突出河口沉积物中微量元素的空间分布格局。根据I〜（geo）值绘制的脆弱性图显示，河口被Cd极度污染，而被Zn和Pb极度污染。这些金属的来源与附近的化工厂和港口活动有关。人为活动的累积影响已对整个河口环境造成了严重威胁。

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