Assessment of heavy metal levels in surface sediments of estuaries and adjacent coastal areas in China

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• 作者：Xianbin Liu ; Deliang Li ; Guisheng Song
• 关键词：Changjiang River Estuary ; Yellow River Estuary ; Pearl River Estuary ; surface sediment ; heavy metal
• 刊名：Frontiers of Earth Science
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：11
• 期：1
• 页码：85-94
• 全文大小：
• 刊物主题：Earth Sciences, general;
• 出版者：Higher Education Press
• ISSN：2095-0209
• 卷排序：11

文摘

This article investigates the variations of contamination levels of heavy metals such as copper, lead, chromium, cadmium, zinc, arsenic, and mercury over time in surface sediments of the Changjiang River Estuary (CRE), Yellow River Estuary (YRE), Pearl River Estuary (PRE), and their adjacent coastal areas in China. The contamination factor (CF), pollution load index (PLI), and geoaccumulation index (I_geo) are used to evaluate the quality of the surface sediments in the study areas. The results showed that the CRE, YRE, and their adjacent coastal areas were at a low risk of contamination in terms of heavy metals, while the PRE and its adjacent coastal area were at a moderate level. By comparison, the concentrations of heavy metals in the surface sediments of the YRE and its adjacent coastal area were relatively lower than those in the CRE, PRE, and their adjacent coastal areas.