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Heavy metals in surface sediments of the shallow lakes in eastern China: their relations with environmental factors and anthropogenic activities

机译：中国东部浅湖表层沉积物中的重金属：与环境因素和人为活动的关系

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摘要

The aquatic environment is affected by heavy metal pollution. This study was conducted to test the hypothesis that environmental factors and anthropogenic activities influence the distributions and the risks posed by heavy metals in surface sediments in shallow lakes in eastern China, which is an area affected by rapid urbanization, industrialization, and population growth. Total Cd, Cr, Cu, Ni, Pb, Se, and Zn concentrations in sediment samples were determined using inductively coupled plasma optical emission spectrometry. The I (geo) showed that sediments in the lakes were moderately polluted with Cr, Cu, Pb, and Zn, and the EF method showed that Cd and Se were significantly enriched in lakes. The heavy metals were found to pose moderate risks in most of the lakes, except for Gaoyou Lake, Honghu Lake, Poyang Lake, and Weishan Lake. The RI method indicated that very high risks were posed in Dongting Lake and Poyang Lake. Cd was found to pose much higher levels of risk than the other metals. Significant correlations were found between the heavy metal concentrations and the total carbon, nitrogen, phosphorus, and sulfur concentrations. The gross domestic product represented anthropogenic activities well. The gross domestic product of an area and the gross domestic products of primary and secondary industries in an area all had significant relationships with the concentrations of Cu and Pb, indicating that anthropogenic activities have different impacts on pollution with different heavy metals. The gross domestic product index was found to be a driving force behind the pollution of lakes with heavy metals.
机译：水生环境受到重金属污染的影响。本研究旨在验证以下假设：环境因素和人为活动会影响中国东部浅水区（受快速城市化，工业化和人口增长影响的区域）表层沉积物中重金属的分布及其带来的风险。使用感应耦合等离子体发射光谱法测定沉积物样品中的总Cd，Cr，Cu，Ni，Pb，Se和Zn浓度。 I（geo）表明湖泊中的沉积物被Cr，Cu，Pb和Zn中等污染，而EF方法表明湖泊中的Cd和Se明显富集。除高邮湖，洪湖，Po阳湖和微山湖外，大多数湖泊都发现重金属具有中等风险。 RI法表明洞庭湖和Po阳湖的风险很高。发现镉比其他金属具有更高的风险水平。发现重金属浓度与总碳，氮，磷和硫浓度之间存在显着的相关性。国内生产总值很好地代表了人为活动。一个地区的国内生产总值和该地区第一，第二产业的国内生产总值都与铜和铅的浓度有显着关系，这表明人为活动对不同重金属污染的影响不同。人们发现国内生产总值指数是重金属湖泊污染的驱动力。

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