农业环境科学学报2011，Vol.30Issue(1)：161-165,5.
巢湖表层沉积物中重金属的分布及污染评价
Distribution and Environmental Pollution Assessment of Heavy Metals in Surface Sediments of Chaohu Lake, China
摘要
Abstract
There is a close correlation between heavy metals and human health. Heavy metal pollution problems are one of the important research issues for water environment scientists. In present paper, total concentrations of seven heavy metals, including Fe, Cr, Ph, Cu, Co, Zn and Ni were determined in surface sediments from 9 different sites of Chaohu Lake. Total metal concentrations in the surface sediments revealed significant pollution inputs on the whole lake investigated, with a distinct peak in the west area of the lake. Large amount of industrial and urban discharges from Hefei City into the west area of Chaohu Lake were the major sources of heavy metals in lake. The level of pollution attributed to heavy metals was evaluated using enrichment factor and geoaccumulation indexes. Enrichment factors revealed the anthropogenic sources for lead and copper and the total metal content in the sediments has decreased from west area to middle area of the lake. This was also supported by geoaccumulation indexes. The result showed that both methods could make a scientific assessment of contamination level and acquire similar evaluation conclusion. With the high risk of toxic heavy metals on human health, the local government should take effective control measures on metal pollution problem. In addition, sources of heavy metals in sediments were analyzed in the present paper.Correlation analyses indicate that Fe is associated with Co and Cr whereas Zn have a close association with Cu.关键词
巢湖/沉积物/重金属/污染评价Key words
Chaohu Lake/ sediment/ heavy metals/ environmental pollution assessment分类
资源环境引用本文复制引用
郑志侠,潘成荣,丁凡..巢湖表层沉积物中重金属的分布及污染评价[J].农业环境科学学报,2011,30(1):161-165,5.基金项目
国家"水体污染控制与治理"重大专项(2008ZX07103-002-5,2008ZX07103-001-3) （2008ZX07103-002-5,2008ZX07103-001-3）
国家科技部国际科技合作项目(2008DFA91310,2009DFA93030) （2008DFA91310,2009DFA93030）
安徽省优秀青年科技基金项目(08040106832) （08040106832）
