同济大学学报（自然科学版）2012，Vol.40Issue(12)：1852-1856,5.DOI:10.3969/j.issn.0253-374x.2012.12.019
巢湖市河流表层沉积物重金属污染和风险评价
Heavy Metal Pollution in Surface Sediment of Urban River in Chaohu City and Its Risk Assessment
摘要
Abstract
Nine surface sediments were collected from urban rivers of Chaohu City, China, for an analysis of 7 heavy metals (Hg, Cu, Pb, Zn, Cr, Ni and As). A comprehensive way was conducted to investigate distribution patterns and assess the potential ecological risks of heavy metals. The results indicate that the sediments are severely contaminated by heavy metals and mean concentrations of Hg and As are above PEL values. The contamination order of the 7 metals is Ni, Hg, Cu, As, Cr, Zn, Pb according to the mean Igeo values, while the single potential ecological risk of heavy metals followes the order Hg, As, Cu, Pb, Cr, Ni, Zn. The element Ni was the main pollutant and Hg was the second most abundant element with the most serious ecological risks. More attention was demanded to the metalloid As in ecological risk assessments. The pollution of the remaining 4 metals was slight with little ecological risk. The distribution pattern of Hg individual potential ecological risk indices was similar to that of the general potential ecological risk indices for all metals. More concern should be focused to West Huancheng River suffering serious ecological risk.关键词
城市河道/沉积物/重金属/风险评价Key words
urban river/sediment/heavy metal/risk assessment分类
资源环境引用本文复制引用
李飞鹏,陈玲,张海平,王嘉莹..巢湖市河流表层沉积物重金属污染和风险评价[J].同济大学学报（自然科学版）,2012,40(12):1852-1856,5.基金项目
"十二五"国家科技支撑计划(2012BAJ24B01) （2012BAJ24B01）
