农业环境科学学报2013，Vol.32Issue(6)：1210-1218,9.DOI:10.11654/jaes.2013.06.018
于桥水库上游支流沉积物重金属含量及生态风险评价
Concentrations and Ecological Risk Assessment of Heavy Metals in Surface Sediments from Tributaries of Yuqiao Reservoir
摘要
Abstract
Yuqiao Reservoir,an important adjusting reservoir in the project of diverting water from the Luanhe River to Tianjin City,is important water resource for Tianjin City.The potential ecological risk of heavy metals were assessed by using Hankanson ecological risk index methods and the sources of heavy metal contamination were estimated with correlation analysis after the sediments samples from three tributaries of Yuqiao reservoir were collected and the concentrations of heavy metals such as cadmium (Cd),lead (Pb),chromium (Cr),copper (Cu),zinc (Zn),manganese (Mn) and nickel (Ni) were analyzed by ICP-MS.The results showed that sediments of three tributaries of Yuqiao reservoir are uncontaminated by Cr,Pb,lightly contaminated by Ni,Cu,Zn,moderately contaminated by Cd.The Hankanson' s ecological risk factor of Cd averagely was 106.78,meaning the highest level ecological risk.The ecological risk of Shahe River in three tributaries was at highest level.The total potential ecological risks of heavy metals in sediments were at low level assessed by potential ecological risk index.The ecological risk of Bahuzhuang sampling site of Shahe River was at medium level ecological risk,the sampling site near Zunhua city was at the intensity level and the Xiliucun sampling site was at high intensity level.There was better correlation between Zn and Cd with correlation analysis.The resource of heavy metals pollutants of three tributaries of Yuqiao Reservoir may be controlled by mining area distribution and riverway shape.关键词
沉积物/重金属污染/生态风险评价/来源/于桥水库Key words
sediments/ heavy metal pollution/ ecological risk assessment/ source/ Yuqiao Reservoir tributaries分类
资源环境引用本文复制引用
胡晓芳,王祖伟,宋晓旭,吕佳芮,陈安冉..于桥水库上游支流沉积物重金属含量及生态风险评价[J].农业环境科学学报,2013,32(6):1210-1218,9.基金项目
国家自然科学基金项目(40973078) （40973078）
