海河流域沉积物重金属形态分布特征及生态风险评估

李生清

Speciation and distribution of heavy metals in sediments in Haihe River Basin and their effects on ecological risk assessment

LI Sheng-Qing

表4 实验流域沉积物40 cm深度处样品重金属含量测定结果

Table 4 Results of determination of heavy metal content in samples at 40 cm of sediment in the experimental watershed

采样点编号 重金属元素含量/10-6 铬 镉 砷 铅 汞 ① 77.2 0.56 106.3 112.3 0.15 ② 66.7 0.82 89.6 103.7 0.28 ③ 43.8 1.08 92.5 122.4 0.33 ④ 58.3 0.66 117.3 159.5 0.34 ⑤ 99.5 0.89 159.7 114.3 0.29 平均值 69.1 0.80 113.1 122.4 0.28 背景值[12] 44 0.6 70 48 0.30