柳江流域沉积物重金属生态风险评价及来源分析

钟晓宇, 吴天生, 李杰, 郑国东, 卓小雄, 关东超, 王磊, 莫斌吉

Ecological risk assessment and source analysis of heavy metals in sediments of Liujiang River Catchment

Xiao-Yu ZHONG, Tian-Sheng WU, Jie LI, Guo-Dong ZHEN, Xiao-Xiong ZHUO, Dong-Chao GUAN, Lei WANG, Bing-Ji MO

表4 柳江流域沉积物元素参数统计

Table 4 Contents of heavy metals in sediments of Liujiang Rriver Catchment

参数 As Cd Cr Cu Hg Ni Pb Zn Mn P S Al2O3 Fe2O3 CaO Corg 最小值 2.2 0.06 23.4 6.6 0.016 8.5 6.3 19.1 75.4 154 92 3.55 1.45 0.07 0.15 平均值 17.6 1.04 53.7 21.6 0.12 22.5 32.7 112 688 422 262 9.79 3.77 0.58 0.68 最大值 45.8 6.86 89.1 52 0.474 38.9 169 503 1275 2173 2129 17.1 6.59 3.94 2.5 变异系数 0.49 0.91 0.26 0.39 0.61 0.34 0.8 0.69 0.42 0.5 0.83 0.34 0.27 0.97 0.63