山东省某典型工业城镇土壤重金属污染特征及风险评估

曾蛟, 孔令号, 刘淑亮, 褚宏宪, 赵正鹏, 杨开丽, 郭旭军, 陈亮

Contamination characteristics and risk assessment of soil heavy metals in a typical industrial town in Shandong Province, China

ZENG Jiao, KONG Ling-Hao, LIU Shu-Liang, CHU Hong-Xian, ZHAO Zheng-Peng, YANG Kai-Li, GUO Xu-Jun, CHEN Liang

表9 地累积指数法污染评价

Table 9 Pollution assessment by cumulative index method

元素 地累积指数 范围 地累积指数 均值 不同污染指数分级样点占比/% 无污染 无—中度污染 中度污染 中度—强污染 强度污染 强—极强污染 极强污染 Hg -2.79~2.92 0.38 26.1 55.5 16.6 1.8 0 0 0 Cu -3.87~3.76 -1.02 95.6 3.4 0.4 0.2 0.4 0 0 Ni -2.88~2.50 -0.90 98.4 1.2 0.2 0.2 0 0 0 Zn -2.77~3.60 -0.83 98.6 0.6 0.6 0 0.2 0 0 As -2.78~2.11 -0.45 86.6 13.0 0.2 0.2 0 0 0 Cr -2.27~2.46 -0.82 99.0 0.6 0.2 0.2 0 0 0 Cd -2.63~5.31 -0.49 88.0 9.6 1.2 0.6 0.4 0 0.2 Pb -1.67~3.09 -0.53 94.4 5.0 0.2 0.2 0.2 0 0