包头南郊农田土壤环境质量特征及农作物健康风险评价

包凤琴, 成杭新, 永胜, 周立军, 杨宇亮

Environmental quality characteristics of soil and health risk assessment of crops of farmlands in the southern suburb of Baotou

Bao Feng-Qin, Cheng Hang-Xin, Yong Sheng, Zhou Li-Jun, Yang Yu-Liang

表4 包头南郊土壤镉、铅和锌特征值及环境质量等级划分

Table 4 Characteristic values of cadmium, lead and zinc in soil and classification of environmental quality in the southern suburbs of Baotou

元素 特征值 环境地球化学质量等级划分 最大值/ 10-6 最小值/ 10-6 平均值/ 10-6 清洁 轻微污染 轻度污染 中度污染 重度污染 样品数 比例/% 样品数 比例/% 样品数 比例/% 样品数 比例/% 样品数 比例/% Cd 2.1 0.1 0.4 570 86.2 73 11.0 17 2.57 1 0.15 Pb 889.0 15.6 146.0 470 71.1 146 22.1 35 5.30 9 1.36 1 0.15 Zn 1516.0 46.7 312.0 407 61.6 173 26.2 65 9.83 15 2.27 1 0.15