典型汞矿区周边耕地土壤重金属来源解析与农作物健康风险评价

余飞, 王锐, 周皎, 张风雷, 蒋玉莲, 张云逸, 朱世林

Sources of soil heavy metals and health risk assessment of crops in arable land at the periphery of a typical mercury mining area

YU Fei, WANG Rui, ZHOU Jiao, ZHANG Feng-Lei, JIANG Yu-Lian, ZHANG Yun-Yi, ZHU Shi-Lin

表4 研究区耕地土壤重金属含量特征

Table 4 Concentrations of heavy metals in the farmland soils in the study area

特征参数 As Cd Cr Cu Hg Ni Pb Zn pH 最小值/10-6 4.24 0.28 67.20 20.97 0.15 29.97 29.20 78.97 4.33 最大值/10-6 50.15 4.67 109.00 96.85 38.73 70.85 75.30 219.98 8.22 平均值/10-6 17.92 1.12 88.86 45.13 3.31 43.52 45.39 127.07 6.10 中值/10-6 16.15 0.92 89.65 42.08 0.78 41.14 43.40 125.70 6.08 变异系数 0.58 0.71 0.12 0.36 2.00 0.23 0.21 0.22 0.16 重庆市土壤背景值[32]/10-6 全国土壤背景值[33]/10-6 6.62 11.20 0.28 0.10 74.4 61.00 24.6 22.60 0.069 0.07 31.6 26.90 28.1 26.00 81.9 74.20 6.70