元素 | 样品数 | 平均值(mg/kg) | 标准差 | 中位数(mg/kg) | 范围(mg/kg) | 变异系数 | 峰度 | 偏度 |
Hg | 889 | 0.182 | 0.12 | 0.189 | 0.02~2.76 | 0.66 | 75.07 | 6.9 |
Cd | 889 | 0.356 | 0.217 | 0.344 | 0.099~2.07 | 0.61 | 8.66 | 2.62 |
Pb | 889 | 34.15 | 24.69 | 33.9 | 5.401~224.64 | 0.72 | 8.28 | 2.27 |
Cr | 889 | 50.58 | 18.22 | 49.63 | 8.25~140.27 | 0.36 | 1.34 | 1.13 |
As | 889 | 10.92 | 5.81 | 10.89 | 2.05~70.56 | 0.32 | 7.39 | 2.18 |