元素 | 最小值/ | 最大值/ | 平均值/ | 标准差/ | 变异系数 | 甘肃土壤背景值/ |
(mg∙kg−1) | (mg∙kg−1) | (mg∙kg−1) | (mg∙kg−1) | (mg∙kg−1) | ||
Cu | 1.48 | 16.11 | 3.70 | 2.66 | 0.719 | 26.5 |
Zn | 137.88 | 171.88 | 155.87 | 5.49 | 0.035 | 64.7 |
Ni | 0.00 | 49.09 | 21.88 | 13.33 | 0.609 | 32.8 |
Cr | 26.92 | 37.27 | 32.24 | 2.56 | 0.079 | 93.6 |
Pb | 192.77 | 225.39 | 204.12 | 7.06 | 0.035 | 21.6 |
Hg | 0.00 | 5.77 | 0.22 | 5.28 | 6.069 | 0.078 |
Co | 1.65 | 3.5 | 2.42 | 0.35 | 0.143 | 12.0 |