| Cr | Pb | Cd | As | Hg |
K = 1.5,背景值Bn (mg/kg) | 90 | 20 | 0.3 | 13 | 0.35 |
含量均值(30个样品) (mg/kg) | 39.26 | 30.89 | 0.08 | 2.49 | 0.04 |
地积累污染指数Igeo | −1.78 | 0.04 | −2.52 | −2.97 | −3.61 |
污染程度 | 无污染 | 无污染~中污染 | 无污染 | 无污染 | 无污染 |
污染等级 | 0 | 1 | 0 | 0 | 0 |