元素 | 清洁(%) | 轻微污(%) | 轻度污染(%) | 中度污染(%) | 重度污(%) |
As | 52.8 | 47.0 | 1.9 | / | / |
Cd | 63.3 | 33.7 | 2.1 | 0.8 | 0.2 |
Cr | 44.1 | 55.9 | / | / | / |
Cu | 60.0 | 38.9 | 0.8 | 0.2 | 0.1 |
Hg | 64.4 | 32.0 | 2.5 | 1.0 | 0.1 |
Ni | 48.6 | 51.4 | / | / | / |
Pb | 49.9 | 50.0 | 0.1 | / | / |
Zn | 54.8 | 44.9 | 0.2 | 0.1 | / |
综合级别 | 1.4 | 86.0 | 9.6 | 2.5 | 0.5 |