| 元素 | 基线值(mg/kg) | 背景值(mg/kg) | 异常下限值(mg/kg) | 
| As | 7.48 | 7.01 | 9.23 | 
| Cd | 0.19 | 0.15 | 0.23 | 
| Cr | 82.06 | 77.50 | 98.77 | 
| Cu | 33.03 | 30.90 | 36.82 | 
| Hg | 0.18 | 0.16 | 0.23 | 
| Ni | 35.18 | 32.40 | 45.12 | 
| Pb | 31.27 | 30.30 | 35.82 | 
| Zn | 94.54 | 92.70 | 106.68 |