| As | Cd | Cr | Co | Cu | Hg | Mo | Ni | Pb | Tl | Zn |
Normal concentration | <60* | <0.67 | <116 | <25.9 | <42.7 | <0.3* | <1.6 | <61.5 | <62.3 | <1.37 | <160.9 |
Low contamination | 60 - 284 | 0.67 - 0.99 | 116 - 200* | 25.9 - 38.1 | 42.7 - 100* | 0.3* - 1.0 | 1.6 - 2.31 | 61.5 - 91.6 | 62.3 - 100* | 1.37 - 1.96 | 160.9 - 231.5 |
High contamination | 284 - 2840 | 0.99 - 9.9 | 200 - 2000 | 38.1 - 381 | 100 - 1000 | 1.0 - 10 | 2.31 - 23.1 | 91.6 - 916 | 100 - 1000 | 1.96 - 20.0 | 231.5 - 2315 |
Very high contamination | >2840 | >9.9 | >2000 | >381 | >1000 | >10.0 | >23.1 | >916 | >1000 | >20.0 | >2315 |