| Cr | Ni | Cu | Zn | As | Cd | Pb |
Range | 0.48 - 2.25 | 1.19 - 3.60 | 6.75 - 13.2 | 64 - 112 | 0.22 - 0.60 | 0.03 - 0.09 | 0.18 - 2.25 |
Mean ± SD | 1.01 ± 0.73 | 2.5 ± 0.81 | 11.1 ± 2.27 | 95.3 ± 16.6 | 0.42 ± 0.14 | 0.06 ± 0.02 | 0.87 ± 0.73 |