| Trace metals | Content in mg/kg MS |
| Arsenic (As) | 16.139 × 10−3 |
| Cadmium (Cd) | 26.562 × 10−3 |
| Chromium (Cr) | 105.052 × 10−3 |
| Mercury (Hg) | 107.749 × 10−3 |
| Nickel (Ni) | 58.623 × 10−3 |
| Lead (Pb) | 0.00 |
| Selenium (Se) | 0.00 |
| Copper (Cu) | 1.020. 611 × 10−3 |
| Zinc (Zn) | 184.448 × 10−3 |