Sample | Concentration in ppm | |||
| Hg | Pb | As | Cd |
BS1 | 4.53 ± 0.21 | 5.80 ± 2.19 | 2.14 ± 0.98 | ND |
BS2 | 3.87 ± 0.85 | 5.48 ± 2.51 | 1.95 ± 0.67 | ND |
BS3 | 3.93 ± 0.36 | 8.93 ± 2.92 | 1.82 | ND |
BS4 | 2.96 ± 0.50 | 5.21 ± 1.54 | 0.78 ± 0.42 | ND |