Sample | Concentration in ppm | |||
| Hg | Pb | As | Cd |
CS1 | 2.83 ± 0.36 | 2.40 ± 0.65 | ND | ND |
CS2 | 4.02 | 2.44 ± 0.1 | ND | ND |
CS3 | 5.88 | 2.53 ± 0.49 | ND | ND |
CS4 | 2.24 | 1.84 ± 0.36 | ND | ND |