| Hg | As | Cd | Pb |
A1 | 0.014 | 0.499 | 0.092 | 0.035 |
A2 | 0.017 | 0.496 | 0.091 | 0.033 |
A3 | 0.020 | 0.551 | 0.106 | 0.022 |
A4 | 0.019 | 1.00 | 0.092 | 0.19 |
B1 | 0.018 | 0.617 | 0.075 | 0.019 |
B2 | 0.020 | 0.569 | 0.052 | 0.010 |
B3 | 0.021 | 0.65 | 0.027 | 0.047 |
B4 | 0.017 | 0.78 | 0.022 | 0.033 |
CK | 0.013 | 0.152 | 0.440 | 0.042 |