| Sample | Item | Pb | Cd | Zn | Cu | Fe | Hg |
| Rice grain | Max | 58.00 | 4.15 | 42.69 | 27.20 | 300.75 | Trace |
| Min | 1.00 | 0.30 | 8.34 | Trace | 62.25 | Trace | |
| Mean | 19.50 | 2.02 | 23.61 | 27.20 | 188.01 | Trace | |
| SD | 19.91 | 1.05 | 12.42 | 0.00 | 82.62 | Trace | |
| Permissible limits | 0.2 | 0.4 | 60 | 10 | 48 | 0.004 |