Element | Maximum level/mg/kg (FAO/WHO CODEX Alimentarius) | Rice variety | |||
Suwadel (White) | Kaluheenati (Brown) | Pachchaperuman (Brown) | Madathawalu (Brown) | ||
As | 0.2 | 0.085 ± 0.02 | 0.13 ± 0.10 | 0.12 ± 0.05 | 0.07 |
Cd | 0.4 | 0.14 ± 0.08 | 0.07 ± 0.01 | ND < 0.06 | ND < 0.06 |
Pb | 0.2 | ND < 0.07 | 3.47 | ND < 0.07 | ND < 0.07 |
Hg | 0.1 | ND < 0.05 | ND < 0.05 | ND < 0.05 | ND < 0.05 |
Cr | - | ND < 0.07 | 0.11 | ND < 0.07 | 0.37 + 0.37 |
Ni | - | ND < 0.08 | ND < 0.08 | ND < 0.08 | ND < 0.08 |
Zn | - | 15.51 ± 3.72 | 18.91 ± 4.96 | 17.39 ± 3.40 | 18.05 ± 3.90 |
Fe | - | 6.28 ± 5.87 | 10.93 ± 7.88 | 14.89 ± 9.99 | 9.91 ± 5.24 |
Se | 0.3 | 0.11 ± 0.05 | 0.15 ± 0.12 | ND < 0.09 | 0.09 ± 0.01 |
Cu | - | 2.28 ± 0.51 | 3.00 ± 1.28 | 2.45 ± 0.36 | 2.31 ± 0.29 |
Mn | - | 16.37 ± 5.29 | 21.10 ± 4.90 | 24.01 ± 3.02 | 22.35 ± 4.81 |
Mo | - | 0.69 ± 0.18 | 0.82 ± 0.33 | 0.54 ± 0.34 | 0.48 ± 0.04 |
Co | - | 0.11 | 0.07 ± 0.01 | 0.09 ± 0.03 | 0.08 ± 0.02 |