Table 1.
Metal | Detection limit (ng/L) | Measured value (mg/kg) | Standard value (mg/kg) | Recovery (%) |
---|---|---|---|---|
Cu | 3.20 | 16.6 | 15.9 ± 0.9 | 104 |
Pb | 1.20 | 2.60 | 2.4 ± 0.3 | 108 |
Zn | 2.33 | 56.9 | 52.2 ± 3.2 | 109 |
Cd | 1.20 | 32.3 | 30.5 ± 1.6 | 106 |
Cr | 12.0 | 5.67 | 5.2 ± 0.7 | 109 |
Mn | 33.2 | 256 | 279 ± 14 | 92 |
Ni | 3.20 | 1.55 | 1.4 ± 0.2 | 114 |
Fe | 731 | 363 | 341 ± 27 | 106 |