Metals | Conc. in sample (mg/100g) | Amount added (ppm) | Conc. in spiked sample (mg/100g) | Recovery (%) | RSD (%) |
K | 123.6 ±2.4 | 61.8 | 184.1 ± 3.5 | 97.8 ± 1.8 | 1.83 |
Mg | 10.2 ± 0.12 | 5.1 | 15.6 ± 0.53 | 105.8 ± 4.2 | 3.97 |
Ca | 9.7 ± 0.19 | 4.85 | 14.1 ± 1.1 | 90.7 ± 2.5 | 2.2 |
Fe | 0.36 ± 0.04 | 0.18 | 0.55 ± 0.06 | 105.6 ± 7.3 | 6.9 |
Zn | 0.23 ± 0.01 | 0.11 | 0.33 ± 0.03 | 90.9 ± 1.2 | 1.3 |
Mn | 0.2 ± 0.013 | 0.1 | 0.29 ± 0.01 | 90 ± 6.7 | 7.4 |
Cu | 0.1 ± 0.005 | 0.05 | 0.147 ± 0.08 | 94 ± 2.9 | 3.1 |
Cr | 0.002 ± 0.0001 | 1.0 | 1.001 ± 0.07 | 99.9 ± 8.2 | 8.2 |
Cd | ND | ND | ND | ND | ND |