Table 5 Percentage of recovery
Metals | number of replicates (n) | Concentration un-spiked Samples (µg/g) | The amount added (µg/g) | Concentration in spiked samples (µg/g) | Recovery (%) |
|---|---|---|---|---|---|
Zn | 3 | 1.98 ± 0.05 | 0.2 | 2.14 ± 0.02 | 80%±1 |
Cu | 3 | 1.93 ± 0.04 | 0.2 | 2.15 ± 0.01 | 110%±0.5 |
Mn | 3 | 1.01 ± 0.01 | 0.2 | 1.19 ± 0.04 | 90%±1.26 |
Cd | 3 | 0.025 ± 0.001 | 0.1 | 0.12 ± 0.06 | 95%±2.5 |
Cr | 3 | 0.28 ± 0.03 | 0.1 | 0.36 ± 0.02 | 80%±2 |