Table 3.
Recovery (%) of macrominerals from various food items.
| Metal | Sample weight (g) | Concentrations of standard spiked (mg/L) | Volume of the standard solution spiked (μL) | Spiked concentrationa (mg/100 g) | Mean Recovery concentrationb (mg/100 g) | Mean Percentage recoveryb (%) |
|---|---|---|---|---|---|---|
| K | 1.00 | 1000 | 100 | 10.0 | 10.4 ± 0.7 | 104 ± 7 |
| 1.00 | 1000 | 500 | 50.0 | 47.5 ± 2.3 | 95.0 ± 4.8 | |
| Na | 1.00 | 100 | 100 | 1.00 | 1.1 ± 0.1 | 110 ± 8 |
| 1.00 | 1000 | 100 | 10.0 | 10.0 ± 0.5 | 100 ± 5 | |
| Ca | 1.00 | 1000 | 50 | 5.00 | 5.2 ± 0.2 | 104 ± 4 |
| 1.00 | 1000 | 250 | 25.0 | 24.0 ± 1.1 | 96.0 ± 4.6 | |
| Mg | 1.00 | 1000 | 100 | 10.0 | 9.5 ± 0.4 | 95.0 ± 4.2 |
| 1.00 | 1000 | 400 | 40.0 | 42.4 ± 1.8 | 106 ± 4 |
a
Corresponding to 20.0, 100.0, 200.0, 500.0, 800.0 and 1000.0 μg/100 mL respectively, for 1.0, 5.0, 10.0, 25.0, 40.0 and 50.0 mg/100 g spiked concentration, using a sample weight of 1.0 g and a final volume of 50 mL.
b
Values represent mean ± standard deviation (SD).