Condition | Results |
---|---|
Recovery%a ± SD | |
Optimum conditionb | 99.76 ± 1.12 |
AgNO3 (2 × 10–2 M) (0.40 mL) | 98.45 ± 0.31 |
AgNO3 (2 × 10–2 M) (0.60 mL) | 100.61 ± 0.67 |
PVP (0.14%) (0.60 mL) | 99.03 ± 1.08 |
PVP (0.14%) (0.80 mL) | 99.56 ± 0.69 |
NaOH (5 × 10–3 M) (0.40 mL) | 98.22 ± 1.30 |
NaOH (5 × 10–3 M) (0.60 mL) | 100.34 ± 0.71 |
Heating time (at 90 °C) (13 min) | 98.13 ± 0.44 |
Heating time (at 90 °C) (17 min) | 100.83 ± 0.96 |