Method | Conc. level | % Recovery ± RSDa | |
---|---|---|---|
μg mL−1 | Intra-day precision | Inter-day precision | |
Method A | 0.5 | 100.65 ± 1.84 | 101.46 ± 1.89 |
1.0 | 101.61 ± 1.43 | 100.95 ± 1.73 | |
1.5 | 100.57 ± 1.25 | 99.82 ± 1.48 | |
Method B | 1.0 | 100.38 ± 1.63 | 100.72 ± 1.64 |
4.0 | 101.75 ± 1.19 | 100.76 ± 1.41 | |
6.0 | 100.11 ± 1.28 | 99.94 ± 1.01 | |
Method C | 0.4 | 98.11 ± 1.35 | 99.20 ± 1.40 |
0.8 | 100.41 ± 1.66 | 100.03 ± 1.14 | |
1.2 | 100.62 ± 0.78 | 99.80 ± 1.35 | |
Method D | 2.0 | 101.45 ± 1.00 | 100.11 ± 1.68 |
6.0 | 99.35 ± 1.42 | 98.11 ± 1.26 | |
10.0 | 99.26 ± 1.14 | 99.33 ± 1.85 |