Table 3 Mean percentage recoveries (extraction efficiency) of the target analytes from milk samples by the proposed sample preparation procedure
|  | Conc. (µg/mL) | Mean peak area of the extracted sample | Mean peak area of the un-extracted standard | % R | Mean % recovery (extraction efficiency) |
|---|---|---|---|---|---|
IMD | 1 | 52.25 ± 0.77 | 56.86 ± 0.77 | 91.89 | 92.53 |
10 | 1112.06 ± 7.56 | 1205.72 ± 3.97 | 92.23 | ||
50 | 5801.91 ± 3.54 | 6207.39 ± 1.62 | 93.46 | ||
FNM | 1 | 112.74 ± 0.21 | 116.53 ± 0.43 | 96.74 | 96.29 |
10 | 408.45 ± 1.12 | 425.72 ± 3.97 | 95.94 | ||
50 | 1738.73 ± 1.23 | 1805.75 ± 4.71 | 96.29 | ||
SDD | 1 | 228.94 ± 0.28 | 241.67 ± 1.06 | 94.73 | 94.91 |
10 | 1080.89 ± 1.40 | 1137.39 ± 1.13 | 95.03 | ||
50 | 4814.91 ± 2.11 | 5070.05 ± 7.32 | 94.96 |