Table 3.
Recovery percentages (% ± SD) for atropine (At) and scopolamine (Sc) obtained in buckwheat (Bu-F1O), sorghum (So-FO) and chickpea (Ch-FC) flours spiked with 0.1 mL of a 1 mg/L standard solution of atropine and scopolamine under different SLE-SPE conditions, using of sulfonic acid-functionalized SBA-15 and commercial materials as SCX-SPE sorbents *.
| Sample | M-SBA-15-SO3− SCX-SPE Sorbent | MFE-PAK® SCX SPE Sorbent | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 mg | 100 mg | 150 mg | 200 mg | 150 mg | 200 mg | ||||||||
| At | Sc | At | Sc | At | Sc | At | Sc | At | Sc | At | Sc | ||
| Bu-F1O | 43 ± 10 | 25 ± 7 | 52 ± 21 | 33± 17 | 87 ± 9 | 70 ± 5 | - | - | 48 ± 6 | 10 ± 3 | 60 ± 16 | 14 ± 5 | |
| So-FO | 66 ± 3 | 48 ± 3 | 82 ± 16 | 85 ± 8 | 98 ± 4 | 95 ± 4 | - | - | 59 ± 8 | 21 ± 1 | 71 ± 11 | 34 ± 2 | |
| Ch-FC | - | - | 60 ± 1 | 27 ± 3 | 93 ± 13 | 41 ± 2 | 92 ± 9 | 72 ± 4 | 39 ± 2 | 17 ± 4 | 48 ± 2 | 20 ± 1 | |
* 1 g of flour was subject to SLE with 8 mL of H2O, 1.1% HCl (pH 1.0). SPE experimental conditions as in Table 2.