Table 15.
Technique | Sample (g) |
Volume (mL) |
Time (min) |
Temperature (°C) |
Solvent | Result (ppm) | |
---|---|---|---|---|---|---|---|
1 | MAE | 1 | 40 | 15 | Bp. | Water/Methanol acidified with HCl | 104.4 |
2 | Reflux | 1 | 60 | 60 | Bp. | 1 N HCl | 109.6 |
3 | PHWE | 0.25 | 50 | 50 | 60 | Water | 88.2 |
4 | Reflux | 1 | 60 | 60 | Bp. | 1 N HCl | 87.9 |