Table 3. Theoretical concentration of samples, average amount of compounds recovered after quantification by sulfur for compounds 4, 5, 6, 7, 8, 9 and 10 in μg/m, % compound recovery and purification methods.
| Sample | Theoretical concentration (μg compound/mL) | Average compound recovery μg compound/mL | % compound recovery | Purification method |
|---|---|---|---|---|
| 4a | 97.80 | 28.40± 0.725 | 29.70 | HPLC |
| 4b | 49.41 | 15.22± 0.4650 | 30.80 | HPLC |
| 5a | 135.6 | 115.0 ± 1.991 | 84.80 | HPLC |
| 5b | 41.70 | 37.13± 1.112 | 89.00 | HPLC |
| 6 | 899.4 | 355.0± 3.098 | 39.50 | SPE |
| 7 | 1400 | 50.33± 4.752 | 3.60 | SPE |
| 8 | 250.0 | 189.4 | 75.80 | HPLC |
| 9 | 987.5 | 49.78 | 5.00 | SPE |
| 10 | 1228 | 141.6± 17.36 | 11.50 | SPE |
a and b are different concentrations for each sample.