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| retention
time tR (min) |
||||||
|---|---|---|---|---|---|---|
| method | 3 | 1 | 4 | 2 | 5 | 6 |
| I | 5.2 | 13.1 | 16.1 | 18.4 | 18.6 | 25.2 |
| II | 5.2 | 13.2 | 16.3 | 18.5 | 18.7 | 25.2 |
| III | 1.4 | 6.6 | 8.4 | 9.6 | 9.8 | 12.5 |
| IV | 0.6 | 4.3 | 5.2 | 5.7 | 5.8 | 7.2 |
| V | 0.5 | 3.8 | 4.5 | 4.9 | 5.1 | 6.1 |
