Research Article
Cholesteric Liquid Crystalline Copolymers for Gas Chromatographic Separation of Polycyclic Aromatic Compounds
Table 2
Relative retention times of PAHs with different numbers of rings on the LCP column, their boiling points, and their L/B ratios.
| | Compounds | Temperature | Relative retention time | Boiling point (°C) | L/B |
| | Two rings | 170°C isocratic | | | | | Naphthalene (1) | | 1 | 217.9 | 1.242 | | Biphenyl (2) | | 1.111 | 255.0 | — | | Diphenylmethane (3) | | 1.141 | 264.5 | — | | Three rings | 170°C isocratic | | | | | Acenaphthene (4) | | 1 | 279 | — | | Fluorene (5) | | 1.354 | 295 | 1.399 | | Phenanthrene (6) | | 2.741 | 340 | 1.459 | | Anthracene (7) | | 3.240 | 342 | 1.559 | | Four rings | 220°C isocratic | | | | | Fluoranthene (8) | | 1 | 384 | 1.142 | | Pyrene (9) | | 1.203 | 404 | 1.119 | | Triphenylene (10) | | 3.303 | 425 | 1.12 | | Benz[a]anthracene (11) | | 3.692 | 437.6 | 1.58 | | Chrysene (12) | | 4.287 | 448 | 1.72 | | Five rings | 230°C isocratic | | | | | Benzo[a]pyrene (13) | | 1 | 495 | 1.149 | | Dibenz[a,h]anthracene (14) | | 1.467 | 524 | 1.782 |
|
|
