| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1206917 | Journal of Chromatography A | 2009 | 7 Pages |
Abstract
With the successful implementation of poly(4-vinylpyridine)-grafted silica prepared by grafting-from approach (GF-VPn) as a stationary phase for the separation of polycyclic aromatic hydrocarbons (PAHs) in normal-phase HPLC, this paper describes the chromatographic retention behaviors of PAHs with GF-VPn in reversed-phase HPLC. Significantly higher retention factor along with enhanced shape selectivity were observed with GF-VPn. Thermodynamic study on the retention behaviors of PAHs with GF-VPn in normal-phase and reversed-phase HPLC revealed that retention of PAHs was exothermic in both phases. Furthermore, higher entropic contribution was observed in reversed-phase HPLC compared to normal-phase HPLC.
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Physical Sciences and Engineering
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Analytical Chemistry
Authors
Usha Ghimire Gautam, Mani Prasad Gautam, Tsuyoshi Sawada, Makoto Takafuji, Hirotaka Ihara,