Regularities in the retention of nonsubstituted polynuclear aromatic hydrocarbons in liquid chromatography on polar adsorbents |
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Authors: | A Ya Gorbachevskii A V Kiselev Yu S Nikitin A A Pyatygin |
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Institution: | (1) Laboratory of Adsorption and Chromatography, Department of Chemistry, M. V. Lomonosov State University of Moscow, 119899 Moscow, USSR |
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Abstract: | Summary The retention of polynuclear aromatic hydrocarbons (PAH) is studied in liquid chromatography, using columns packed with silica
gel with a hydroxylated surface and the same silica gel with surface-bonded amine and nitrile groups. A linear relationship
was found between retention and the number of π-electrons in the molecule, the size of the molecule and the different types
of carbon atoms in the molecule. The different carbon atoms in a PAH molecule contribute differently to the retention and
this contribution depends on the nature of the polar functional groups on the adsorbent's surface and on the nature and concentration
of a polar modifier present in a non-polar eluent. |
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Keywords: | Liquid chromatography Polyaromatic hydrocarbons Polar stationary phase Relationship between retention and molecular structure |
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