title: Gas chromatographic separation of substituted pyridines.
abstract: Capillary gas chromatographic methodology for separation of complex mixtures of substituted pyridines has been demonstrated on polar (CAM) and non-polar (DB-5) columns. Separations are characterized by high resolution, high sensitivity, a wide dynamic detector range, and good reproducibility. For the first time, Kováts retention indices have been calculated for pyridine and substituted pyridines. Correlations of retention indices with physico-chemical properties, such as hydrogen bonding, pyridine pKa and Hammett substituent constants are discussed.
mesh_terms: D002614:Chelating Agents / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D011725:Pyridines / Q000302:isolation & purification*; D013696:Temperature
chemical_list: D002614:Chelating Agents; D011725:Pyridines; C023666:pyridine