title: The effects of molecular collisions between the mobile phase and the solute in gas-solid chromatography.
abstract: In chromatographic processes, molecular collisions between the mobile phase and the solute result in the transfer of kinetic energy. Based on these interactions, the relationship between the gauge pressure of the carrier gas at the column inlet and the partition frequency of the solute is derived; consequently, the relationship between the column temperature and partition frequency can be obtained. These relationships have been experimentally validated. The change in the peak shape described herein has been successfully explained using this relationship: the partition frequency was calculated from the theoretical plate number of a tailing peak. We propose a new mechanism for peak tailing using plate theory, which states that as the number of plates increases, the symmetry of the peak increases.
authors.affiliation: Biochemical Engineering College, Beijing Union University, Beijing, China.
authors.forename: Dali
authors.initials: D
authors.lastname: Zhang
authors.affiliation: Institute of Process Engineering, Chinese Academy of Science, Beijing, China.
authors.forename: Jiajun
authors.initials: J
authors.lastname: Ke
authors.affiliation: Institute of Process Engineering, Chinese Academy of Science, Beijing, China.
authors.forename: Lizhu
authors.initials: L
authors.lastname: Lu
mesh_terms: D002849:Chromatography, Gas / Q000379:methods*; D004735:Energy Transfer; D006838:Hydrocarbons / Q000737:chemistry; D016011:Normal Distribution; D012996:Solutions / Q000737:chemistry; D013696:Temperature
chemical_list: D006838:Hydrocarbons; D012996:Solutions
keywords: Energy transfer; Flow velocity effect; Molecular collisions; Peak tailing; Plate theory