Violation of the linearity principle of additivity of sorption energy in chromatography. A universal equation describing retention behavior

✍ Scribed by Golovnya, R. V. ;Grigoryeva, D. N.

• Publisher: John Wiley and Sons
• Year: 1986
• Tongue: English
• Weight: 440 KB
• Volume: 9
• Category: Article
• ISSN: 0935-6304
• DOI: 10.1002/jhrc.1240091008

✦ Synopsis

Deviations from the additivity of energy contributions to substance sorption energies, determined on the basis of thermodynamic studies of GC behavior of homologous series of organic compounds fall into two categories: one for n-alkanes, the other for homologous series containing a functional group. A previously derived equation is proposed far homologous series, describing the deviation from the linear dependenceof retention parameters with a propagating homolog n-alkyl chain. The equation permits calculation of retention parameters of homologsstarting from the first member in gas-liquid,gas-solid, and liquid-liquid systems. The results prove its universal applicability.