Chromatographia

, Volume 14, Issue 11, pp 638–640 | Cite as

Regularities in the retention of isomeric aromatic hydrocarbons in liquid chromatography II. Analysis of polymethyl- and monoalkylbenzenes on silanized silica gel

  • A. N. Ageev
  • A. V. Kiselev
  • Ya. I. Yashin
Originals

Summary

The regularities of the retention of polymethyl- and monoalkylbenzenes on a nonpolar adsorbent (silanized silica gel) with a polar eluent (2∶3 isopropanol-water) have been studied. In contrast to the retention of the same compounds on a polar adsorbent (silica gel with hydroxylated surface) and with a nonpolar eluent (hexane) polymethylbenzenes are retained on silanized silica gel for a shorter time than the corresponding monoalkylbenzene isomers. The retention order of tert.-, sec.- and n-butylbenzenes is the reverse of that observed on silica gel having a hydroxylated surface. The retention order of xylenes, trimethyl- and tetramethylbenzenes is also the reverse of their retention order on silica gel having a hydroxylated surface. All the mixtures of the corresponding homologues and isomers have been separated.

Key Words

Liquid chromatography Aromatic hydrocarbons Molecular structure Influence on retention 

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References

  1. [1]
    A. N. Ageev, A. V. Kiselev andYa. I. Yashin, Doklady Akad. Nauk S.S.S.R.249, 337 (1979).Google Scholar
  2. [2]
    A. N. Ageev, A. V. Kiselev andYa. I. Yashin, Chromatographia13, 669 (1980).Google Scholar
  3. [3]
    T. I. Temnikova Kurs Teoretitcheskikh Osnov Organicheskoi Khimii (Theoretical Basis of Organic Chemistry) Khimiya Press, Leningrad 1968.Google Scholar

Copyright information

© Friedr. Vieweg & Sohn Verlagsgesellschaft mbH 1981

Authors and Affiliations

  • A. N. Ageev
    • 1
    • 2
  • A. V. Kiselev
    • 1
    • 2
  • Ya. I. Yashin
    • 1
    • 2
  1. 1.Laboratory of Surface Chemistry, Institute of Physical ChemistryUSSR Academy of SciencesMoscow
  2. 2.Experimental Design Bureau of AutomaticsMoscowUSSR

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