Effect of Chamber Gas Phase on Mobile Phase pH and on Separation Efficiency in TLC. A New Mode of Chromatography |
| |
| Authors: | V. G. Berezkin E. G. Sumina S. N. Shtykov V. Z. Atayan D. A. Zagniboroda G. A. Nekhoroshev |
| |
| Affiliation: | (1) A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect, 29, Moscow, 119991, Russia;(2) Department of Chemistry, Saratov State University, Astrakhanskaya St. 83, Saratov, 410012, Russia |
| |
| Abstract: | A new variant of thin-layer chromatography (TLC), based on a gradual change of mobile phase acidity during elution, is proposed. The pH change occurs in the mobile phase moving along the TLC plate as a result of its contact with an acidic or a basic gas phase that replaces the initial mobile phase vapor in the TLC chamber. The potential of this approach has been demonstrated by using carbon dioxide and ammonia gases to improve the resolution of benzoic acids and aromatic amines on polyamide TLC plates. |
| |
| Keywords: | Thin-layer chromatography Polyamide Mobile phase Acidity Effect of the gas phase Benzoic acids, aromatic amines |
| 本文献已被 SpringerLink 等数据库收录！ |
|
