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Analysis of sorption into single ODS-silica gel microparticles in acetonitrile-water.

Authors
  • Nakatani, Kiyoharu
  • Kakizaki, Hiroshi
Type
Published Article
Journal
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
Publication Date
Aug 01, 2003
Volume
19
Issue
8
Pages
1211–1213
Identifiers
PMID: 12945681
Source
Medline
License
Unknown

Abstract

Intraparticle mass transfer processes of Phenol Blue (PB) in single octadecylsilyl (ODS)-silica gel microparticles in acetonitrile-water were analyzed by microcapillary manipulation and microabsorption methods. An absorption maximum of PB, the sorption isotherm parameters, and the sorption rate in the microparticle system were highly dependent on the percentage of acetonitrile in solution. The results are discussed in terms of the microscopic polarity surrounding PB in the ODS phase and the relationship between the isotherm parameters and the sorption rate.

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