| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 612528 | Journal of Colloid and Interface Science | 2007 | 6 Pages |
Abstract
The sorption of bromophenol blue or anthracene-9-carboxylic acid as a weak acid into single octadecylsilyl (ODS)-silica gel microparticles in a solution was analyzed by microcapillary injection-manipulation and absorption microspectroscopy. The distribution ratio and the sorption rate were highly dependent on the pH of the solution. These results are discussed in terms of the acid dissociation/association, distribution between the ODS and solution phases, and intraparticle diffusion of the weak acid in the nanometer-sized pores of the ODS-silica gel.
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Related Topics
Physical Sciences and Engineering
Chemical Engineering
Colloid and Surface Chemistry
Authors
Hiroshi Kakizaki, Chiaki Aonuma, Kiyoharu Nakatani,