✦ LIBER ✦

Capillary Electrochromatography with Monolithic Poly(styrene-co-divinylbenzene-co-methacrylic acid) as the Stationary Phase

✍ Scribed by Xiong, Bohui ;Zhang, Lihua ;Zhang, Yukui ;Zou, Hanfa ;Wang, Junde

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 86 KB
Volume: 23
Category: Article
ISSN: 0935-6304
DOI: 10.1002/(sici)1521-4168(20000101)23:1<67::aid-jhrc67>3.0.co;2-l

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✦ Synopsis

A new kind of monolithic capillary electrochromatography column with poly(styrene-co-divinylbenzene-co-methacrylic acid) as the stationary phase has been developed. The stationary phase was found to be porous by scanning electron microscopy and the composition of the continuous bed was proved by IR spectroscopy to be the ternary polymer of styrene, divinylbenzene, and methacrylic acid. The effects of operating parameters, such as voltage, electrolyte, and organic modifier concentration in the mobile phase on electroosmotic flow were studied systematically. The retention mechanism of neutral solutes on such a column proved to be similar to that of reversedphase high performance liquid chromatography. In addition, fast analyses of phenols, chlorobenzenes, anilines, isomeric compounds of phenylenediamine and alkylbenzenes within 4.5 min were achieved.

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