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Polyethyleneimine-coated capillary electrophoresis capillaries for the analysis of organic acids with an application to beverages

โœ Scribed by M. Said Nutku; F. Bedia Erim

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
65 KB
Volume
11
Category
Article
ISSN
1040-7685

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โœฆ Synopsis

The determination of the organic acids, tartaric, malic, citric, lactic, succinic, and acetic, by capillary electrophoresis was investigated. The acids were ลฝ . separated on a polyethyleneimine PEI -coated capillary filled with 20 mM 6aminohexanoic acid and 5 mM 2,4-dihydroxybenzoic acid and adjusted to pH 4.9. The anodic electroosmotic flow generated by the PEI coating favors the separation speed of organic acids. The method was applied to the determination of organic acids in white wine and fruit juices.

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