Electrochemical determination of hesperidin using mesoporous SiO₂ modified electrode

Mesoporous SiO₂ was synthesized and used for modification of the surface of a carbon paste electrode (CPE). In pH 8.0 phosphate buffer, an irreversible oxidation peak at 0.38 V is observed for hesperidin. Compared to the unmodified CPE, the modified CPE remarkably increases the oxidation signal of h...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2009-11, Vol.167 (1-2), p.35-39
Main Authors: Sun, Dong, Wang, Fengran, Wu, Kangbing, Chen, Jianwei, Zhou, Yikai
Format: Article
Language:English
Subjects:
Analytical Chemistry
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Electrochemical methods
Exact sciences and technology
Microengineering
Nanochemistry
Nanotechnology
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Summary:Mesoporous SiO₂ was synthesized and used for modification of the surface of a carbon paste electrode (CPE). In pH 8.0 phosphate buffer, an irreversible oxidation peak at 0.38 V is observed for hesperidin. Compared to the unmodified CPE, the modified CPE remarkably increases the oxidation signal of hesperidin. The effects of pH value, amount of mesoporous SiO₂ and accumulation time were examined. As a result, a sensitive and convenient electroanalytical method was developed for hesperidin. Its linear range is from 0.5 to 25 μM, and the limit of detection is 0.25 μM. The method was applied to determine hesperidin in several traditional Chinese medicines.
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-009-0200-0