Sensitive Voltammetric Determination of Natural Flavonoid Quercetin in a Disposable Graphite Lead

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F15%3A39900257" target="_blank" >RIV/00216275:25310/15:39900257 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.17113/ftb.53.04.15.4176" target="_blank" >http://dx.doi.org/10.17113/ftb.53.04.15.4176</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17113/ftb.53.04.15.4176" target="_blank" >10.17113/ftb.53.04.15.4176</a>

Result language
angličtina
Original language name
Sensitive Voltammetric Determination of Natural Flavonoid Quercetin in a Disposable Graphite Lead
Original language description
In this paper, a pencil graphite electrode was pretreated using chronoamperometry technique in phosphate buffer solution (pH=7.0) for sensitive determination of quercetin. Oxidation of quercetin was investigated using pretreated pencil graphite electrodeand anodic stripping differential pulse voltammetry. Under optimal conditions, the anodic current of quercetin exhibited linear response to its concentration in the range from 0.001 to 1.5 ?mol/L with the limit of detection of 0.3.10-3 ?mol/L. The proposed method was successfully applied for the determination of quercetin in cranberry and black currant juices with recovery rate from 93.2 to 94.7 %. Solid-phase extraction was found to be necessary prior to voltammetric determination of quercetin in fruit juice samples using pretreated pencil graphite electrode.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CG - Electrochemistry
OECD FORD branch
—

Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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