Determination of rutin in green tea infusions using square-wave voltammetry with a rigid carbon-polyurethane composite electrode
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In: Electroanalysis, Vol. 18, No. 10, 01.05.2006, p. 1028-1034.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Determination of rutin in green tea infusions using square-wave voltammetry with a rigid carbon-polyurethane composite electrode
AU - Malagutti, Andréa R.
AU - Zuin, Vânia G.
AU - Cavalheiro, Éder T.G.
AU - Mazo, Luiz H.
PY - 2006/5/1
Y1 - 2006/5/1
N2 - This paper presents a comparative study on the electrochemical behavior of the flavonoid rutin on a rigid carbon-polyurethane composite electrode and on a glassy carbon electrode. The electrochemical oxidation reaction of rutin was found to be quasireversible and affected by adsorption on the electrode surface. A square-wave voltammetric method was developed for determination of rutin in green tea infusion samples using the RCPE electrode and data treatment by a deconvolution procedure. The detection limit achieved in buffered solutions was 7.1 × 10-9 mol L-1 using the RCPE and 1.7 × 10-8 mol L-1 using the GC electrode the average reproducibility for five determinations being 3.5%.
AB - This paper presents a comparative study on the electrochemical behavior of the flavonoid rutin on a rigid carbon-polyurethane composite electrode and on a glassy carbon electrode. The electrochemical oxidation reaction of rutin was found to be quasireversible and affected by adsorption on the electrode surface. A square-wave voltammetric method was developed for determination of rutin in green tea infusion samples using the RCPE electrode and data treatment by a deconvolution procedure. The detection limit achieved in buffered solutions was 7.1 × 10-9 mol L-1 using the RCPE and 1.7 × 10-8 mol L-1 using the GC electrode the average reproducibility for five determinations being 3.5%.
KW - Composite electrode
KW - Flavonoid
KW - Polyurethane
KW - Rutin
KW - Square-wave voltammetry
KW - Chemistry
UR - http://www.scopus.com/inward/record.url?scp=33744796256&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/6176c83b-dd48-3e7e-9293-c4e844f76c74/
U2 - 10.1002/elan.200603496
DO - 10.1002/elan.200603496
M3 - Journal articles
AN - SCOPUS:33744796256
VL - 18
SP - 1028
EP - 1034
JO - Electroanalysis
JF - Electroanalysis
SN - 1040-0397
IS - 10
ER -