Voltammetric Determination of Rutin Using a Carbon Composite Electrode Modified with Copper(II)-Resin

被引：15

作者：

Garcia Freitas, Kellen Heloizy ^{[1
]}

Medeiros, Roberta Antigo ^{[1
]}

Fatibello-Filho, Orlando ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Quim, Ctr Ciencias Exatas & Tecnol, BR-13560 Sao Carlos, SP, Brazil

来源：

ANALYTICAL LETTERS | 2009年 / 42卷 / 06期

基金：

巴西圣保罗研究基金会;

关键词：

Copper(II)-resin electrode; pharmaceutical formulations; rutin; voltammetry; ELECTROCHEMICAL OXIDATION; CYCLIC VOLTAMMETRY; STRIPPING VOLTAMMETRY; PASTE ELECTRODES; QUERCETIN; FLAVONOIDS; ANTIOXIDANT; GRAPHITE; COPPER; BEHAVIOR;

D O I：

10.1080/00032710902722087

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The preparation and electrochemical characterization of a carbon composite electrode modified with copper(II)-resin as well as its behavior toward rutin were investigated using cyclic and linear sweep voltammetry. The best voltammetric response was observed for a composite composition of 20% (m/m) copper(II)-resin, 0.10mol L-1 KNO3/10-6 mol L-1 HNO3 solution (pH 6.0) as the supporting electrolyte, and a scan rate of 50mVs-1. A linear voltammetric response for rutin was obtained in the concentration range from 9.9010-7 to 8.0710-6 mol L-1, with a detection limit of 2.6510-8 mol L-1. The proposed electrode was useful for the quality control and routine analysis of rutin in pharmaceutical formulations.

引用

页码：881 / 897

页数：17

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