Poly-(Alizarin Red S)-Modified Glassy Carbon Electrode for Simultaneous Electrochemical Determination of Levodopa, Homovanillic Acid and Ascorbic Acid

被引：34
|
作者：
Hatefi-Mehrjardi, Abdolhamid [1 ,2 ,3 ]
Ghaemi, Nasrin [2 ,3 ]
Karimi, Mohammad Ali [1 ,2 ,3 ]
Ghasemi, Masoumeh [2 ,3 ]
Islami-Ramchahi, Somaieh [2 ,3 ]
机构：
[1] Payame Noor Univ, Dept Chem, Tehran, Iran
[2] PNU, Dept Chem, Sirjan, Iran
[3] PNU, NNRL, Sirjan, Iran
来源：
ELECTROANALYSIS | 2014年 / 26卷 / 11期
基金：
美国国家科学基金会;
关键词：
Alizarin Red S; Modified glassy carbon electrode; Electrocatalysis; Levodopa; Homovanillic acid; Ascorbic acid; Simultaneous determination; URIC-ACID; CEREBROSPINAL-FLUID; PARKINSONS-DISEASE; ELECTROCATALYTIC DETERMINATION; PHARMACEUTICAL FORMULATIONS; VOLTAMMETRIC DETERMINATION; PASTE ELECTRODE; HUMAN SERUM; FOLIC-ACID; SENSOR;
D O I：
10.1002/elan.201400302
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A polymeric film of Alizarin Red S was formed on a glassy carbon electrode and used for electrochemical detection of Levodopa (L-DOPA) and homovanillic acid (HVA) in the presence of ascorbic acid (AA). The sensor represented excellent electrocatalytic activity for their oxidations. The resultant differential pulse voltammograms show well defined and fully resolved anodic oxidation peaks for determination of the analytes. Anodic oxidation currents of L-DOPA, HVA, and AA showed linearity with good correlation coefficient (>0.996), high sensitivity, and low detection limits (6, 17, and 30 nM respectively). The sensor was used for recovery of analytes in human plasma samples.
引用
收藏
页码：2491 / 2500
页数：10
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