Poly(maleic acid) Modified Carbon Paste Electrode for Simultaneous Detection of Dopamine in the Presence of Uric Acid : A Cyclic Voltammetric Study

被引：0

作者：

Manjunatha, Jamballi G. ^{[1
]}

Swamy, Bahaddurghatta E. Kumara ^{[1
]}

Mamatha, Ganjeenahalli P. ^{[2
]}

Gilbert, Ongera ^{[1
]}

Sherigara, Bailure S. ^{[1
]}

机构：

[1] Kuvempu Univ, Dept PG Studies & Res Ind Chem, Shankaraghatta, Karnataka, India

[2] Kuvempu Univ, Dept Pharmaceut Chem, Shankaraghatta, Karnataka, India

来源：

ANALYTICAL & BIOANALYTICAL ELECTROCHEMISTRY | 2011年 / 3卷 / 02期

关键词：

Poly(maleic acid); Dopamine; Uric Acid; Electropolymerisation; Cyclic Voltammetry;

D O I：

暂无

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A voltammetric method using a poly(maleic acid) modified carbon paste electrode was developed for the quantification of dopamine. The modified electrode exhibited stable and sensitive current responses towards dopamine and potassium ferrocyanide. Compared with a bare CPE, the modified electrode exhibits a remarkable shift of the oxidation potentials of dopamine in the cathodic direction and a drastic enhancement of the anodic current response. The separation between anodic and cathodic peak potentials for dopamine is 0.84 V in 0.2 M phosphate buffer solution (PBS) at pH 7.0 at modified carbon paste electrodes. The poly (maleic acid) CPE was also effective to simultaneously determine dopamine and uric acid in a mixture and resolved the overlapping anodic peaks of these two species into two well-defined voltammetric peaks in cyclic voltammetry. The proposed method showed excellent stability and reproducibility.

引用

页码：146 / 159

页数：14

共 26 条

[1] Amperometric low-potential detection of malic acid using single-wall carbon nanotubes based electrodes [J].

Arvinte, Adina ;

Rotariu, Lucian ;

Bala, Camelia .

SENSORS, 2008, 8 (03) :1497-1507

[2] Simultaneous detection of dopamine and ascorbic acid using polyglycine modified carbon paste electrode: A cyclic voltammetric study [J].

Gilbert, Ongera ;

Swamy, B. E. Kumara ;

Chandra, Umesh ;

Sherigara, B. S. .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2009, 636 (1-2) :80-85

[3] Architecture and method of fabrication PDMS system for uric acid determination [J].

Grabowska, I. ;

Stadnik, D. ;

Chudy, M. ;

Dybko, A. ;

Brzozka, Z. .

SENSORS AND ACTUATORS B-CHEMICAL, 2007, 121 (02) :445-451

[4] Uric acid determination in a miniaturized flow system with dual optical detection [J].

Grabowska, Ilona ;

Chudy, Michal ;

Dybko, Artur ;

Brzozka, Zbigniew .

SENSORS AND ACTUATORS B-CHEMICAL, 2008, 130 (01) :508-513

[5] Simultaneous measurement of epinephrine and ascorbic acid at the carbon nanotube electrode [J].

Hu, CG ;

Wang, WL ;

Liao, KJ ;

Wang, YT .

SCIENCE AND TECHNOLOGY OF NANOMATERIALS - ICMAT 2003, 2005, 23 :305-308

[6] Electrocatalytic oxidation and simultaneous determination of uric acid and ascorbic acid on the gold nanoparticles-modified glassy carbon electrode [J].

Hu, Guangzhi ;

Ma, Yonggen ;

Guo, Yong ;

Shao, Shijun .

ELECTROCHIMICA ACTA, 2008, 53 (22) :6610-6615

[7] Simultaneous determination of doparnine, ascorbic acid and uric acid at poly (Evans Blue) modified glassy carbon electrode [J].

Lin, Liqing ;

Chen, Jinghua ;

Yao, Hong ;

Chen, Yuanzhong ;

Zheng, Yanjie ;

Lin, Xinhua .

BIOELECTROCHEMISTRY, 2008, 73 (01) :11-17

[8] Electrocatalytic oxidation and determination of dopamine in the presence of ascorbic acid and uric acid at a poly (p-nitrobenzenazo resorcinol) modified glassy carbon electrode [J].

Lin, Xinhua ;

Zhang, Yafeng ;

Chen, Wei ;

Wu, Ping .

SENSORS AND ACTUATORS B-CHEMICAL, 2007, 122 (01) :309-314

[9]

Manjunatha JG, 2010, INT J ELECTROCHEM SC, V5, P682

[10]

Manjunatha JG, 2009, INT J ELECTROCHEM SC, V4, P1706

← 1 2 3 →