Simultaneous determination of dopamine, uric acid, and tryptophan using an MWCNT modified carbon paste electrode by square wave voltammetry

被引：27

作者：

Beitollahi, Hadi ^{[1
]}

Mohadesi, Alireza ^{[2
]}

Khalilizadeh Mahani, Saeedeh ^{[2
]}

Karimi-Maleh, Hassan ^{[3
]}

Akbari, Ali ^{[4
]}

机构：

[1] Int Ctr Sci High Technol & Environm Sci, Res Inst Environm Sci, Dept Environm, Kerman, Iran

[2] Payame Noor Univ, Dept Chem, Tehran 193954697, Iran

[3] Islamic Azad Univ, Sci & Res Branch, Dept Chem, Mazandaran, Iran

[4] Univ Jiroft, Dept Chem, Jiroft, Iran

来源：

TURKISH JOURNAL OF CHEMISTRY | 2012年 / 36卷 / 04期

关键词：

Dopamine; uric acid; tryptophan; carbon nanotube paste electrode; modified electrode; FOLIC-ACID; ELECTROCHEMICAL DETERMINATION; ELECTROCATALYTIC OXIDATION; NANOTUBE; SENSOR; ELECTROANALYSIS; ELECTROPHORESIS; NOREPINEPHRINE; EPINEPHRINE;

D O I：

10.3906/kim-1112-5

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A highly sensitive method was investigated for the simultaneous determination of dopamine (DA), uric acid (UA), and tryptophan (TRP) using a multiwall carbon nanotubes/5-amino-3',4'-dimethoxy-biphenyl-2-ol modified carbon paste electrode (5ADMBCNPE). The 5ADMBCNPE displayed excellent electrochemical catalytic activities towards the oxidation of DA, UA, and TRP. The electrochemical profile of the proposed modified electrode was analyzed by cyclic voltammetry (CV), which showed a shift in the oxidation peak potential of DA at 160 mV to a less positive value compared with an unmodified carbon paste electrode. Square wave voltammetry (SWV) in 0.1 M phosphate buffer solution (PBS) at pH 7.0 was performed to determine DA in the range from 1.2 to 800.0 mu M, with a detection limit of 0.16 mu M. The present method was applied to the determination of DA in some real samples.

引用

页码：526 / 536

页数：11

共 40 条

[1]

Anik Ü, 2008, TURK J CHEM, V32, P711

[2]

[Anonymous], 2001, ELECTROCHEMICAL METH

[3]

ARDAKANI MM, 2011, TURK J CHEM, V35, P573, DOI DOI 10.3906/KIM-1007-784

[4] Electrochemical behavior of isoproterenol in the presence of uric acid and folic acid at a carbon paste electrode modified with 2,7-bis(ferrocenyl ethyl)fluoren-9-one and carbon nanotubes [J].

Beitollahi, Hadi ;

Raoof, Jahan-Bakhsh ;

Karimi-Maleh, Hassan ;

Hosseinzadeh, Rahman .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2012, 16 (04) :1701-1707

[5] Novel nanostructure-based electrochemical sensor for simultaneous determination of dopamine and acetaminophen [J].

Beitollahi, Hadi ;

Sheikhshoaie, Iran .

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, 2012, 32 (02) :375-380

[6] Electrocatalytic and simultaneous determination of isoproterenol, uric acid and folic acid at molybdenum (VI) complex-carbon nanotube paste electrode [J].

Beitollahi, Hadi ;

Sheikhshoaie, Iran .

ELECTROCHIMICA ACTA, 2011, 56 (27) :10259-10263

[7] Selective voltammetric determination of norepinephrine in the presence of acetaminophen and folic acid at a modified carbon nanotube paste electrode [J].

Beitollahi, Hadi ;

Sheikhshoaie, Iran .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2011, 661 (02) :336-342

[8] Electroanalysis and Simultaneous Determination of 6-Thioguanine in the Presence of Uric Acid and Folic Acid Using a Modified Carbon Nanotube Paste Electrode [J].

Beitollahi, Hadi ;

Raoof, Jahan-Bakhsh ;

Hosseinzadeh, Rahman .

ANALYTICAL SCIENCES, 2011, 27 (10) :991-997

[9] Fabrication of a nanostructure-based electrochemical sensor for simultaneous determination of N-acetylcysteine and acetaminophen [J].

Beitollahi, Hadi ;

Raoof, Jahan-Bakhsh ;

Hosseinzadeh, Rahman .

TALANTA, 2011, 85 (04) :2128-2134

[10] Application of a Carbon-Paste Electrode Modified with 2,7-Bis(ferrocenyl ethyl)fluoren-9-one and Carbon Nanotubes for Voltammetric Determination of Levodopa in the Presence of Uric Acid and Folic Acid [J].

Beitollahi, Hadi ;

Raoof, Jahan-Bakhsh ;

Hosseinzadeh, Rahman .

ELECTROANALYSIS, 2011, 23 (08) :1934-1940

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