Voltammetric determination of cysteine at a graphite electrode modified with gold nanoparticles

被引：26

作者：

Perevezentseva, D. O. ^{[1
]}

Gorchakov, E. V. ^{[2
]}

机构：

[1] Tomsk Polytech Univ, Dept Gen & Inorgan Chem, Tomsk 634050, Russia

[2] Tomsk Polytech Univ, Innovat Sci Educ Ctr Gold Platinum, Tomsk 634050, Russia

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2012年 / 16卷 / 07期

关键词：

Cyclic voltammetry; Electrocatalysis; Cysteine; Gold nanoparticles; CARBON-PASTE ELECTRODE; SPECTROPHOTOMETRIC DETERMINATION; CYSTINE; OXIDATION; PROTEINS; COMPLEX; URINE; ACID;

D O I：

10.1007/s10008-012-1727-2

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical behaviour of cysteine (Cys) at a graphite electrode modified with gold nanoparticles (G-Au-nano electrode) was studied by cyclic voltammetry. It was found that the graphite electrode-Au nanoparticles show an electrocatalytic activity towards the oxidation of Cys in 0.1 M NaOH. At 0.05 V, there is an "inverse" maximum in the cathodic voltammogram of Cys. Using a G-Au-nano electrode, the dependence of the peak current of the "inverse" maximum on Cys concentration was linear in the range from 1 to 14 pM, and the detection limit was 0.6 pM. The proposed analytical method is simple, rapid and sensitive.

引用

页码：2405 / 2410

页数：6

共 25 条

[1] Determination by liquid chromatography of free and total cysteine in human urine in the form of its S-quinolinium derivative [J].

Bald, ED ;

Glowacki, R ;

Drzewoski, J .

JOURNAL OF CHROMATOGRAPHY A, 2001, 913 (1-2) :319-329

[2]

Brainina H.Z., 1988, ELECTROCHEMISTRY, V13, P678

[3] The Electrochemistry of Gold: I The Redox Behaviour of the Metal in Aqueous Media [J].

Burke, L. ;

Nugent, P. .

GOLD BULLETIN, 1997, 30 (02) :43-53

[4]

Burke L.D., 1986, MODERN ASPECTS ELECT, V18, P169, DOI DOI 10.1007/978-1-4613-1791-3_4

[5] The electrochemistry of gold: II the electrocatalytic behaviour of the metal in aqueous media [J].

Burke, LD ;

Nugent, PF .

GOLD BULLETIN, 1998, 31 (02) :39-50

[6] SPECTROPHOTOMETRIC DETERMINATION OF CYSTEINE AND CYSTINE IN PEPTIDES AND PROTEINS [J].

CHRASTIL, J .

ANALYST, 1989, 114 (09) :1133-1136

[7] SPECTROPHOTOMETRIC DETERMINATION OF CYSTEINE AND CYSTINE IN URINE [J].

CHRASTIL, J .

ANALYST, 1990, 115 (10) :1383-1384

[8] Cathodic Behaviour of Cysteine at a Platinum Electrode [J].

Fatima Barroso, M. ;

Santos, Teresa ;

Sales, M. Goreti F. ;

Delerue-Matos, Cristina ;

Vaz, M. Carmo V. F. .

PORTUGALIAE ELECTROCHIMICA ACTA, 2007, 25 (01) :119-129

[9] OXIDATION OF CYSTEINE, CYSTEINESULFINIC ACID AND CYSTEIC ACID ON A POLYCRYSTALLINE GOLD ELECTRODE [J].

FAWCETT, WR ;

FEDURCO, M ;

KOVACOVA, Z ;

BORKOWSKA, Z .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1994, 368 (1-2) :265-274

[10] VOLTAMMETRIC REACTION OF THE SULFIDE DISULFIDE SYSTEM WITH OXYGEN AT MERCURY-ELECTRODES [J].

FEDURCO, M ;

VESELA, V ;

HEYROVSKY, M .

ELECTROANALYSIS, 1993, 5 (03) :257-259

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