Electrocatalytic sensor for the determination of chemical oxygen demand using a lead dioxide modified electrode

被引：68

作者：

Ai, SY ^{[1
]}

Gao, MN ^{[1
]}

Yang, Y ^{[1
]}

Li, JQ ^{[1
]}

Jin, LT ^{[1
]}

机构：

[1] E China Normal Univ, Dept Chem, Shanghai 200062, Peoples R China

来源：

ELECTROANALYSIS | 2004年 / 16卷 / 05期

关键词：

chemical oxygen demand (COD); nano-PbO2; electrocatalytic sensor; amperometry;

D O I：

10.1002/elan.200302839

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An amperometric method that makes use of a nano-PbO2 modified electrode as an electrocatalytic sensor for the determination of chemical oxygen demand (COD) is described. The sensor signal was observed as a result of the detection of the oxidation current due to electrocatalytic oxidation of organic compounds in the sample solution. This sensor responded linearly to the CODCr of standard samples in the range of 5 - 3000 ppm and the detection limit was 2.5 ppm. When using the sensor to determine real samples, it displays short analysis time, simplicity and no sample pretreatment. The sensor was stable for over 20 days in real wastewater samples and has successfully been applied to the determination of COD in real wastewater samples.

引用

页码：404 / 409

页数：6

共 31 条

[1] Preparation of fluorine-doped lead dioxide modified electrodes for electroanalytical applications [J].

Ai, SY ;

Gao, MN ;

Zhang, W ;

Sun, ZD ;

Jin, LT .

ELECTROANALYSIS, 2003, 15 (17) :1403-1409

[2] CHEMICAL OXYGEN-DEMAND DETERMINATION IN WELL AND RIVER WATERS BY FLOW-INJECTION ANALYSIS USING A MICROWAVE-OVEN DURING THE OXIDATION STEP [J].

BALCONI, ML ;

BORGARELLO, M ;

FERRAROLI, R ;

REALINI, F .

ANALYTICA CHIMICA ACTA, 1992, 261 (1-2) :295-299

[3]

Bilanovic D, 1997, WATER SA, V23, P301

[4] Highly-dispersed copper microparticles on the active gold substrate as an amperometric sensor for glucose [J].

Casella, IG ;

Gatta, M ;

Guascito, MR ;

Cataldi, TRI .

ANALYTICA CHIMICA ACTA, 1997, 357 (1-2) :63-71

[5] Rapid determination of chemical oxygen demand by a semi-automated method based on microwave sample digestion, chromium(VI) organic solvent extraction and flame atomic absorption spectrometry [J].

Cuesta, A ;

Todolí, JL ;

Mora, J ;

Canals, A .

ANALYTICA CHIMICA ACTA, 1998, 372 (03) :399-409

[6] ELECTROCATALYSIS OF ANODIC OXYGEN-TRANSFER REACTIONS - FE-DOPED BETA-LEAD DIOXIDE ELECTRODEPOSITED ON NOBLE-METALS [J].

FENG, JR ;

JOHNSON, DC .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1990, 137 (02) :507-510

[7] Electrocatalyst for non-enzymatic oxidation of glucose in neutral saline solutions [J].

Gorski, W ;

Kennedy, RT .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1997, 424 (1-2) :43-48

[8]

Greenberg A. E., 1992, STANDARD METHODS EXA

[9] Photocatalytic sensor for the determination of chemical oxygen demand using flow injection analysis [J].

Kim, YC ;

Sasaki, S ;

Yano, K ;

Ikebukuro, K ;

Hashimoto, K ;

Karube, I .

ANALYTICA CHIMICA ACTA, 2001, 432 (01) :59-66

[10] A flow method with photocatalytic oxidation of dissolved organic matter using a solid-phase (TiO2) reactor followed by amperometric detection of consumed oxygen [J].

Kim, YC ;

Sasaki, S ;

Yano, K ;

Ikebukuro, K ;

Hashimoto, K ;

Karube, I .

ANALYTICAL CHEMISTRY, 2002, 74 (15) :3858-3864

← 1 2 3 4 →