Accumulation and trace measurement of paraquat at kaolin-modified carbon paste electrode

被引：20

作者：

El Mhammedi, M. A. ^{[1
,2
]}

Achak, M. ^{[3
]}

Bakasse, M. ^{[4
]}

Bachirat, R. ^{[5
]}

Chtaini, A. ^{[1
]}

机构：

[1] Univ Sultan Moulay Slimane, Equipe Electrochim & Mat Inorgan, Fac Sci & Tech, BP 523, Beni Mellal, Morocco

[2] Univ Hassan 1Er, Fac Polydisciplinaire, Khouribga, Morocco

[3] Univ Cadi Ayyad, Fac Sci Semlalia, Lab Hydrobiol & Algol, Marrakech, Morocco

[4] Univ Chouaib Doukkali, Fac Sci, Equipe Anal Micropolluants Organ, El Jadida, Morocco

[5] Agence Bassin Hydraul Oum Er Rbia, Beni Mellal, Morocco

来源：

MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS | 2010年 / 30卷 / 06期

关键词：

Paraquat; Kaolin; Square wave voltammetry; Carbon paste electrode; ELECTROCHEMICAL-BEHAVIOR; LIQUID-CHROMATOGRAPHY; METHYL VIOLOGEN; WATER; DIQUAT; MATRIX;

D O I：

10.1016/j.msec.2010.03.019

中图分类号：

TB3 [工程材料学]; R318.08 [生物材料学];

学科分类号：

0805 ; 080501 ; 080502 ;

摘要：

The carbon paste electrode modified by kaolin (KCPE) has been utilized for the determination of pesticides with high sensitivity based on their redox behavior. The experiment is performed on the use of cyclic and square wave voltammetry. Experimental conditions were optimized by varying the accumulation time, kaolin loading and measuring solution pH. Square wave voltammetric response showed a linear calibration curve in the range from 3.9x10(-9) to 9x10(-5) mol L-1 with a detection limit of 2x10(-10) mol L-1 at kaolin-modified carbon paste electrode. As a result, it was found that there was feasibility in the use of kaolin to improve the carbon paste electrode properties. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：833 / 838

页数：6

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