Square Wave Voltammetric Determination of Trace Amounts of Europium(III) at Montmorillonite-Modified Carbon Paste Electrodes

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Title:Square Wave Voltammetric Determination of Trace Amounts of Europium(III) at Montmorillonite-Modified Carbon Paste Electrodes
Creators:
Ji, Xiaobo
hu, Shengshui
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 69, 8, pp. 1590-1599
Uncontrolled Keywords:Chemically modified electrodes, Electrochemistry, Montmorillonite, Europium(III), Square wave voltammetry

Abstract

A carbon paste electrode modified with montmorillonite for the determination of Eu(III) was developed. This chemically modified electrode exhibits strong and stable electroactivity for Eu(III). Square wave voltammetry (SWV) of Eu(III) was evaluated with respect to the quantity of modifier, pH of electrolyte solution, accumulation potential and time. The stripping peak currents increase linearly with concentrations of Eu(III) from 1.0 × 10<sup>-7</sup> to 2.0 × 10<sup>-5</sup> mol l<sup>-1</sup>. The detection limit is estimated to be 4 × 10<sup>-8 </sup>mol l<sup>-1</sup> (<i>S</i>/<i>N</i> = 3). The recommended method has been applied to the quantitation of Eu(III) in stream sediment samples; the results obtained by the SWV approach are in good agreement with reference values. <p>

Title:Square Wave Voltammetric Determination of Trace Amounts of Europium(III) at Montmorillonite-Modified Carbon Paste Electrodes
Creators:
Ji, Xiaobo
hu, Shengshui
Uncontrolled Keywords:Chemically modified electrodes, Electrochemistry, Montmorillonite, Europium(III), Square wave voltammetry
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:69
Number:8
Page Range:pp. 1590-1599
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20041590UNSPECIFIED
ID Code:2296
Item Type:Article
Deposited On:06 Feb 2009 17:17
Last Modified:06 Feb 2009 16:17

Citation

Ji, Xiaobo; hu, Shengshui (2004) Square Wave Voltammetric Determination of Trace Amounts of Europium(III) at Montmorillonite-Modified Carbon Paste Electrodes. Collection of Czechoslovak Chemical Communications, 69 (8). pp. 1590-1599. ISSN 0010-0765

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