Square Wave Voltammetric Determination of Trace Amounts of Europium(III) at Montmorillonite-Modified Carbon Paste Electrodes
2004 ◽
Vol 69
(8)
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pp. 1590-1599
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Keyword(s):
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 × 10-7 to 2.0 × 10-5 mol l-1. The detection limit is estimated to be 4 × 10-8 mol l-1 (S/N = 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.
1997 ◽
Vol 342
(2-3)
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pp. 175-180
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2005 ◽
Vol 70
(3)
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pp. 292-304
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2009 ◽
Vol 161
(1)
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pp. 55-61
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1999 ◽
Vol 20
(4)
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pp. 621-630
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2009 ◽
Vol 68
(1)
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pp. 27-32
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2019 ◽
Vol 8
(3)
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pp. 149-164
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Keyword(s):
2008 ◽
Vol 110
(4)
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pp. 1001-1006
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