Preconcentration and determination of uranyl ions on electrodes modified by tri-n-octylphosphine oxide

Lubert, Karl‐Heinz; Schnurrbusch, M.; Thomas, Asha

doi:10.1016/s0003-2670(01)95525-4

Cited by 63 publications

(21 citation statements)

References 19 publications

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“…The direct mixing of the modifying agent into the carbon paste was suggested by Ravichandran and Baldwin [150], which then led to a wide application of modified carbon paste electrodes (CPE) in electroanalysis, e.g., for the determination of anions with ion exchangers [151,152]. Modification of glassy carbon electrode with a thin film of a suitable complexing agent (trioctylphosphine oxide) enabled the pre-concentration and voltammetric determination of traces of uranium(VI) [153]. Further information on the beginning of chemically modified electrodes in electroanalysis is summarized in early reviews of the subject [154 -157].…”

Section: Polarography [88 -112]mentioning

confidence: 99%

History of Electroanalytical Methods

Lubert

Kalcher

2010

Electroanalysis

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There are many historical reviews on electrochemistry as well as on analytical chemistry, where-as hardly any survey of the history of electroanalytical methods exists. This contribution is an approach to provide a short overview on the development of the electroanalytical methods, electrodes and electrochemical sensors. Electrogravimetry belongs to the oldest quantitative procedures introduced 1864 by Wolcott Gibbs. Roots are even older and are represented by "voltameters". Closely related to electrogravimetry is coulometry, which is also based on Faradays laws; early applications comprise determinations of atomic masses and of thin metal layers. Conductivity measurements are also a rather old analytical method, applied (with direct current) in the 18 th century already. The effective procedure was developed in the 1860s after the use of alternating current by Friedrich Kohlrausch. The Nernst equation (1889) was the base for direct potentiometry, e.g., determination of sparingly soluble electrolytes. Max Cremer is the inventor of the glass electrode (1906), which is the first electrochemical sensor. Potentiometric indication of titrations by Robert Behrend (1883) was the first instrumental indication in volumetric analysis. The invention of polarography by Jaroslav Heyrovský (1922) is the starting point of the electroanalysis with the dropping mercury electrode. The polarograph, developed in cooperation with Masuro Shikata, was the first automated analytical device. As a follow-up various methods (e.g., pulse and alternating current methods) as well as voltammetry including stripping analysis have gained importance. Further development of electroanalysis is characterized by new electrodes and electrode materials, e.g., stationary mercury electrodes, carbon-paste electrodes, chemically modified electrodes, and increased application of electrochemical sensors.

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Section: Polarography [88 -112]mentioning

confidence: 99%

History of Electroanalytical Methods

Lubert

Kalcher

2010

Electroanalysis

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“…The superior selectivity for actinides over heavy and transition metal ions of the Ac-Phos SAMMS greatly improves the selectivity for uranium sensing. Compared to propyl gallate (PG) 1 and trioctylphosphine oxide (TOPO), 18 carbamoyl methyl phosphine oxide (CMPO) is a more notable class of ligands in which a carbonyl amide and a P=O double bond are arranged in a suitable fashion to (a) (b) chelate actinide cations. 11,20 The characteristic of the C=O methyl P=O moiety in the Ac-Phos SAMMS (Fig.…”

Section: Ac-phos-samms For Uranium Detectionmentioning

confidence: 99%

Electrochemical sensors based on functionalized nanoporous silica for environmental monitoring

Lin¹,

Yantasee²,

Fryxell³

et al. 2004

Nanosensing: Materials and Devices

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Nanostructured materials enable the development of miniature sensing devices that are compact, low-cost, low-energyconsumption, and easily integrated into field-deployable units. Recently we have successfully developed electrochemical sensors based on functionalized nanostructured materials for the characterization of metal ions. Specifically, glycinylurea self-assembled monolayer on nanoporous silica (Gly-UR SAMMS) has been incorporated in carbon paste electrodes for the detection of toxic metals such as lead, copper, and mercury based on adsorptive stripping voltammetry, while acetamide phosphonic acid self-assembled monolayer on nanoporous silica (Ac-Phos SAMMS) has been used for the detection of uranium. Both electrochemical sensors yield reproducible measurements with excellent detection limits (at ppb level), are selective for target species, does not require the use of mercury film and chelating agents, and require little or no regeneration of electrode materials. The rigid, open, paralleled pore structure combined with suitable interfacial chemistry of SAMMS also results in fast responses of the electrochemical sensors.

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“…In case of metal ions, this is usually a complex formation or the formation of insoluble precipitates. An early description of a successful application of a surface-modified electrode for the determination of a metal ion was the octylphosphine oxide modified glassy carbon electrode by Lubert et al [12]. It was used for the determination of uranium.…”

Section: Stripping Voltammetrymentioning

confidence: 99%

Advantages and limitations of combining separation techniques with voltammetry

Möller¹,

Scholz

1996

Analytical and Bioanalytical Chemistry

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In this review the combination of voltammetric methods of analysis with separation techniques, such as electrochemical separations, extractive separations, chromatography, electrochromatography, electrophoresis, volatilization and coprecipitation is critically discussed. Based on available publications and their own experience, the authors try to evaluate different separation techniques in view of future developments, paying special attention to extraction methods. For organic analysis, chromatography and electrophoresis with voltammetric detection are considered to be especially attractive while for stripping analysis, major progress is expected to be made in the development of electrodes and electronic equipment. Extraction, coprecipitation and volatilization will be of minor significance.

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Preconcentration and determination of uranyl ions on electrodes modified by tri-n-octylphosphine oxide

Cited by 63 publications

References 19 publications

History of Electroanalytical Methods

History of Electroanalytical Methods

Electrochemical sensors based on functionalized nanoporous silica for environmental monitoring

Advantages and limitations of combining separation techniques with voltammetry

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