Polymer-supported reagents for the selective complexation of metal ions: an overview

Beauvais, Robert; Alexandratos, Spiro D.

doi:10.1016/s1381-5148(98)00016-9

Cited by 262 publications

(127 citation statements)

References 54 publications

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“…Several researchers have studied the fundamental extraction behavior [6][7][8][9][10][11][12][13][14] and the mutual extractive separation [15][16][17][18][19][20] of trivalent group 13 metal cations using many kinds of extractants. [21][22][23][24][25][26][27][28] In spite of its versatility, multi-stage extraction procedures, disposal of large volumes of organic wastes and expensive treatment are the main problems.…”

Section: Introductionmentioning

confidence: 99%

Separation and Preconcentration of Gallium(III), Indium(III), and Thallium(III) Using New Hydrazone-modified Resin

et al. 2007

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Ga(III), In(III) and Tl(III) ions in the presence of different sulfate salts have been successfully separated using 1-(3,4-dihydroxybenzaldehyde)-2-acetylpyridiniumchloride hydrazone (DAPCH) loaded on Duolite C20 in batch and column modes. The obtained modified resin as well as the metal complexes was characterized by elemental analysis and infrared spectra. The extraction isotherms were determined at different pH values. Ga(III) and In(III) are sorbed from aqueous solution at pH 2.5 -3.0 while Tl(III) is sorbed at 2.0. The stripping of the adsorbed ions can be carried out using different concentrations of HCl as eluent. The saturation sorption capacities of Ga(III), In(III) and Tl(III) were 0.82, 0.96 and 0.44 mmol g -1 , where the preconcentration factors are 150, 150 and 100, respectively. The metal(III):Duolite C20-DAPCH ratio was 1:2 for Tl(III) and 1:1 for In(III) and Ga(III). The loaded resin can be regenerated for at least 50 cycles. The utility of the modified resin was tested in aqueous samples and the results show an RSD value of < 5% reflecting their accuracy and reproducibility.

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Section: Introductionmentioning

confidence: 99%

Separation and Preconcentration of Gallium(III), Indium(III), and Thallium(III) Using New Hydrazone-modified Resin

et al. 2007

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“…1,54 Complexing sorbents destined for noble metal preconcentration are synthesized in different ways: the chemical modification of polymeric and mineral matrices (grafting of functional groups) or the non-covalent immobilization of reagents (ligands) on various supports. 19,[55][56][57][58] Recently, the sorbents prepared by the non-covalent immobilization of organic complex-forming and ion-exchanging reagents on the surface of polymeric supports and silica gels have gained considerable attention. 16,17,[59][60][61][62] Many complexing sorbents with different functional groups have been proposed for the preconcentration of noble metals, mainly with nitrogen-and sulfur-containing groups, including imidazole, pyrazole, pyridine, thiazole, etc.…”

Section: Sorbents and Preconcentration Proceduresmentioning

confidence: 99%

Trends in Sorption Preconcentration Combined with Noble Metal Determination

2007

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Nowadays much attention is being paid to the determination of trace amounts of noble metals in geological, industrial, biological and environmental samples. The most promising techniques, such as inductively coupled plasma atomic emission spectrometry (ICP-AES), inductively coupled plasma mass spectrometry (ICP-MS) and electrothermal atomic absorption spectrometry (ETAAS) are characterized by high sensitivity. However, the accurate determination of trace noble metals has been limited by numerous interferences generated from the presence of matrix elements. To decrease, or eliminate, these interferences, the sorption preconcentration of noble metals is often used prior to their instrumental detection. A great number of hyphenated methods of noble metal determination using sorption preconcentration have been developed. This review describes the basic types of available sorbents, preconcentration procedures and preparations of the sorbent to the subsequent determination of noble metals. The specific features of instrumental techniques and examples of ETAAS, FAAS, ICP-AES, ICP-MS determinations after the sorption preconcentration of noble metals are considered. The references cited here were selected mostly from the period 1996 -2006.

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“…The use of chelating resins for separation and removal metal ions is the method choice due to its highly separation efficiency, high degree of selectivity, high loading capacity [1][2][3]. Chelating resins are widely used for the treatment of radioactive wastes from nuclear power stations [4,5]. The aromatic compound with substituents like -OH, -COOH and -NH 2 with urea and formaldehyde shows selective ion-exchange properties, thermal resistance properties and coordinating properties [6].…”

Section: Introductionmentioning

confidence: 99%

Ion-Exchange Applications of Newly Synthesized of Aminoacetophenone, Biuret, Formaldehyde Derivative as New Chelating Terpolymer Resin

Rashid¹,

Omran²

2017

Asian J. Chem.

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Polymer-supported reagents for the selective complexation of metal ions: an overview

Cited by 262 publications

References 54 publications

Separation and Preconcentration of Gallium(III), Indium(III), and Thallium(III) Using New Hydrazone-modified Resin

Separation and Preconcentration of Gallium(III), Indium(III), and Thallium(III) Using New Hydrazone-modified Resin

Trends in Sorption Preconcentration Combined with Noble Metal Determination

Ion-Exchange Applications of Newly Synthesized of Aminoacetophenone, Biuret, Formaldehyde Derivative as New Chelating Terpolymer Resin

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