Determination of the stability constants of uranyl/polymer complexes by differential pulse polarography

被引：18

作者：

Leroy, D ^{[1
]}

Martinot, L ^{[1
]}

Jérôme, C ^{[1
]}

Jérôme, R ^{[1
]}

机构：

[1] Univ Liege, Ctr Educ & Res Macromol, B-4000 Liege, Belgium

来源：

POLYMER | 2001年 / 42卷 / 10期

关键词：

uranyl; stability constants; differential pulse polarography;

D O I：

10.1016/S0032-3861(00)00858-2

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Differential pulse polarography (DPP) allows for the determination of the stability constants (K) and the stoichiometry (n) for the complexation of the UO22+ ion by various monomers and the parent polymers. The experimental observation is the shift of the totally reversible reduction wave UO22+ + e(-) reversible arrow UO2+ toward more cathodic potentials when the complexing monomer or polymer is added to an uranyl nitrate aqueous solution. This shift is, however, much greater when the polymer is used rather than the monomer, in line with a higher stability of the complexes (K-polymer much greater than K-monomer), A theoretical stability scale of the polymers/UO22+ complexes was compared to an experimental one based on dynamic leaching tests. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：4589 / 4596

页数：8

共 22 条

[1]

BARD AJ, 1980, ELECTROCHEMICAL METH

[2]

CASTLE PM, 1908, Patent No. 4474688

[3]

Crow D.R., 1969, Polarography of Metal Complexes

[4] CHAIN CHARACTERISTICS OF POLY(2-ACRYLAMIDO-2-METHYLPROPANESULFONATE) POLYMERS .2. COMPARISON OF UNPERTURBED DIMENSIONS AND PERSISTENCE LENGTHS [J].

FISHER, LW ;

SOCHOR, AR ;

TAN, JS .

MACROMOLECULES, 1977, 10 (05) :955-959

[5]

FLUCK E, 1984, GMELIN HDB INORGANIC

[6]

Fu J.M., 1989, U.S. Patent, Patent No. 4868248

[7]

Kabanov V. A., 1973, PURE APPL CHEM MACRO, V8, P121

[8] CHELATING ABILITY OF POLY(VINYLAMINE) - EFFECTS OF POLYAMINE STRUCTURE ON CHELATION [J].

KOBAYASHI, S ;

SUH, KD ;

SHIROKURA, Y .

MACROMOLECULES, 1989, 22 (05) :2363-2366

[9] Voltammetric and spectroscopic investigation of binding in complexes of divalent metal ions with styrene maleic acid copolymer and monomeric analogues [J].

Kramer, C ;

Dunsch, L .

ELECTROCHIMICA ACTA, 1998, 44 (05) :819-829

[10] Complexation of uranyl ion by three polyacrylamide type polymers:: Electrochemical preparation and leaching tests investigations [J].

Leroy, D ;

Martinot, L ;

Jérôme, C ;

Jérôme, R .

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 1999, 240 (03) :867-875

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