Interaction of β-cyclodextrin with cadmium(II) ions

被引：10
|
作者：
Norkus, E
Grinciene, G
Vuorinen, T
Vaitkus, R
Butkus, E
机构：
[1] Inst Chem, Catalysis Lab, LT-2600 Vilnius, Lithuania
[2] Vilnius State Univ, Fac Chem, LT-2006 Vilnius, Lithuania
[3] Vilnius Pedag Univ, LT-2034 Vilnius, Lithuania
[4] Helsinki Univ Technol, Dept Forest Prod Technol, FIN-02150 Espoo, Finland
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2003年 / 33卷 / 4-5期
关键词：
beta-cyclodextrin; cadmium(II); complex formation;
D O I：
10.1016/S0141-8130(03)00078-3
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Reduction of Cd(II) on a dropping mercury electrode was used to study interaction of p-cyclodextrin with Cd(II) ions. It was found that Cd(II) forms Cdbeta-CD(OH)(2)(2-) hydroxy-complex with the anion of beta-cyclodextrin in alkaline solutions (pH > 11), the logarithm of stability constant being 10.4 +/- 0.1 (20 degreesC; I = 1.0). The calculated value of the diffusion coefficient equal to 1.0 x 10(-6) cm(2)/S shows a large size Cd(II) complex species formation in alkaline solutions containing P-CD. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：251 / 254
页数：4
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