Norkus E, Grinciene G, Vuorinen T, Vaitkus R, Butkus E. Interaction of β-cyclodextrin with cadmium(II) ions.
Int J Biol Macromol 2003;
33:251-4. [PMID:
14607371 DOI:
10.1016/s0141-8130(03)00078-3]
[Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Reduction of Cd(II) on a dropping mercury electrode was used to study interaction of beta-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 degrees C; I=1.0). The calculated value of the diffusion coefficient equal to 1.0x10(-6)cm(2)/s shows a large size Cd(II) complex species formation in alkaline solutions containing beta-CD.
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