engleski

Electrochemical characterization of cadmium-binding properties of metallothionein

A voltammetric study on the binding properties of the metallothionein (MT) for cadmium ions was performed. The capacity of metallothionein to complex cadmium and the stability constants of cadmium-thionein complex have been determined from the direct titration of MR with cadmium ions in model seawater medium at pH 7.9. At this pH the formation of the Cd-T complex has been followed measuring the specific anodic signal height of the complex. The apparent concentration stability constants of Cd-T complex, K =(7.6+/-0.2)x108 dm3 mol-1, in 0.59 M NaCl, pH=7.9, 250C, have been evaluated from the experimental data using three different procedures.

cadmium; electrochemistry

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