The complexes formed in the interaction of the copper(II) ion with glucuronic acid over the pH range 4·0–11·0 were investigated using d.c. polarography, cyclic voltammetry and chronoamperometry. It was found that below about pH 6·1 no complex forms, while in the pH range of approximately 6·2–7·4 and again 7·5–9·8 stable complexes were formed in solution. At high pH values, the complexes appear to break up. The complex formed in the pH range 6·2–7·4 was studied and stability constants determined by two different methods.
Volume 134, 2022
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