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Abstract
The aluminium complexes of acetic acid (ACT) have been studied using Potentiometric titrations under physiological conditions of temperature (37°C) and ionic strength (0.15 dm−3 dm−3 NaCI) and at different ligand to metal ratios. The variations of pH were measured with the help of a glass electrode calibrated daily in hydrogen ion concentrations. Results obtained within the pH range of 2.6–4.2 were analysed to determine stability constants using the SUPERQUAD program. Different complex combinations were considered during the calculation procedure, and evidence was found for ML2 mononuclear species beside binuclear hydroxo-complexes M2L(OH)2 and M2L(OH)3 and metal ion hydroxides. Speciation calculations based on the corresponding constants were then used to simulate species distributions.
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