Abstract
The complex formation equilibria between aluminium(III) ion and ofloxacin in 0.1 mol l −1 ionic medium at 298 K were studied by glass electrode pH-metric and UV spectrophotometric measurements. Within ofloxacin to aluminium mole ratio ranging from 2:1 to 25:1 and in pH interval from 2.5 to 10.5, the obtained experimental results were explained by the formation of the following complexes: Al(Hoflo) (log β 1,1,1=15.93±0.03), Al(oflo) 2 (log β 1,2,0=14.84±0.07), Al(oflo) (log β 1,1,0=10.20±0.04) as well as several other mixed and pure hydrolytic complexes. The structure and mechanism of the formation of the complexes and their possible implications on aluminum toxicity were discussed.
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