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A kinetic study was carried out into the complexation of Ni 2+ with the bidentate ligand pyridine-2-azo-p-(N,N-dimethylaniline) (PADA) in Brij30/isooctane/water microemulsions at 25°C. The results obtained show that the apparent rate constants for the formation of the Ni 2+ –PADA complex decreases as the surfactant concentration and the water content of the system increase. The apparent...
The complexation between Ni 2+ and pyridine-2-azo-p-dimethylaniline (PADA) was studied in isooctane/polyoxyethylenglycol dodecyl ether (Brij30)/water microemulsions at 25°C. The apparent complexation constant depends on microemulsion composition. The proposed model, which takes into account the heterogeneity of the system at the microscopic scale, allows us to determine the distribution constants...
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