Collect. Czech. Chem. Commun.
1983, 48, 3253-3260
https://doi.org/10.1135/cccc19833253
Effect of Fe(III) on specific adsorption of aliphatic carbamide derivatives at the dropping mercury electrode
Joanna Masłowska and Halina Czerwinska
Institute of Fundamental Food Chemistry, Polytechnical University, 90-924 Lodz, Poland
Abstract
The specific adsorption of carbamide and its aliphatic derivatives (L) was studied by the droptime method in the system Fe(ClO4)3-L-HClO4-H2O, and the adsorption process was elucidated. From the calculated surface concentrations and adsorption isotherms, it was found that the adsorption of aliphatic carbamide derivatives is higher in the presence of Fe(III) ions than in their absence under the same conditions. In the presence of Fe(III) ions at the interface, free molecules of carbamide derivatives and the complexes [Fe(H2O)6-nLn]3+ as well as the complexes [Fe(H2O)5-nLnLads]3+ and [Fe(H2O)5-nLnLads]2+ formed with the adsorbed ligand are adsorbed. The adsorption was found to proceed according to the Frumkin's isotherm.
