The Effect of Metal Cations on the Aqueous Behavior of Dopamine. Thermodynamic Investigation of the Binary and Ternary Interactions with Cd²⁺, Cu²⁺ and UO₂²⁺ in NaCl at Different Ionic Strengths and Temperatures.

ABSTRACT: The interactions of dopamine [2-(3,4-Dihydroxyphenyl)ethylamine, (Dop^-)] with cadmium(II), copper(II) and uranyl(VI) were studied in NaCl(aq) at different ionic strengths (0 ≤ I/mol dm^-3 ≤ 1.0) and temperatures (288.15 ≤ T/K ≤ 318.15). From the elaboration of the experimental data, it was found that the speciation models are featured by species of different stoichiometry and stability. In particular for cadmium, the formation of only MLH, ML and ML₂ (M = Cd²⁺; L = dopamine) species was obtained. For uranyl(VI) (UO₂²⁺), the speciation scheme is influenced by the use of UO₂(acetate)₂ salt as a chemical; in this case, the formation of ML₂, MLOH and the ternary MLAc (Ac = acetate) s

SUBMITTER: Gigliuto A 

PROVIDER: S-EPMC8709034 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature