Collect. Czech. Chem. Commun.
2003, 68, 663-671
https://doi.org/10.1135/cccc20030663
Polarographic Study of the Systems Pb(II)-Valine and Pb(II)-Valinate Ion Under Physiological Conditions
Jesús C. Rodríguez Placeresa,*, Josefa Castro Maciasa, Mercedes Lemus Sáncheza, Teresa M. Borges Miquelb and Juan C. Ruiz-Moralesa
a Department of Physical Chemistry, University of La Laguna, Tenerife, Canary Islands, Spain
b Department of Analytical Chemistry, University of La Laguna, Tenerife, Canary Islands, Spain
Abstract
The polarographic method has been used to the study of the systems Pb(II)-valine and Pb(II)-valinate ion in aqueous medium, at I = 0.15 mol l-1 (NaClO4) and 37 °C. The stabilized complexes were found: [Pb(HV)]2+, β10 = 9.0; [Pb(HV)2]2+, β20 = 12; [Pb(V)]+, β01 = 1.8 × 104; and [Pb(V)2], β02 = 1.7 × 106.
Keywords: Stability constants; Speciation; Amino acids; Valine; Lead complexes; Pb(II); Polarography; Electroreductions; Electrochemistry.
References: 9 live references.
