Polarographic study of the coordinated system Zn II ‐alanine‐alaninate ion | Zendy

González Manuel De La Cuesta | Zendy; Sánchez Mariana Cuesta | Zendy; Morales Juan C. Ruiz | Zendy; Placeres Jesús C. Rodríguez | Zendy

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Polarographic study of the coordinated system Zn II ‐alanine‐alaninate ion

Author(s) -

González Manuel De La Cuesta,

Sánchez Mariana Cuesta,

Morales Juan C. Ruiz,

Placeres Jesús C. Rodríguez

Publication year - 1996

Publication title -

electroanalysis

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.574

H-Index - 128

eISSN - 1521-4109

pISSN - 1040-0397

DOI - 10.1002/elan.1140080518

Subject(s) - polarography , chemistry , alanine , aqueous solution , ligand (biochemistry) , ion , nuclear chemistry , inorganic chemistry , biochemistry , organic chemistry , receptor , amino acid

Polarography has been applied to the study of the mixed‐ligand system Zn II ‐alanine‐alaninate, in aqueous medium, at I = 1.0 M NaClO 4 and 25 ± 0.05°C. The study of the quasireversible waves characteristic of Zn II has been carried out by means of a new method of analysis, which is faster and more accurate than traditional methods. The stabilization of the coordinated species [ZnA] 2+ (β 10 = 1.8), [ZnA 2 ] 2+ (β 20 = 0.52), [Zn(A − )] + (β 01 = 9.1 × 10 4 ), [Zn(A − ) 2 ] (β 02 = 9.4 × 10 8 ) and [ZnA(A − )] + (β 11 = 6.2 × 10 4 ) has been established.

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