Spectrophotometric Evaluation of Stability Constants of Copper, Cobalt, Nickel and Zinc with 2-Thiobarbituric Acid in Aqueous Solution | Zendy

Farshid Farnood Ahmadi | Zendy; Amir Sarrafi | Zendy; M. M. Ghashghaee | Zendy

Open Access

Spectrophotometric Evaluation of Stability Constants of Copper, Cobalt, Nickel and Zinc with 2-Thiobarbituric Acid in Aqueous Solution

Author(s) -

Farshid Farnood Ahmadi,

Amir Sarrafi,

M. M. Ghashghaee

Publication year - 2009

Publication title -

journal of chemistry

Language(s) - English

Resource type - Journals

eISSN - 2090-9063

pISSN - 2090-9071

DOI - 10.1155/2009/965619

Subject(s) - copper , zinc , cobalt , aqueous solution , nickel , chemistry , inorganic chemistry , thiobarbituric acid , nuclear chemistry , organic chemistry , antioxidant , lipid peroxidation

Stoichiometry and equilibrium study of ion-ligand conducted in aqueous solution by spectrophotometry. Stability constants of the complexes are determined at 25 o C, ionic strength was adjusted to 0.2 (% w/v) with NaCl. The pH was adjusted to 6. 2-Thiobarbituric acid-ion complexes' stability was calculated in aqueous solution using DATAN (Data Analysis program). The results of this method denote formation specie ML 2. The log K for ions Cu +2 ,Co +2 ,Ni +2 and Zn +2 were 4.89, 4.69, 4.47 and 4.82, respectively.

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