Abstract
1-Phenyl-2-[2-hydroxy-3-sulfo-5-nitrophenylazo]butadione-1,3 (H2L) was synthesized from benzoylacetone. The dissociation constants of the reagent were determined (pK 1 = 4.98 ± 0.03 and pK 2 = 8.53 ± 0.01). Stability constants of some metal complexes with this reagent were determined by potentiometric and conductometric titrations. The stability of these complexes decreased in the following order: Fe > Cu > UO2 > Ni > Co > Zn > Cd > Mn > Mg > Ca. The copper(II) H2L complex with a stoichiometry of 1: 2 was studied by photometry. ε = 1.4 × 104, Beer is law was obeyed in the copper concentration range from 0.25 to 3.07 μg/mL. The effect of foreign ions and masking agents on complexation was studied. A procedure for the photometric determination of copper(II) in seawater was developed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Alieva, R.A., Chyragov, F.M., and Makhmudov, K.T., Zavod. Lab. Diagn. Mater., 2004, vol. 70, no. 9, p. 22.
Alieva, R.A., Chyragov, F.M., and Makhmudov, K.T., Zh. Anal. Khim., 2005, vol. 60, no. 2, p. 157 [J. Anal. Chem. (Engl. Transl.), vol. 60, no. 2, p. 137].
Gadzhieva, S.R., Makhmudov, K.T., and Chyragov, F.M., Zavod. Lab. Diagn. Mater., 2005, vol. 71, no. 9, p. 14.
Gadzhieva, S.R., Chyragov, F.M., and Makhmudov, K.T., Abstracts of Papers, Vserossiiskaya konferentsya “Analitika Rossii” posvyashchennaya 100-letiyu so dnya rozhdeniya akademika I.P. Alimarina (All-Russia Conf. Analitika Rossii (Russian Analytics) Dedicated to the Centenary of the Birth of Academician Alimarin), Moscow, 2004, p. 305.
Dedkov, Yu.M., Metody polucheniya khimicheskikh reaktivov i preparatov (Methods for Preparation of Chemical Reagents and Formulationss), Moscow: IREA, 1970.
Korostelev, P.P., Prigotovlenie rastvorov dlya khimikoanaliticheskikh rabot (Preparation of Solutions for Chemical Analytical Works), Moscow: Khimiya, 1964.
Dyatlova, N.M., Temkina, V.Ya., and Kolpakova, I.D., Kompleksony (Complexones), Moscow: Khimiya, 1970.
Alieva, R.A., Chyragov, F.M., Makhmudov, K.T., and Babanly, M.B., Zh. Neorg. Khim., 2005, vol. 50, no. 1, p. 137 [Russ. J. Inorg. Chem. (Engl. Transl.), vol. 50, no. 1, p. 131].
Inczedy, J., Analytical Application of Complex Equilibria, Budapest: Akademiai Kiado, 1976.
Bjerrum, J., Metal Amine Formation in Aqueous Solution: Theory of the Reversible Step Reactions, Copenhagen: Haase, 1957.
Khudyakova, T.A. and Kreshkov, A.P., Teoriya i praktika konduktometricheskogo i khronokonduktometricheskogo analiza (Theory and Practice of Conductometric and Chronoconductometric Analysis), Moscow: Khimiya, 1976.
Bulatov, M. and Kalinkin, I., Prakticheskoe rukovodstvo po fotokolorimetricheskim i spektrofotometricheskim metodam analiza (Manual on Photocolorimetric and Spectrophotometric Analytical Techniques), Leningrad: Khimiya, 1972.
Dorokhova, E.N. and Prokhorova, G.V., Zadachi i voprosy po analiticheskoi khimii (Book of Problems and Questions on Analytical Chemistry), Moscow: Mir, 2001.
Astakhov, K.V., Verinikin, V.B., Zimin, V.I., and Zvereva, A.D., Zh. Neorg. Khim., 1961, vol. 6, no. 6, p. 2069.
Podchainova, V.N. and Simonova, L.N., Analiticheskaya khimiya medi (Analytical Chemistry of Copper), Moscow: Nauka, 1990.
Neudachina, L.K., Osintseva, E.V., Skorik, Yu.A., and Vshivkova, A.A., Zh. Anal. Khim., 2005, vol. 60, no. 3, p. 271 [J. Anal. Chem. (Engl. Transl.), vol. 60, no. 3, p. 240].
Author information
Authors and Affiliations
Additional information
Original Russian Text © S.R. Gadzhieva, F.M. Chyragov, K.T. Makhmudov, 2007, published in Zhurnal Analiticheskoi Khimii, 2007, Vol. 62, No. 11, pp. 1143–1146.
Rights and permissions
About this article
Cite this article
Gadzhieva, S.R., Chyragov, F.M. & Makhmudov, K.T. Complexation of copper(II) with azo derivatives of benzoylacetone. J Anal Chem 62, 1028–1031 (2007). https://doi.org/10.1134/S1061934807110056
Received:
Issue Date:
DOI: https://doi.org/10.1134/S1061934807110056