Abstract
The polarographic behaviour of salicylaldehyde-2-pyridylhydrazone (SAPH) has been studied in aqueous buffer solution containing 40% ethanol using DC and DP polarographic methods. In the pH range 1.8–7.5 the observed single irreversible reduction wave is assigned to the splitting of the N-N bond and reduction of C=N centre. In alkaline medium, a second wave appears at a more negative potential due to the reduction of the salicylaldehyde which is formed by hydrolytic decomposition of the SAPH molecule. The effect of pH on the limiting current andE 1/2 as well as the reduction mechanism are discussed and compared with similar compounds. The kinetic parameters of the electrode reaction have been calculated.
The analytical properties of the copper(II)-SAPH system is described. The complex gave rise to a single irreversible well-defined wave (E 1/2=−0.58 V at pH=5.2). The reaction process is diffusion controlled. A method is suggested for the determination of Cu(II) in presence of different metal ions as the difference in theirE 1/2 values is sufficient for the purpose.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
C. F. Bell, D. R. Rose,Talanta 1965,12, 696.
M. A. Quddus, C. F. Bell,Anal. Chim. Acta 1968,42, 503.
C. F. Bell, M. A. Quddus,Anal. Chim. Acta 1970,52, 313.
M. Katyal, Y. Dutt,Talanta 1975,22, 151.
R. B. Singh, H. L. Ray, B. S. Gary, R. P. Singh,Talanta 1979,26, 898.
G. S. Vasilikiotis, H. Alexaki Tzivanidon,Microchem. J. 1981,26, 519.
M. Otomo,Anal. Chim. Acta 1980,116, 161.
R. B. Singh, B. S. Garg, R. P. Singh,Analyst 1979,104, 1188.
R. B. Singh, P. Jain, R. P. Singh,Talanta 1982,29, 77.
R. Salim, A. Z. Abu Zuhri, J. Shalabi,Mikrochem. J. 1986,33, 226.
R. G. Anderson, G. Nickless,Talanta 1967,14, 1221.
M. A. Elnagdi, H. M. Fahmy, M. A. Morsi,J. Electroanal. Chem. 1976,68, 237.
H. Lund,Acta Chem. Scand. 1959,13, 249.
M. E. Cardinali, I. Carelli, R. Andruzzi,J. Electroanal. Chem. 1973,47, 335.
Yu. P. Kitaev, I. M. Shrekova, L. I. Maslova,Izv. Akad. Nauk SSSR Ser. Khim. 1970,10, 2194.
M. A. Gomez Nieto, M. D. Lugue De Castro, M. Valcarcel,Electrochim. Acta 1983,28, 1725.
A. Z. Abu Zuhri, J. S. Shalabi,J. Chem. Soc. Perkin Trans. II 1985,4, 499.
A. Z. Abu Zuhri, J. S. Shalabi,Monatsh. Chem. (in press).
S. I. H. Britton,Hydrogen Ions, 4th Ed., Chapman and Hall, London, 1952.
A. I. Vogel,A Text Book of Quantitative Inorganic Analysis, 3rd Ed., Longman, London, 1961, pp. 358 and 511.
L. Meites,Polarographic Techniques, 2nd Ed., Wiley, New York, 1965.
Y. M. Temerk, I. M. Issa, A. Z. Abu Zuhri,J. Chem. Soc. Perkin Trans. II 1979,11, 1465.
Y. M. Temerk, A. Z. Abu Zuhri,Electrochim. Acta 1980,25, 1287.
B. Nygard,Ark. Kemi 1962,20, 163.
T. N. Hoang,Comp. Rend. 1979,208, 1039.
M. A. Gomez, M. D. Lugue De Castro, M. Valcarcel,Electrochim. Acta 1983,28, 325.
J. Koutecky,Collect. Czech. Chem. Commun. 1953,8, 597;Chem. Listry 1953,47, 323.
Z. Gorlich, M. Jaskula, E. Markiewicz,Electrochim. Acta 1985,30 (7), 965.
Author information
Authors and Affiliations
Additional information
This work is taken partly from the M. Sc. Thesis of Jamal S. Shalabi
Rights and permissions
About this article
Cite this article
Abu Zuhri, A.Z., Abu-Eid, M.A. & Shalabi, J.S. Polarographic behaviour of salicylaldehyde-2-pyridylhydrazone and its copper(II) complex. Mikrochim Acta 92, 153–161 (1987). https://doi.org/10.1007/BF01201835
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01201835