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Differential Pulse Anodic Stripping Voltammetric Study of Zinc-Ethylenediamine Complex

Author Affiliations

  • 1Department of Chemistry, Jahangirnagar University, Savar Dhaka-1342, BANGLADESH

Res.J.chem.sci., Volume 3, Issue (9), Pages 5-9, September,18 (2013)

Abstract

Differential pulse anodic stripping voltammetric study of zinc-ethylenediamine complex has been investigated using thin mercury film coated glassy carbon electrode at 30C. The overall work was carried out at constant ionic strength (I = 0.20 mol dm-3) and pH (9.100.10). The electrode processes were found to be reversible and diffusion controlled. The results revealed that zinc forms three (1:1, 1:2 and 1:3- metal: ligand) complexes with ethylenediamine (en). The values of stability constant of zinc complexes were found to be 106.03, 1010.16 and 1013.98 for ZnL, ZnL2 and ZnL3, respectively (the overall charges were omitted for simplicity). The percentage of all possible zinc species were calculated using the stability constant of zinc complexes and hydrolysis constant of zinc under present experimental conditions.

References

  1. Patel Ketan B, Patel Yogesh M. and Patel Raksha B., Metal complexes of 5-[benzyloxy methyl] quinoline-8-ol and 8-quinolinol mixed ligand: A new transition metal complexes with In-Vitro antifungal activity, Res. J. Recent Sci., 2 (ISC-2012),55-60 (2013)
  2. Eisler R., Zinc hazard to fish, wildlife and invertebrates: a synoptic review, Contaminant Hazard Reviews, 10 (1993)
  3. Francis A.R and Masilamai D., Removal of zinc by non living biomass of Agaricus Bisporus, Res. J. Recent Sci., 1(9), 13-17 (2012)
  4. Buffle J., Complexation reaction in aquatic system: An analytical approach, Ellis Horwood, Chichester, pp. 467-562 (1988)
  5. Kissinger P.T. and Heinemann W.R., Laboratory Techniques in Electroanalytical Chemistry, Marcel Dekker, New York, (1996)
  6. Nahar N., Electrochemical study of speciation of lead(II) in aqueous solution in ppb level in presence of cysteine, Jahangirnagar University Journal of Science, 26, 55-66 (2003)
  7. arj M.M. and Malinowski E.R., Complexation between copper (II) and glycine in aqueous acid solutions by window factor analysis of visible spectra, Anal. Chem., 68, 1593-1598 (1996)
  8. Corrie A.M., Walker M.D. and Williams D.R., Thermodynamic considerations, Part XXII, Sequestering ligands for improving the treatment of plumbism and cadmiumism, J. Chem. Soc., Dalton Trans., 1012-1015 (1976)
  9. Gardiner H., The chemistry of cadmium in natural water-I: A study of cadmium complex formation using the cadmium specific-ion electrode, Water Res., 8, 23-30 (1974)
  10. Stiff M.J. Copper/bicarbonate equilibria in solutions of bicarbonate ion at concentrations similar to those found in natural water, Water Res., , 171-176 (1971)
  11. Nahar N., Anshaya R. and Abser M. N., Electrochemical Studies on Speciation of Cadmium(II) in ppb Level by Complexation with Ethylenediamine in Aqueous Media, Bangladesh J. Sci. Ind. Res., 44(1), 1-10 (2009)
  12. Nahar N., Mona N. P. and Abser M. N., Electrochemical Studies on Complexation and Speciation of Copper(II) in ppb Level with 1,10-Phenanthroline in Aqueous Media, Bangladesh J. Sci. Ind. Res, 46(12), 219-224 (2011)
  13. DeFord D.D. and Hume D.N., The Determination of consecutive formation constants of complex ions from polarographic data, J. Amer. Chem. Soc., 73, 5321-5322 (1951)
  14. Martell A.E. and Smith R.M., Critical Stability Constants, Plenum Press, New York,5, 143 (1982)