International Journal of Chemical Science

International Journal of Chemical Science


International Journal of Chemical Science
International Journal of Chemical Science
Vol. 1, Issue 2 (2017)

Speciation of binary complexes of Pb(II), Cd(II) and Hg(II) with L-dopa in Acetonitrile-water mixtures


J Prasanthi, D Aditya Deepthi, G Nageswara Rao

Speciation of binary complexes of Pb(II), Cd(II) and Hg(II) with L-3,4-DIhydroxyphenylalanine (dopa) in (0-60% v/v) acetonitrile-water mixtures have been studied pH-metrically at a tempature of 303 K at an ionic strength of 0.16mol L-1. The models for binary species contain ML2H for Pb(II), MLH, ML2H for Cd(II) and MLH, ML2H2 for Hg(II). The trend in the variation of stability constants with the mole fraction of acotonitrile was explained on the basis of electrostatic and non electrostatic forces. Distribution of the species with pH at different compositions of acetonitrile-water media was also presented.
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How to cite this article:
J Prasanthi, D Aditya Deepthi, G Nageswara Rao. Speciation of binary complexes of Pb(II), Cd(II) and Hg(II) with L-dopa in Acetonitrile-water mixtures. International Journal of Chemical Science, Volume 1, Issue 2, 2017, Pages 60-64
International Journal of Chemical Science