ISSN : 2348 - 8948

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Volume : 5 Issue :11 Month : November (2017)
Page Numbers : 423-428

Speciation of Binary Complexes of Cd(II) and Pb(II), With L-Glutamine In Cationic Micellar Medium

P. Sujatha*, G. Himabindu, P. Surya Sunitha and Y.Vamsi Kumar
A computer assisted pH-metric investigation has been made on the speciation of binary complexes of Cd(II) and Pb(II) with L-Glutamine(Gln). The titrations are carried out with sodium hydroxide in varying concentrations (0.0 – 2.5% w/v) of CTAB –water mixtures at an ionic strength of 0.16 mol L-1 and at a temperature of 303 K. The stability constants were determined using the computer program MINIQUAD 75. The best fit chemical models are chosen based on statistical parameters like crystallographic R-factor, χ2, skewness and kurtosis. The effect of solvent, dielectric constant of the medium and the electrostatic interactions between the complex species on the stability of the complexes are discussed.
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