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A HIGHLY SELECTIVE CINAMMOYLTHIOAMIDE DERIVATIVE USED FOR SPECTROMETRIC DETERMINATION OF MERCURY CONTENT IN ENVIRONMENTAL SAMPLES

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Author(s): Irinel Adriana Badea | Cornelia Cercasov | Alexandra Ruja

Journal: Analele Universitatii Bucuresti : Chimie
ISSN 1220-871X

Volume: XVI;
Issue: II;
Start page: 11;
Date: 2007;
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ABSTRACT
A spectroscopic study of Hg(II) complex of 3,4,5-trimethoxycinammoylthioamide ligand has been carried out. In aqueous solutions in a pH* range 1.00 – 9.00 the 3,4,5 trimethoxycinammoylthioamide forms with mercury (II) a 1:2 complex with the total stability constant, b equal to 1.56×107 at 20 ± 2°C. The experimental data are correlated to some theoretical parameters obtained by semi-empirical AM1, PM3, ZINDO and ab initio 6-31G* methods. Based on the spectrometric study a selective and sensitive method has been developed for the determination of mercury (II) in various type of samples. The method was fully validated.

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