Spectrophotometric determination of mercury with 5-(6-methyl-2-pyridyl)methylene-2-thiohydantoin |
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| Authors: | F Barragn de la Rosa M T Montaa Gonzalez J L Gmez Ariza |
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| Institution: | Department of Analytical Chemistry, Faculty of Science and Pharmacy, University of Seville, Seville, Spain |
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| Abstract: | A method is described for the direct spectrophotometric determination of mercury(II) with 5-(6-methyl-2-pyridyl)methylene-2-thiohydantoin. The influence of the different experimental parameters on the formation of the complex were studied and optimum conditions for the determination of mercury were established. The precision of the procedure, expressed in terms of relative standard deviation, was 0.2%. Two different complexes (1:2 and 1:1 cation-reagent stoichiometries) have been detected. The method has been tested on copper amalgam for dental use. |
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| Keywords: | To whom all correspondance should be addressed |
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