Spectrophotometric determination of zinc with 1-(2-pyridylmethylidene)-5-(salicylidene)thiocarbohydrazone |
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| Authors: | Daniel Rosales José L. Gómez-Ariza |
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| Affiliation: | Department of Analytical Chemistry, Faculty of Chemistry, University of Sevilla, 41012 Sevilla Spain |
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| Abstract: | The absorbance of the yellow complex formed in pH 4.8 acetate buffer is measured at 410 nm in 40% (v/v) dimethylformamide. The molar absorptivity is 68 000 l mol?1 cm?1. The effect of interferences is discussed, and the method is applied to zinc in tap water and standard alloys. |
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