Spectrophotometric determination of cobalt with cyclohexane-1, 2-dione bis(2-pyridylhydrazone)
| Autor: | Juan A. Muñoz Leyva, D. Rosales, José L. Gómez Ariza |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
Cyclohexane
Inorganic chemistry chemistry.chemical_element Molar absorptivity Biochemistry Analytical Chemistry Absorbance Metal chemistry.chemical_compound chemistry visual_art Electrochemistry visual_art.visual_art_medium Environmental Chemistry Dimethylformamide Perchloric acid Cobalt Quantitative analysis (chemistry) Spectroscopy |
| Zdroj: | The Analyst. 109:1047 |
| ISSN: | 1364-5528 0003-2654 |
| Popis: | A method for the spectrophotometric determination of cobalt with cyclohexane-1,2-dione bis(2-pyridylhydrazone) is described. The pink complex is formed at an initial pH of 4–5 in a medium containing 12%V/V dimethylformamide, and the absorbance is measured at 525 nm at a final perchloric acid concentration of ca. 0.5 M. The molar absorbtivity is 13700 l mol–1 cm–1. The method has been applied to the determination of cobalt in alloys and minerals. |
| Databáze: | OpenAIRE |
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