Determination of Trace of Metals by the Extraction of Inorganic Compounds with Organic Solvents. I : Microdetermination of Cobalt
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The complex compounds of cobalt with ammonium thiocyanate was extracted with several solvents, and its extinctancy was measured at 320 and 620 mμ with Beckmann model DU spectrophotometer. The hydrogen ion concentration of the solution, solvents useful for the extraction of the compound and other conditions suitable for the determination of cobalt at 320 and 620 mμ were spectrophotometrically investigated. 1〜10γ of cobalt at 620 and 320 mμ and 0.1〜1γ of cobalt at 320 mμ were determined by the present method.
- 東北大学の論文
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