A New Spectrophotometry Determination of Cyanide by Solvent Extraction as Tris-(1,10-Phenanthroline)-Iron (II)-Thiocymate
- 1 September 1973
- journal article
- spectroscopy
- Published by Taylor & Francis in Analytical Letters
- Vol. 6 (9), 761-767
- https://doi.org/10.1080/00032717308058731
Abstract
By shaking aqueous cyanide solution with nitrobenzene contained sulfur, thiocyanate is formed and is extracted into the nitrobenzene as an ion pair of thiocyanate anion and tris-(1,10-phenanthroline)-iron(II) chelate cation. By measuring the color intensity of the organic phase at 516 nm, cyanide is determined spectrophotometrically. A linear calibration curve is obtained up to 4 × 10−5M of cyanide in the aqueous phase.Keywords
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