Determining rhenium in weak processing solutions
Analytical methods of determining rhenium in production solutions and solid materials almost always include a stage of separating molybdenum, since these elements occur together in molybdenum ores and concentrates. The authors have developed a method of analysis for rhenium in low-concentration industrial solutions containing a complicated set of impurities. The molybdenum is separated from rhenium in a separating funnel and the acidity is brought to 1 M. A 20% solution of KCNS is added together with ascorbic acid. The funnel is shaken for 1-2 min and left to stand until the molybdenum is completely reduced (5-10 min), and then the thiocyanate complex of the molybdenum is extracted with diethyl ether. The lower water layer is transferred to a volumetric flask and the necessary reagents are added to reduce the rhenium and produce the yellow-orange rhenium thiocyanate complex. The peak optical density of the complex is measured with a photocolorimeter and the absorption spectra are recorded with a spectrophotometer.
- Research Organization:
- Institute of General and Inorganic Chemistry, Kiev, USSR
- OSTI ID:
- 6037775
- Journal Information:
- Ind. Lab. (Engl. Transl.); (United States), Vol. 52:3; Other Information: Translated from Zavod. Lab.; 52: No.3, 7-9(Mar 1986)
- Country of Publication:
- United States
- Language:
- English
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