1. Application of countercurrent chromatography to the purification of chemical reagents
- Author
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Boris Ya. Spivakov, Tatiana A. Maryutina, and P. Tschöpel
- Subjects
Countercurrent chromatography ,Chromatography ,Chemistry ,visual_art ,Reagent ,Metal impurities ,visual_art.visual_art_medium ,Trace analysis ,Ceramic ,Biochemistry ,Evaporation (deposition) ,Decomposition ,Analytical Chemistry - Abstract
Countercurrent chromatography has been employed for the purification of solid chemical reagents, such as (NH(4))(2)SO(4), NH(4)HSO(4), NH(4)F and NH(4)Cl from a number of most common metal impurities (Fe, Al, Zn, Cu, Co, Cd, Ni, Cr, Ca, Mg, K) in order to gain high-purity reagents. After evaporation these can be used for fusion decomposition purposes in trace analysis of various refractory materials (e.g. high tech ceramics). N,N-hexamethylenedithiocarbamic acid, 8-hydroxyquinoline, dibenzo-18-crown-6 and dicyclohexano-18-crown-6 were used as extracting reagents.
- Published
- 1996
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