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The separation and photometric determination of small amounts of selenium and tellurium by thiourea

A. Jílek, J. Vřešťál, and J. Havíř

Technische Militärakademie Antonín Zápotocký in Brno

 

Abstract: A photometric detn. of small amts. (0.2-2.0 mg. in 5 ml.) of Se and Te in mixts. by thiourea is described. Se is pptd. in warm soln. by thiourea, dissolved in HCl + Br2, and, after reduction, detd. photometrically. In the clear soln. Te is detd. photometrically as a Te4+ complex or after the reduction with SnCl2.

Full paper in Portable Document Format: 102a110.pdf (in Czech)

 

Chemical Papers 10 (2) 110–115 (1956)

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