INVESTIGATION OF INTERACTION OF PHENYLTHIOUREA WITH MANGANESE (VII) AND CROMIUM (VI) AND DETERMINATION OF CROMIUM IN CROMIUM-CONTAINING ORE BY MEANS OF POTENTIOMETRIC TITRATION METHOD

Authors

  • H. H. Darbinyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • A. R. Mkrtchyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • G. N. Shaposhnikova Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • H. G. Khachatryan Chair of Inorganic and Analytical Chemistry, YSU, Armenia

DOI:

https://doi.org/10.46991/PYSU:B/2010.44.1.023

Keywords:

phenylthiourea, manganese, chromium, potentiometric titration, molar ration

Abstract

Interaction of phenylthiourea (PTU) with manganese (VII) and chromium (VI) has been studied by means of the potentiometry, spectrophotometry and amperometry methods. It has been established that the molar ration of the reacting components is Mn(VII) : PTU = 3 : 2 and Cr(VI) : PTU = 2 : 1 correspondingly. The conformity to the amperometry main law is observed within 5.0·10-6 (0.00275 mg/mL)–1.0·10-2 М (0.55 mg/mL) and 1.0·10-5 M (0.00112 mg/mL)–7.71·10-4 M (0.086 mg/mL) concentration ranges for Mn (VII) and Cr (VI) correspondingly. The method of potentiometric titration of chromium by PTU has been applied for its determination in the chromium-containing ore with 0.87% relative error.

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Published

2010-02-24

How to Cite

Darbinyan, H. H., A. R. Mkrtchyan, G. N. Shaposhnikova, and H. G. Khachatryan. 2010. “INVESTIGATION OF INTERACTION OF PHENYLTHIOUREA WITH MANGANESE (VII) AND CROMIUM (VI) AND DETERMINATION OF CROMIUM IN CROMIUM-CONTAINING ORE BY MEANS OF POTENTIOMETRIC TITRATION METHOD”. Proceedings of the YSU B: Chemical and Biological Sciences 44 (1 (221):23-28. https://doi.org/10.46991/PYSU:B/2010.44.1.023.

Issue

Vol. 44 No. 1 (221) (2010)

Section

Chemistry

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Copyright (c) 2010 Proceedings of the YSU

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