AMPEROMETRIC TITRATION OF PERRHENATE-IONS BY METHYL VIOLET AND CRYSTAL VIOLET ORGANIC BASIC DYES

Authors

  • Sh. A. Gyulnazaryan ASU, YSU, NAS of RA, Armenia

DOI:

https://doi.org/10.46991/PYSU:B/2004.38.1.071

Keywords:

perrhenat-ions, triphenylmethanic basic dyes, amperometric titration method, Methyl Violet, Crystal Violet, rhenium(VII)

Abstract

An interaction of perrhenat-ions with Methyl Violet and Crystal Violet triphenylmethanic basic dyes has been studied by amperometric titration method. Titration has been carried out by dyes oxidation current on the platinum indicating electrode at +1.4 V potential. It has been estimated that equivalent point of the chemical reaction is observed at 1 : 1 molar ratio of the reacting components. Acidity optimal for the determination of rhenium(VII) corresponds to the 0.1–1.0 mol/L and 0.1–1.5 mol/L phosphoric acid solutions, correspondingly for Methyl Violet and Crystal Violet. Submission to the amperometry’s main law observed within 2·10-4–4·10-3 mol/L rhenium(VII) concentration range. It is also studied the influence of the series of accompanying elements on the amperometric determination of rhenium(VII). Mathematical treatment of experimental data obtained has been done.

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Published

2003-12-28

How to Cite

Gyulnazaryan, Sh. A. 2003. “AMPEROMETRIC TITRATION OF PERRHENATE-IONS BY METHYL VIOLET AND CRYSTAL VIOLET ORGANIC BASIC DYES”. Proceedings of the YSU B: Chemical and Biological Sciences 38 (1 (203):71-75. https://doi.org/10.46991/PYSU:B/2004.38.1.071.

Issue

Vol. 38 No. 1 (203) (2004)

Section

Chemistry

License

Copyright (c) 2003 Proceedings of the YSU

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