DETERMINATION OF CHROMIUM (VI) BY MEANS OF AMPEROMETRIC TITRATION METHOD USING TETRAMETHYLTHIONIN

Authors

  • H. H. Darbinyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • G. H. 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/2009.43.2.065

Keywords:

bichromate ions, tetramethylthionin, hydrochloric acid, sulfuric acid, titration, chromium-containing ore

Abstract

The interaction of bichromate ions with tetramethylthionin by means of amperometric titration method has been studied. The titration may be carried in the following acidity range: 0.1–5.0 M by sulfuric acid and 0.1–1.0 M by hydrochloric acid. The molar ration between the acting components equals [Cr2O7 2-]:[TMT+ ]=1:2. The obeying to the main law of amperometry continued during the titration of 6.0⋅10-5–1.3⋅10-3 M (0.00624–0.14 mg/mL) bichromate solutions. The technique worked out has been tested analyzing chromium-containing ore with acceptable determination error values (2.44% rel.)

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Published

2009-05-22

How to Cite

Darbinyan, H. H., G. H. Shaposhnikova, and H. G. Khachatryan. 2009. “DETERMINATION OF CHROMIUM (VI) BY MEANS OF AMPEROMETRIC TITRATION METHOD USING TETRAMETHYLTHIONIN”. Proceedings of the YSU B: Chemical and Biological Sciences 43 (2 (219):65-67. https://doi.org/10.46991/PYSU:B/2009.43.2.065.

Issue

Vol. 43 No. 2 (219) (2009)

Section

Short Communications

License

Copyright (c) 2009 Proceedings of the YSU

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