EXTRACTION-ABSORBTIOMETRIC DETERMINATION OF MICROGRAM AMOUNTS OF RHODIUM (III) OF THIAZINE ROW THIONINE YELLOW

Authors

  • N. O. Geokchyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • M. J. Gekchyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • J. A. Mickaelyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • A. A. Eghiazaryan Chair of Inorganic and Analytical Chemistry, YSU, Armenia

DOI:

https://doi.org/10.46991/PYSU:B/2008.42.2.080

Keywords:

Rhodium (III), thionine yellow, ion associate, dychlorethan–carbon tetrachloride, coefficient of extraction

Abstract

Rhodium (III) interacts with thionine yellow in hydrochloric acid solutions. The formed ion associate could be extracted by the dychlorethan–carbon tetrachloride (2.5 + 2.5) plus aceton (5 mL) mixture, maximal extinction is observed at the value of wavelength 588 nm. Optimal acidity of aquas solutions is pH 1.0 by HCl. The optimal quantity of dye is 1.2–1.8 mL of 0,05% solutions. The coefficient of extraction is 98.6%. The range of determined concentration is 2.2–35.1 mcg of Rh(III) in 10 mL of aqueous phase. The value of seeming coefficient of thionine yellow tetrachlorrhodiate (III) ionic associates organic extracts molar extinction  $\epsilon_{588}=$1.05·104 L ·mol-1· cm-1 . The molar ratio beetwin thionine cation and tetrachlorrodiate (III) is 1:1.

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Published

2023-09-22

How to Cite

Geokchyan, N. O., M. J. Gekchyan, J. A. Mickaelyan, and A. A. Eghiazaryan. 2023. “EXTRACTION-ABSORBTIOMETRIC DETERMINATION OF MICROGRAM AMOUNTS OF RHODIUM (III) OF THIAZINE ROW THIONINE YELLOW”. Proceedings of the YSU B: Chemical and Biological Sciences 42 (2 (216):80-84. https://doi.org/10.46991/PYSU:B/2008.42.2.080.

Issue

Vol. 42 No. 2 (216) (2008)

Section

Chemistry

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