EXTRACTION-ABSORPTIOMETRIC DETERMINATION OF CADMIUM BY CRYSTAL VIOLET IN TOBACCO, MILK AND MILK PRODUCTS

Authors

  • Zh. M. Arstamyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia
  • S. V. Mkrtchyan Chair of Inorganic and Analytical Chemistry, YSU, Armenia

DOI:

https://doi.org/10.46991/PYSU:B/2009.43.1.029

Keywords:

cadmium, iodide anion complex, toluene–dichlorethan, determination of cadmium, crystal violet

Abstract

Interaction of iodide anion complex of cadmium with basic dye crystal violet has been investigated. Formed ionic associate could be extracted by toluene–dichlorethan (2:1) binary mixture. Maximal light absorption is observed at  λ=575–590 nm wavelengths. The optimal acidity of aqueous phase is pH 1, optimal concentration of crystal violet is 6.3·10–4–7.56·10–4 M and KI – 3·10–2–7·10–2 M.  The range of determined concentration is 0.25–5.0 mcg/mL, ε585 = 97000±600 (L·mol–1·cm–1). The method was used for determination of cadmium contents in tobacco, milk, sour cream and curd. The method is more sensitive and simple than those reported earlier.

Downloads

Published

2009-02-04

How to Cite

Arstamyan, Zh. M., and S. V. Mkrtchyan. 2009. “EXTRACTION-ABSORPTIOMETRIC DETERMINATION OF CADMIUM BY CRYSTAL VIOLET IN TOBACCO, MILK AND MILK PRODUCTS ”. Proceedings of the YSU B: Chemical and Biological Sciences 43 (1 (218):29-33. https://doi.org/10.46991/PYSU:B/2009.43.1.029.

Issue

Vol. 43 No. 1 (218) (2009)

Section

Chemistry

License

Copyright (c) 2009 Proceedings of the YSU

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Most read articles by the same author(s)