Investigation of 2-[2-(4-methoxy-phenylamino)-vinyl]-1,3,3-trimethyl-3H-indolium chloride as a new reagent for the determination of chromium(VI)

Vasil Andruch, Monika Telepčáková, Ioseph S. Balogh, Nikoleta Urbanová

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The complex formation and extraction of chromium(VI) with 2-[2-(4-methoxy-phenylamino)-vinyl]-1,3,3-trimethyl-3H-indolium chloride reagent was studied by means of spectrophotometry. The influence of medium acidity, the concentration of chloride ions and dye reagent, the nature of the extractant and some other factors (time of extraction, stability of color, interference, etc.) on the absorbance of colored extracts were studied. The optimum conditions were found to be 0.02-0.1M H2SO4, 1.0-1.5M NaCl, (2.0-2.5) x 10-4M of reagent. The absorbance of the colored extracts obeys Beer's Law in the range of 0.26-7.28 mg L-1. The procedure of Cr(VI) extraction and spectrophotometric determination was examined.

Original languageEnglish
Pages (from-to)109-113
Number of pages5
JournalMikrochimica Acta
Volume142
Issue number1-2
DOIs
Publication statusPublished - Sep 29 2003

Keywords

  • 2-[2-(4-methoxy-phenylamino)-vinyl]-1,3,3-trimethyl-3H-indolium chloride
  • Chromium(VI)
  • Complex formation
  • Extraction
  • Spectrophotometry

ASJC Scopus subject areas

  • Analytical Chemistry

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