Comparative spectrophotometric study of the complexation and extraction of tellurium with various halide ions and N,N'-di(acetoxyethyl)indocarbocyanine

Ioseph S. Balogh, Vasil Andruch

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Comparative spectrophotometric study of the tellurium(IV) complexation and extraction with various ligands (chloride, bromide, iodide), and cyanine dye - N,N'-di(acetoxyethyl)indocarbocyanine (DAIC) was realised. In the acidic medium, extractable by aromatic hydrocarbons and esters of acetic acid, tellurium(IV) ion associates are formed. The most effective were proved to be of the chloride complexes of tellurium. The optimum conditions were found: 4.0-5.5M H2SO4, 1.25-3.0M LiCl, and (0.5-2.0)x10-4M DAIC. The molar absorptivity are (4.30-11.2)x104lmol-1cm-1 in reference to extractant. The iodide complexes are unsuitable for practical use. A novel extraction spectrophotometric procedure for tellurium determination in semiconductor thin films was developed. Copyright (C) 1999 Elsevier Science B.V.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalAnalytica Chimica Acta
Volume386
Issue number1-2
DOIs
Publication statusPublished - Apr 9 1999

Keywords

  • Complexation
  • Cyanine dye
  • Extraction
  • Spectrophotometry
  • Tellurium determination

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Environmental Chemistry
  • Spectroscopy

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