Using dimethyl indocarbocyanide (DIC) as ion-pair agent for chromium speciation and its application in GFAAS analysis of water

Roland Karosi, Klára Boruzs, Áron Béni, J. Posta, József Balogh, Vasil Andruch

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A novel procedure for the determination of Cr(vi) using electrothermal atomic absorption spectrometry with Zeeman background correction was developed. The method is based on the reaction of Cr(vi) with dimethyl indocarbocyanine (DIC) in acidic medium in the presence of chloride ion followed by liquid-liquid extraction of the ion associate formed and subsequent GFAAS detection. The optimum conditions (pH, concentrations of chloride ion and DIC) were determined for the extraction of Cr(vi) into toluene. Furthermore, the effect of temperature on the separation, the stability of the complex formed, possibilities of preconcentration and possible interference of Fe, Cd, Co, Ba, Al, Hg, Zn, Ni, Cu, V, Mn and Pb were studied as well. The detection limit (LOD) of the method for Cr(vi) was found to be 0.25 μg L -1 and RSD was mostly better than 5% using a 1:1 ratio for the organic and water phases.

Original languageEnglish
Pages (from-to)2361-2364
Number of pages4
JournalAnalytical Methods
Volume4
Issue number8
DOIs
Publication statusPublished - Aug 2012

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Chromium
Ions
Water
Chlorides
Atomic absorption spectrometry
Toluene
Liquids
Temperature

ASJC Scopus subject areas

  • Analytical Chemistry
  • Engineering(all)
  • Chemical Engineering(all)

Cite this

Using dimethyl indocarbocyanide (DIC) as ion-pair agent for chromium speciation and its application in GFAAS analysis of water. / Karosi, Roland; Boruzs, Klára; Béni, Áron; Posta, J.; Balogh, József; Andruch, Vasil.

In: Analytical Methods, Vol. 4, No. 8, 08.2012, p. 2361-2364.

Research output: Contribution to journalArticle

Karosi, Roland ; Boruzs, Klára ; Béni, Áron ; Posta, J. ; Balogh, József ; Andruch, Vasil. / Using dimethyl indocarbocyanide (DIC) as ion-pair agent for chromium speciation and its application in GFAAS analysis of water. In: Analytical Methods. 2012 ; Vol. 4, No. 8. pp. 2361-2364.
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