PRECONCENTRATION OF CR(VI) ION ON MELAMINE FORMALDEHYDE RESIN

DEMIRATA B.

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, vol.343, no.4, pp.357-359, 1992 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 343 Issue: 4
  • Publication Date: 1992
  • Doi Number: 10.1007/bf00322869
  • Journal Name: FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.357-359
  • Istanbul Technical University Affiliated: No

Abstract

Trace amounts of Cr(VI) have been enriched from aqueous solutions by exchange of Cr(VI) on melamine-formaldehyde resin. The exchange capacity increased at lower pH-values. The material was used to preconcentrate Cr(VI) very efficiently from 0.1-mu-g ml-1 solutions of chromate. After the Cr(VI) adsorbed on the column is eluted, it is analysed by atomic absorption spectroscopy and almost 100% recovery was achieved in every instance. The effect of other anions was examined and it was observed that the adsorption of Cr(VI) was not significantly affected by the presence of other anions.