PRECONCENTRATION OF CR(VI) ION ON MELAMINE FORMALDEHYDE RESIN


DEMIRATA B.

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, cilt.343, ss.357-359, 1992 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 343 Konu: 4
  • Basım Tarihi: 1992
  • Doi Numarası: 10.1007/bf00322869
  • Dergi Adı: FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
  • Sayfa Sayıları: ss.357-359

Özet

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.