Separation of Cr(III) and Cr(VI) using melamine-formaldehyde resin and determination of both species in water by FAAS


Demirata B., Tor I., Filik H., Afsar H.

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, cilt.356, sa.6, ss.375-377, 1996 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 356 Konu: 6
  • Basım Tarihi: 1996
  • Doi Numarası: 10.1007/s0021663560375
  • Dergi Adı: FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
  • Sayfa Sayıları: ss.375-377

Özet

A method is described for the determination of Cr(VI) and total chromium by FAAS. Cr(VI) is separated from Cr(III) by adsorption on melamine-formaldehyde resin. After elution of Cr(VI) with 0.1 mol/l NaAc solution, it is analysed by FAAS. Total chromium is determined by FAAS after conversion of Cr(III) to Cr(VI) by oxidation with hydrogen peroxide, total Cr(VI) is concentrated as above. If the total concentration of chromium is sufficient, the determination can be directly made by FAAS. Cr(III) can then be calculated by subtracting Cr(VI) from the total Cr. This method was successfully applied to the determination of chromium in lake water.