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

doi:10.1007/s0021663560375

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

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

FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, vol.356, no.6, pp.375-377, 1996 (SCI-Expanded)

Publication Type: Article / Article
Volume: 356 Issue: 6
Publication Date: 1996
Doi Number: 10.1007/s0021663560375
Journal Name: FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.375-377
Istanbul Technical University Affiliated: No

Abstract

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.