Simultaneous determination of Cr(III) and Cr(VI) in water by reversed phase HPLC, after chelating with sodium diethyldithiocarbamate

A method is described for simultaneous determination of trivalent and hexavalent chromium. The sample is buffered to pH 5.8 and allowed to react overnight at room temperature with 5 per cent sodium diethyldithiocarbamate. It is then extracted with chloroform and analysed by reversed-phase high perfo...

Full description

Saved in:
Bibliographic Details
Published in:Chromatographia 1980-10, Vol.13 (10), p.607-610
Main Authors: Tande, T., Pettersen, J. E., Torgrimsen, T.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A method is described for simultaneous determination of trivalent and hexavalent chromium. The sample is buffered to pH 5.8 and allowed to react overnight at room temperature with 5 per cent sodium diethyldithiocarbamate. It is then extracted with chloroform and analysed by reversed-phase high performance liquid chromatography, after the residue from evaporation of the chloroform has been dissolved in acetonitrile, using methanol:water (65:35) as mobile phase. Detection was by UV at 254 nm. Corrections were made for interference between Cr(III) and Cr(VI) and concentrations of 2-10 ug per cm3 of each ion were determined with accuracies of the order of plus or minus 5 per cent.
ISSN:0009-5893
1612-1112
DOI:10.1007/BF02302460