Simultaneous determination of chromium(III) and chromium(VI) in aqueous solutions by ion chromatography and chemiluminescence detection
Research output: Contribution to journal › Journal article › Research › peer-review
A method for the simultaneous determination of chromium(iii) and chromium(vi) in a flow system based on chemiluminescence was developed. A Dionex cation-exchange guard column was used to separate chromium(iii) from chromium(vi), and chromium(vi) was reduced by potassium sulfite, whereupon both species were detected by use of the luminol-hydrogen peroxide chemiluminescence system. Linear calibration for both species was established over the concentration range 1-1000 micrograms l-1. The precision at the 20 micrograms l-1 level was 3.5% for chromium(iii) and 3.3% for chromium(vi), respectively. The detection limit was 0.5 micrograms l-1 for both species. Data were in agreement with Zeeman-effect background corrected atomic absorption spectrometry measurements.
Original language | English |
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Journal | Analyst |
Volume | 117 |
Issue number | 3 |
Pages (from-to) | 637-40 |
Number of pages | 4 |
ISSN | 0003-2654 |
Publication status | Published - 1992 |
- Chromatography, High Pressure Liquid, Chromium, Luminescence, Solutions, Trace Elements, Water
Research areas
ID: 44053573