Simultaneous determination of Cr(III)-EDTA and Cr(VI) by ion interaction chromatography using a C18 column.

@article{Threeprom2005SimultaneousDO,
  title={Simultaneous determination of Cr(III)-EDTA and Cr(VI) by ion interaction chromatography using a C18 column.},
  author={Jirasak Threeprom and Sumalee Purachaka and Lamfa Potipan},
  journal={Journal of chromatography. A},
  year={2005},
  volume={1073 1-2},
  pages={291-5}
}
The simultaneous determination of Cr(III) and Cr(VI) by ion interaction chromatography has been investigated. The mobile phase consisted of a 5 mM octylammonium orthophosphate at pH 4.0 with 35% (v/v) MeOH. The Nucleosil-100, C18 (5 microm, 250 x 4.6 mm) was used as the separating column and the component was detected at 200 nm. The separation of Cr(III) and Cr(VI) was based on anionic interaction. Since the Cr(III) did not exist as an anionic form like the Cr(VI) (Cr2O7(2-)) presented at the… CONTINUE READING