Online preconcentration of arsenic compounds by dynamic pH junction-capillary electrophoresis.

@article{Ambavaram2007OnlinePO,
  title={Online preconcentration of arsenic compounds by dynamic pH junction-capillary electrophoresis.},
  author={Vijaya Bhaskar Reddy Ambavaram and Zildawarni Irwan and Rahmalan Ahamad and Shigeru Terabe and Tohru Ikegami and Nobuo Tanaka},
  journal={Journal of separation science},
  year={2007},
  volume={30 3},
  pages={391-8}
}
An online preconcentration technique by dynamic pH junction was studied to improve the detection limit for anionic arsenic compounds by CE. The main target compound is roxarsone, or 3-nitro-4-hydroxyphenylarsonic acid, which is being used as an animal feed additive. The other inorganic and organoarsenic compounds studied are the possible biotransformation products of roxarsone. The arsenic species were separated by a dynamic pH junction in a fused-silica capillary using 15 mM phosphate buffer… CONTINUE READING