1 Division of Food Chemistry, National Food Institute, Technical University of Denmark2 National Food Institute, Technical University of Denmark3 National Veterinary Institute, Technical University of Denmark
Arsenite, arsenate, monomethylarsonate, dimethylarsinate, arsenobetaine, arsenocholine and the tetramethylarsonium ion were subjected to ion-exchange and ion-pair reversed phase HPLC. The ion exchange method was superior in selectivity and time of analysis for the arsenic anions. The ammonium ions used for the ion-pair method only resulted in separation of some of the anionic arsenic compounds. Flame atomic absorption spectrometry was used for on-line arsenic-specific detection.
Microchimica Acta, 1992, Vol 109, Issue 1-4, p. 47-51