Extraction of organic acids by ion-pair extraction with tri-n-octylamine - VIII. Identification of synthetic dyes in pharmaceutical preparations.
Synthetic dyes were extracted from syrups, oral suspensions, tablets, gelatin capsules, suppositories and granules by ion-pair formation with tri-n-octylamine (TnOA) and back-extracted with perchlorate ions. Identification was performed by TLC on cellulose layers and by reversed phase ion-pair HPLC.
Puttemans
M L
ML
Farmaceutisch Instituut, Vrije Universiteit Brussel, Laarbeeklaan 103, 1090 Brussels, Belgium.
Dryon
L
L
Massart
D L
DL