Separation of selected anticancer drugs using superheated water as the mobile phase
T Teutenberg1, O Lerch, H J Götze
1Department of Analytical Chemistry, Ruhr-University Bochum, Germany. teutenberg@anachem.ruhr-unibochum.de
Abstract:
Six anticancer drugs have been eluted on a polystyrene-divinylbenzene (PS-DVB) column with buffered superheated water as the mobile phase. The temperature range studied was from ambient temperature up to 160 degrees C, and the pH of the water was adjusted to 11.5 and 3.5 with phosphate buffer. It was possible to separate the substances 5-fluorouracil (5-FU), methotrexate (MTX), 7-hydroxymethotrexate (7-OH-MTX), and etoposide (VP-16) in one chromatographic run. The separation of these substances was optimized when adjusting the pH from 11.5 to 3.5, resulting in a total elution time of less than 13 min. Furthermore, retention factors of all of the investigated substances were measured at different temperatures and pH values.
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