Fig. 1.
HPLC analysis of BPA mixed in food. BPA was extracted by organic solvent (3 times with hexane and 2 times with diethyl ether: n-hexane = 1:1) from freshly prepared BPA-containing food or stored for one year. Extracted compounds were dissolved in ethanol and analyzed by HPLC. Standard BPA dissolved in ethanol showed a peak at approximately 50% of acetonitrile (A). A corresponding peak was detected in extracts from freshly prepared BPA-containing food (B) and one-year-old food (C).
