Determination of Bisphenol A in Canned Foods by Immunoaffinity Chromatography,HPLC,and Fluorescence Detection

摘要

Bisphenol A(BPA)concentrations were determined in canned beverages,fruits,vegetables,and fat-containing foodstuffs bought in Austrian supermarkets.The analysis method consisted of sol-gel immunoaffinity Chromatography followed by high-performance liquid Chromatography with fluorescence detection.With one exception traces of BPA were detected in all samples.BPA recovery strongly depended on the food matrix,ranging from 27% in goulash to 103% in a lemon soft drink.The results obtained allow a more realistic picture of the BPA exposure caused by cans with an epoxy resin protective coating because-in contrast to several previous studies-only those fractions of the can contents that are actually consumed were analyzed.BPA concentrations ranging from 0.1 ng/mL(lemon soft drink)to 38 ng/g(ready-to eat soup from Thailand)were significantly lower than the European Union migration limit of 0.6 mg of BPA/kg of food.