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Sources of Low Concentrations of Bisphenol A in Canned Beverage Products

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Although migration from can coatings is likely the source of bisphenol A (BPA) for the canned soft drink products with relatively high BPA concentrations, questions have been raised concerning the exact sources of BPA for those canned soft drink products with low BPA concentrations. Information is also needed for BPA concentrations in canned beer products to conduct proper exposure assessment for BPA under the Government of Canada's Chemicals Management Plan. In this work, 22 soft drink samples and 16 beer samples in both cans and plastic and/or glass bottles were analyzed for BPA. BPA was not detected in any of the soft drink samples in either plastic or glass bottles except for one product with a BPA concentration (0.018 μg/liter) close to the limit of quantification (0.015 μg/liter). BPA was detected in all of the corresponding soft drink products in cans, indicating that migration from can coatings is the likely source for BPA in canned products. Because considerable interference with ions m/z 213 and m/z 228 from sample matrices was observed for all beer samples, BPA concentrations in beer samples were measured using the ion m/z 270 instead. BPA was detected in only one of the seven beer products in glass bottles (0.054 μg/liter) but was detected in all corresponding beer samples in cans at low concentrations ranging from 0.081 to 0.54 μg/liter, indicating that migration from can coatings is likely the source of BPA in canned beer products.

Document Type: Research Article

Affiliations: Food Research Division, Bureau of Chemical Safety, Food Directorate, Health Canada, 251 Frederick Banting Driveway, AL: 2203D, Ottawa, Ontario, Canada K1A 0K9

Publication date: August 1, 2010

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