Dietary Exposure to Perfluorooctanoic Acid and Perfluorooctanesulfonic Acid through Disposable Carboard Cups

In order to evaluate the dietary intake risk of PFOA and PFOS through disposable carboard cups for different groups of people,liquid chromatography-tandem mass spectrometry(LC-MS/MS)method was used to determine the migration amount of perfluorooctanoic acid(PFOA)and perfluorooctanesulfonic acid(PFOS)from disposable carboard cups to foods,and the disposable carboard cups consumption data of different groups were investigated. The results showed that migration amounts of PFOA and PFOS from 20 brands of carboard cups to foods were ND~23.70×10^-3 ng/cm²,ND~4.10×10^-3 ng/cm²,respectively. The acute exposure of PFOA was 45.67×10^-3~168.36×10^-3 ng/(kg·d),and the acute exposure of PFOS was 7.91×10^-3~29.14×10^-3 ng/(kg·d). 0.16×10^-3~4.05×10^-3 ng/(kg·d)and 0.02×10^-3~0.51×10^-3 ng/(kg·d)were the chronic exposure for PFOA and PFOS. The acute and chronic exposure levels of PFOA and PFOS were far below the tolerable daily intakes established by the Scientific Panel on Contaminants in the Food Chain of the European Union. The dietary intake risks of PFOA and PFOS through consumption of disposable carboard cups for different age groups and genders were acceptable.