Objective: To investigate the pollution level of dioxin-like compounds in animal-derived foods from 10 cities of Shaanxi Province.
Methods: Collect four representative food samples( pork, beef, fish and eggs) to determine the concentrations of29 types of dioxin-like compounds by high-resolution gas chromatographs/high-resolution mass spectrometers( HRGC-HRMS).
Results: The result showed that the toxic equivalent quantity( TEQ) value of dioxin-like compounds in fish was 0. 085 pg TEQ/g, which was the biggest among the 4 food samples. The TEQ values for pork, beef and eggs were 0. 049, 0. 034 and 0. 040 pg TEQ/g, respectively. The TEQ values of dioxin-like compounds were higher in the fish meat of Ankang and the pork of Hanzhoung, but were lower than the max limit of commission regulation European Union. The total dietary intake of the above four foods was 2. 01 pg/( kg·BW·month), which was much lower than the provisional tolerable monthly intake( PTMI) of Joint FAO/WHO Expert Committee on Food Additives 70 pg/( kg·BW·month).
Conclusion: The residents in the 10 cities of Shaanxi Province are at a low health risk caused by the intake of dioxin-like compounds.
Keywords: animal-derived foods; dietary exposure; dioxin-like compounds; toxic equivalent quantity(TEQ).