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  • Title: Home produced eggs: An important pathway of human exposure to perfluorobutanoic acid (PFBA) and perfluorooctanoic acid (PFOA) around a fluorochemical industrial park in China.
    Author: Su H, Shi Y, Lu Y, Wang P, Zhang M, Sweetman A, Jones K, Johnson A.
    Journal: Environ Int; 2017 Apr; 101():1-6. PubMed ID: 28135695.
    Abstract:
    Dietary intake is considered to be a major pathway of human exposure to perfluoroalkyl acids (PFAAs). Chicken egg is an important contributor to the Chinese diet. In the present study, PFAAs in home produced eggs (HPEs) and commercially produced eggs (CPEs) surrounding a fluorochemical industrial park (FIP) in China were investigated. PFAAs in HPEs decreased with increasing distance from the FIP. HPEs were much more contaminated than CPEs, with PFAAs in CPEs comparable to or lower than those in HPEs from 20km away from the FIP. PFOA concentrations in HPEs were higher than the levels of PFOA in eggs from other studies reported so far. For the first time, PFBA was reported in eggs and detected in all egg samples. PFOA and PFBA were the predominant forms in HPEs, while PFOA, PFBA and PFOS dominated in CPEs. For PFOA, estimated daily intakes (EDI) were 233ng/kg·bw/day for adults and 657ng/kg·bw/day for children who consume HPEs at households about 2km away from the FIP. The EDI of PFOA for children via HPEs exceeded the reference dose value (333ng/kg·bw/day) proposed by the Environmental Working Group.
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