title: Polycyclic aromatic hydrocarbons in animal-based foods from Shanghai: bioaccessibility and dietary exposure.
abstract: A total of 175 samples of 18 types of food were collected from markets in Shanghai, China, and the concentrations and bioaccessibility of 15 priority-controlled polycyclic aromatic hydrocarbons (PAHs) in these samples were determined. The mean concentrations of PAHs varied between 2.4 and 47.1 ng g(-1) wet weight, with the highest being observed in snail and lowest in chicken. The concentrations were lower than the maximum levels of PAH allowed for food per EU regulations. Among the PAHs measured, phenanthrene was the predominant one. Most of the PAHs originated from pyrogenic sources, analysed using molecular indices. The mean bioaccessibility of PAHs varied from 29.0% to 61.2% as measured by simulating the human gastrointestinal digestion process. Linear relationships between the bioaccessibility and lipid contents were observed for most PAH congeners. The daily intake of PAHs by an average Shanghai resident was 848 ng day(-1) and decreased to 297 ng day(-1) when the bioaccessibility of PAHs were considered, demonstrating that most intake might have been overestimated. According to the potency equivalent concentrations and screening values of PAHs, consumption of snail and clam, especially snail, should be limited.
authors: Institute of Environmental Pollution and Health, School of Environmental and Chemical Engineering, Shanghai University, Shanghai, P R China. yuyingxin@staff.shu.edu.cn
authors: Ying-Xin
authors: YX
authors: Yu
authors: Liang
authors: L
authors: Chen
authors: Dan
authors: D
authors: Yang
authors: Yu-Ping
authors: YP
authors: Pang
authors: Shao-Huan
authors: SH
authors: Zhang
authors: Xin-Yu
authors: XY
authors: Zhang
authors: Zhi-Qiang
authors: ZQ
authors: Yu
authors: Ming-Hong
authors: MH
authors: Wu
authors: Jia-Mo
authors: JM
authors: Fu
mesh_terms: D000821:Animal Feed / Q000032:analysis*; D001682:Biological Availability; D002681:China; D004032:Diet; D004781:Environmental Exposure; D006801:Humans; D011084:Polycyclic Aromatic Hydrocarbons / Q000008:administration & dosage / Q000032:analysis* / Q000493:pharmacokinetics; D011786:Quality Control; D035501:Uncertainty
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons