title: Risk assessments of human exposure to bioaccessible phthalate esters through market fish consumption.
abstract: The bioaccessibility of phthalate esters in 20 fish species collected from Hong Kong market was evaluated using an in vitro gastrointestinal model. The ∑phthalate ester concentration detected in fresh water fish ranged from 1.66 to 3.14μg/g wet weight (ww) and in marine fish ranged from 1.57 to 7.10μg/g ww, respectively. di-2-Ethylhexyl phthalate (DEHP) and di-n-butyl phthalate (DBP) were the predominant compounds in both freshwater fish and marine fish. The digestible concentrations of phthalate esters ranged from 0.20 to 1.23μg/g ww (mean 0.35μg/g ww), and account for 2.44 to 45.5% (mean 16.8%) for raw concentrations of phthalate esters. In the present study, the accumulation ratio Rnn value of all phthalate esters was greater than 1 except for diisobutyl phthalate (DIBP), DBP and di-n-hexyl phthalate (DHP), suggesting that these phthalate esters could be accumulated during gastrointestinal digestion. Based on this health risk assessment, most of fish species were considered safe for consumption, however Hong Kong residents should take caution when consuming Mud carp and Bighead carp.
authors.affiliation: State Key Laboratory on Marine Pollution, Croucher Institute for Environmental Sciences, Hong Kong Baptist University and City University of Hong Kong, Kowloon Tong, Hong Kong, China.
authors.forename: Zhang
authors.initials: Z
authors.lastname: Cheng
authors.forename: Xiang-Ping
authors.initials: XP
authors.lastname: Nie
authors.forename: Hong-Sheng
authors.initials: HS
authors.lastname: Wang
authors.forename: Ming-Hung
authors.initials: MH
authors.lastname: Wong
mesh_terms: D000818:Animals; D003993:Dibutyl Phthalate / Q000031:analogs & derivatives / Q000032:analysis; D004032:Diet / Q000706:statistics & numerical data*; D004051:Diethylhexyl Phthalate / Q000032:analysis; D004781:Environmental Exposure / Q000706:statistics & numerical data*; D005399:Fishes; D005618:Fresh Water; D006723:Hong Kong; D006801:Humans; D010795:Phthalic Acids / Q000032:analysis*; D018570:Risk Assessment; D017747:Seafood / Q000032:analysis* / Q000706:statistics & numerical data
chemical_list: D010795:Phthalic Acids; D003993:Dibutyl Phthalate; D004051:Diethylhexyl Phthalate; C025605:diisobutyl phthalate