Risk assessment of dietary exposure to PCDD/Fs, DL-PCBs and NDL-PCBs of Hong Kong resident

Weiguang Xu, Zongwei Cai*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

17 Citations (Scopus)


Concentrations of PCDD/Fs, dioxin-like PCBs as well as six indicator PCBs were determined in animal origin foods collected from Hong Kong retail market during 2008-2010. The dietary intake of an average Hong Kong adult resident was estimated to be 0.806-0.833 pg WHO-TEQ kg-1 b.w. d-1 of dioxin-like compounds, lower than the tolerable daily intake introduced by WHO. The 95th percentile consumer were exposed by dietary at the level of 2.72 to 2.81 pg WHO-TEQ kg-1 b.w. d-1 or 81.6-84.3 pg WHO-TEQ kg-1 b.w. month-1, higher than 70 pg WHO-TEQ kg-1 b.w. month-1. DL-PCBs contributed 49.2% of total TEQ intake. The daily intake of indicator PCB was 2.83 ng kg-1 b.w. d-1. Approximately 2/3 of dietary intake of dioxin-like compounds came from sea food products. Ten brands of infant formula products were tested and the potential dietary intake of formula-fed infants of Hong Kong was estimated to be 1.46-1.58 pg WHO-TEQ kg-1 b.w. d-1 during 1st month and decreases afterwards.

Original languageEnglish
Pages (from-to)1082-1088
Number of pages7
JournalScience China Chemistry
Issue number6
Publication statusPublished - 30 Jun 2015

Scopus Subject Areas

  • Chemistry(all)

User-Defined Keywords

  • dietary intake
  • food
  • PCBs
  • PCDD/Fs


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