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Abstract
Sea fish consuming is an important intake source of dioxin-like compounds, especially
for the coastal residents. To assess the intake levels of these contaminants from
sea fish and to provide risk-based consumption advice, concentrations of 17 polychlorinated
dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and 12 dioxin-like polychlorinated biphenyls
(dl-PCBs) were measured in 32 commonly consumed fish species from Zhoushan Fishery,
China. Due to the different accumulation influenced by fat content, feed habits and
living zone in the sea area, the levels of PCDDs, PCDFs and dl-PCBs in different fish
species varied significantly ranging from 0.002 to 0.078pg WHO-TEQ/g fresh weight,
from 0.002 to 0.553pg WHO-TEQ/g fresh weight and from 0.003 to 2.059pg WHO-TEQ/g fresh
weight, respectively. Based on mean fish consuming rate in China, the estimated maximum
possible dioxin-like compounds intake through different fish species ranged from 0.26
to 65.61pgTEQkg(-1)bwmonth(-1). Bullet mackerel has the highest monthly intake level
which was much higher than other fish species and very close to the provisional tolerable
monthly intake (70pgTEQkg(-)(1)bwmonth(-)(1)) proposed by the Joint FAO/WHO Expert
Committee on Food Additives. Hence, comparing to other fish species, the consumption
of Bullet mackerel from Zhoushan Fishery should be cautious to reduce the potential
health risk.