Concentrations of PCDD/PCDFs and PCBs in retail foods and an assessment of dietary intake for local population of Shenzhen in China.
OBJECTIVE
Concentrations of 17 polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and 18 polychlorinated biphenyls (PCBs) were measured in 11 varieties of food groups collected from retail market of Shenzhen, Guangdong province, China from 2004 to 2006. PCDD/Fs and PCBs dietary intake from varies food for the local population was estimated in the study.


METHODS
Concentrations of 17 polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) and 12 dioxin-like polychlorinated biphenyls (PCBs) as well as 6 marker PCBs were measured in 11 varieties of food groups in total 110 food samples by isotope dilution HRGC/HRMS. PCDD/Fs and PCBs dietary intake for local population was estimated using total WHO-TEQ concentration and different food consumption amount of the local population.


RESULTS
The median WHO-TEQ concentrations of sum of PCDD/Fs and DL-PCBs varied from 0.0093 pg/g (parts per trillion) in vegetable to 9.89 pg/g in fish. Fish was followed by egg 2.46, chicken 1.73, beef 0.94, mutton 0.82, duck 0.39, pork 0.37, milk powder 0.25, vegetable oil 0.076, cereals 0.022 pg/g and vegetable. The monthly intake of PCDD/Fs and PCBs were 40.9 pg WHO-TEQ/kg b.w. for local population. Sum of fish, livestock, and poultry contributed 77% to the Estimated Monthly Intake (EMI) in local population.


CONCLUSIONS
Estimated dietary intake of PCDD/Fs and DL-PCBs for local population was below the provisional tolerable monthly intake(PTMI) set by Joint FAO/WHO Expert Committee on Food Additives (JECFA).
Zhang
Jianqing
J
Shenzhen Center for Disease Control and Prevention, No. 21, 1st road Tianbei, Luohu district, Shenzhen, Guangdong, PR China. jianqingzh@hotmail.com
Jiang
Yousheng
Y
Zhou
Jian
J
Fang
Daokui
D
Jiang
Jie
J
Liu
Guihua
G
Zhang
Hongyu
H
Xie
Jianbin
J
Huang
Wei
W
Zhang
Jinzhou
J
Li
Hui
H
Wang
Zhou
Z
Pan
Liubo
L
D001572:Benzofurans / Q000032:analysis*; D002681:China; D004032:Diet; D004781:Environmental Exposure / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis*; D006801:Humans; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis
D001572:Benzofurans; D000072317:Polychlorinated Dibenzodioxins; C023614:dibenzofuran; D011078:Polychlorinated Biphenyls