[PCBs concentrations in human milk collected from a polluted area--exposure risk for feeding infants].
OBJECTIVE
To determine the concentration of PCBs and the distribution of dioxin-like compounds in human milk collected from a polluted area where discarded electronic equipment is dismantled, and to evaluate the risk for feeding infants.


METHODS
The authors collected 20 and 12 milk samples from the polluted area and nearby town, respectively. Milk samples were analyzed for total PCBs (t-PCBs) by gas chromatography, and two mixed milk samples from the two areas were detected the distribution of dioxin-like compounds.


RESULTS
t-PCBs in human milks of polluted area and control area were 0.39 - 3.92 microg/g fat and 0.46 microg/g (only one sample was detectable), respectively. The TEQ of PCB126 contribute to total TEQ of dioxin-like compounds was similar to other countries and regions. The TEQs of PCBs of the polluted and control area were 59 pg/g fat and 6 pg/g fat, respectively.


CONCLUSIONS
The TEQ of PCBs of polluted area was much higher than other countries and regions, and the dioxin-like compounds intake of infants was much higher than the Tolerable Daily Intake (TDI) for dioxin recommended by WHO.
Xu
Cheng-Min
CM
Institute of Hygiene, Zhejiang Academy of Medical Science, Hangzhou 310013, China.
Yu
Su-Xia
SX
Jiang
Shi-Xi
SX
Wu
Nan-Xiang
NX
Zhang
Xing
X
D000328:Adult; D002849:Chromatography, Gas; D004781:Environmental Exposure / Q000032:analysis*; D004785:Environmental Pollutants / Q000032:analysis*; D005260:Female; D006801:Humans; D008895:Milk, Human / Q000737:chemistry*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D018570:Risk Assessment
D004785:Environmental Pollutants; D011078:Polychlorinated Biphenyls