A study on the levels of a polybrominated biphenyl in Chinese human milk samples collected in 2007 and 2011
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The levels of a 2,2′,4,4′,5,5′-hexabromobiphenyl (BB-153) were measured in human milk samples collected in 2007 and 2011 from residents in China by high-resolution gas chromatography–high-resolution mass chromatography (HRGC–HRMS) with isotope dilution. The median concentrations of BB-153 from the samples collected in 2007 and 2011 were 8.3 and 7.2 pg/g lipid weight, respectively. The levels of BB-153 in the human milk collected from rural areas were not significantly different to those collected from the urban areas in China. Meanwhile, significant positive correlations were found between the levels of BB-153 in human milk and the consumption of animal-origin foods. In the present study, the mean levels of BB-153 in human milk from Chinese mothers were found to be lower than those from European and American mothers.
KeywordsHexabromobiphenyl BB-153 Human milk Brominated flame retardants
We would like to express our gratitude to all the volunteers in this study. This research was supported by the National Nature Science of Foundation of China (Grant No. 21407033 and No. 21361140359) and Strategic Priority Research Program of the Chinese Academy of Sciences (XDB01020300) and Hubei Provincial Centre for Disease Control and Prevention funded project (Y2013W07).
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