Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5745854 | Chemosphere | 2017 | 7 Pages |
â¢PBDEs and indicator PCBs were measured in a national survey of breast milk.â¢There was reduction of BDE-47, 99, 100, 153 in human milk from 2007 to 2011.â¢Notable increase was observed for BDE-183 in most regions of China.â¢A significant decline in total indicator PCBs with an average reduction of 41%.
Seven congeners of polybrominated diphenyl ethers (PBDEs) (BDE-28, BDE-47, BDE-99, BDE-100, BDE-153,BDE-154 and BDE-183) and six indicator polychlorinated biphenyls (PCBs) (PCB-28, PCB-52, PCB-101, PCB-138, PCB-153 and PCB-180) were measured in 32 regional pooled human milk samples originating from 1760 volunteering primiparous mothers to evaluate the current human body burden of general population and the temporal trend in China. Individual human milk samples were collected following a WHO-designed procedure. This work is one of parts of the evaluation of effectiveness of Stockholm Convention performance. The concentration of â7PBDEs ranged from 0.3 ng gâ1 lipid to 4.0 ng gâ1 lipid with a mean of 1.5 ng gâ1 lipid. The concentration of â6PCBs ranged from 2.3 ng gâ1 lipid to 19.0 ng gâ1 lipid with a mean of 6.6 ng gâ1 lipid. By comparing with background determination in 2007, there was no significance for â7PBDEs. However, BDE-47, BDE-99, and BDE-100 significantly decreased with an average of 45%, 48%, and 46%, respectively, from 2007 to 2011, and an increase of BDE-183 was founded in most regions. For â6PCBs, there was a significant decline with an average reduction of 41% from 2007 to 2011. These results indicate the effectiveness of reduction and elimination of POPs in China. Future national human milk biomonitoring is worthy to be done to further evaluate the time trend and effectiveness of the Convention performance.