CHANGES OF PCBS, PBDES AND HBCD IN BREAST MILK DURING UP TO TEN MONTHS OF LACTATION

摘要

Eight primiparous mothers and one mother breast feeding her second child collected breast milk samples monthly from from about two weeks after birth to up to ten months (n = 67). Seventeen polychlorinated biphenyls (PCBs), 12 polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCD) were determined in the breast milk samples. Both PCBs, PBDEs and HBCD breast milk concentrations were found to change little throughout the lactation period, while the levels of BDE-209 were more variable. The concentrations measured were in close agreement with what has been found in other studies in Norway. For the secondiparous mother, breast milk PBDE concentrations were almost exactly the same as those found during nursing of her first child. The PCB levels on the other hand, were somewhat lower during the second breast feeding period.