tailieunhanh - Báo cáo nghiên cứu khoa học: "Dư lượng thuốc trừ sâu, biphenyl có trong sữa ở thừa thiên huế Việt Nam"

Tuyển tập báo cáo nghiên cứu khoa học trường đại học huế đề tài: Dư lượng thuốc trừ sâu, biphenyl có trong sữa ở thừa thiên huế Việt Nam. | JOURNAL OF SCIENCE Hue University N0 61 2010 ORGANOCHLORINE PESTICIDES AND POLYCHLORINATED BIPHENYLS IN HUMAN BREAST MILK IN THE SUBURBS OF HUE CITY VIET NAM PRELIMINARY RESULTS Hoang Trong Si Nguyen Thanh Gia College of Medicine and Pharmacy Hue University Nguyen Van Hop Thuy Chau To Nguyen Dang Giang Chau Le Thi Huynh Nhu College of Sciences Hue University SUMMARY The organochlorine compounds OCs such as organochlorine pesticides OCPs and polychlorinated biphenyls PCBs can accumulate in breast milk through the food chain. Human milk is a suitable bio-monitoring source to assess the burden of disease by these compounds in humans. In this study human breast milk samples were collected from 30 lactating mothers who were farmers and 10 samples from lactating mothers who were not farmers living in suburban communes of Hue city during 2010. Questionnaires on lifestyle factors dietary aspects past disease family history occupation and past and current exposure to pesticides were asked. The concentrations of OCPs as dichlorodiphenyltrichloroethane and its metabolites DDTs hexachlorocyclohexane isomers HCHs and polychlorinated biphenyls congeners PCBs were quantified by gas chromatoghraphy with micro electron capture detector GC-pECD . Results are reported on milk fat basis. DDTs and HCHs were detected in all breast milk samples. PCBs were detected in some breast milk samples. There was no significant difference in levels of OCPs and PCBs between lactating mothers who were farmers or not farmers. The levels of DDTs HCHs and PCBs in the breast milk samples were found to correlate positively with the age of the mothers. Keywords OCs DDTs HCHs PCBs Human breast milk Vietnam 1. Introduction There are some plant protecting chemicals as organochlorine compounds OCs two of them are DDT diclodiphenyltricloetan and HCH hexacloxyclohexan . They belong to a group of 12 persistent organic pollutants POPs which are the most dangerous chemicals for environmental and human health. DDT .