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소개 및 활동/사업
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09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능
제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내
Hexabromocyclododecane (HBCD) Diastereoisomers in meat from Korean markets
2015년 9월 3일 13시 22분 35초
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10월 15일 (목요일) 11:00~12:30
포항공과대학교(POSTECH) 환경공학부, Korea
Hexabromocyclododecane (HBCD) is a brominated flame retardant used in polystyrene foams in thermal solution and electrical equipment. The HBCD commercial mixture consists mainly of γ-HBCD (70%) and two other diastereoisomers in lower amounts: β- and α-HBCD 16% and 13% respectively. HBCD has recently been adopted for addition to Annex A of Stockholm convention. The presence of HBCD in wide range of matrices, its suspected toxic effects and continuous massive use may indicate a public health concern. One of the many sources of human exposure to HBCD is through diet. Similar to other POPs it is expected that consumption of fish and meat are two important pathways of human oral exposure. However, in this research the HBCD concentration in meat samples were investigated due to higher consumption in Korean population in comparison with fish product. Little information is available regarding HBCD level in meat and to our knowledge this is the first study to determine the HBCD diastereoisomers in meat samples in Korea. In this study, a total of 59 meat samples were collected from local market and department stores of 5 cities in Korea. Concentrations of HBCD diastereoisomers were determined by liquid chromatography?tandem mass spectrometry (LC?ESI-MS/MS). α-HBCD was the predominant diastereoisomer in 90% of the meat samples. It has to be noted that the diastromeric distribution of HBCD can change due to bioisomerization and biotransformation in biological materials. The concentration was higher in pork (139 pg/g ww) than beef (110 pg/g ww), however, the difference was not significant. Levels of HBCD diastereoisomers found in Korean meat samples were relatively low in comparison with food samples from other countries.
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