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Dioxin contamination on agroproducts is one of themost important issue in food safety. Herein, we measuredconcentration of 17 dioxins polychlorinated dibenzo-p-dioxins(PCDDs) and polychlorinated dibenzofurans (PCDFs) and 14dioxin like-polychlorinated biphenyls (DL-PCBs) in the maingrain (rice and barley) that were produced in Korea. The 36 ricesamples were collected from rice processing complex at eightprovinces, and the average concentrations of each province wereranged from 2.98 pg/g wet weight (w.w) to 4.98 pg/g w.w. as totalPCDD/Fs and DL-PCBs. The seven barley samples were collectedfrom Jeon-nam and Jeon-buk provinces, and their average totalconcentrations of PCDD/Fs and DL-PCBs were 3.00 pg/g w.w.and 3.24 pg/g w.w. respectively. The residual amounts and toxicequivalent (TEQ) of DL-PCBs in rice and barley were higher thanPCDD/Fs. The average total TEQ of rice and barley were 0.0056pg-TEQ/g and 0.0092 pg-TEQ/g on lower bound estimationrespectively. Estimated daily intake of dioxins from rice andbarley were calculated 1.03 pg-TEQ/day/person and 0.0534 pg-TEQ/day/person respectively. These were estimated 0.46% and0.03% of Korean TDI based on 55 kg body weight.Keywords grain · Korea · polychlorinated biphenyls · polychlorinated dibenzo-p-dioxions · polychlorinated dibenzofurans서론스톡홀름협약을 통해 지정되는 잔류성 유기오염물질(Persistentorganic pollutants, POPs)은 14종의 사용금지 농약류와 다이옥신류, 과불화합물 등 2011년까지 총 22종의 유해화학물질이 선정되어 의도적인 생산 또는 발생을 저감화하거나 근절하기 위해 엄격히 관리되고 있다. 특히 이들 중 다이옥신류로 분류된polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinateddibenzofurans (PCDFs) 그리고 dioxin-like polychlorinated biphenyls(DL-PCBs) 는 높은 환경 잔류성, 생물 농축성 및 독성문제 등으로 인해 환경뿐만 아니라 농식품에서도 잔류문제가 사회적으로 크게 대두되고 있다(Parzefall 등, 2002; Grassi 등, 2010;Moon 등, 2010). 특히 다이옥신류의 지용성 특성으로 인해 육류, 어류등 고지방함유 식품에 대한 잔류 위험성이 제기됨에 따라, 전 세계적으로 육류를 비롯한 고지방함유 농수축산물에 대한 잔류분석 모니터링 연구가 꾸준히 진행되고 있다(Bernard 등 |
