한국과 캐나다산 치즈중 PCBs의 농도 특성
PCBs concentration patterns in Korean and Canadan cheese
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한국과 캐나다에서 생산된 우유로 제조된 치즈를 슈퍼마켓에서 구매하여(한국 5종, 캐나다 10종) 치즈에 포함된 총 209 PCBs congener 농도와 homologue별 농도 양상을 연구하였다.한국과 캐나다산 치즈중 PCBs 총농도는 각각 299.81과 200.96(pg/g w.w.)으로 한국산 치즈중 PCBs 농도가 캐나다산 치즈보다 1.5배 더 높았다. 그러나 TEQ 농도는 한국산과 캐나다산이 각각 0.0067과 0.0064(pg-TEQ/g w.w.)으로 거의 같았으며, PCDD/Fs는 전혀 검출이 되지 않았다. 한국과 캐나다산 치즈에서 검출된 PCBs와 PCDD/Fs 농도는 세계 다른 지역에서 제조된 치즈중 농도보다 훨씬 낮았다. 두 나라의 치즈에서 검출된 PCBs congener수는 한국산이 93종, 캐나다산이 83종으로 한국산 치즈에서 10종 더 많은 PCBs congener가 검출되었다. 두 나라 치즈중 각 PCBs congener 농도에서 구한 회귀직선의 결정계수(R2)는 0.752로 상관성이 커서 두 나라의 PCBs 발생원이 유사함을 알 수 있었고, 각 homologue별 농도 분포도 유사성이 컸다.
Abstract
All 209 PCB congeners were analyzed in cheese produced in Korea and Canada. 5 Korean and 10 Canadian cheeses were purchased in supermarket in their native countries. 93 PCB congeners were found in Korean cheese; 83 congeners were detected in Canadian cheese. Total PCB concentrations were 299.81 and 200.96 pg/g w.w. in Korean and Canadian cheeses respectively; PCB concentration was 1.5 times higher in Korean than Canadian cheese. Korean TEQ concentration (0.0067 pg-TEQ/g w.w.) in cheese was similar to in Canadian cheese (0.0064 pg-TEQ/g w.w.). These PCB concentrations range was low level compared with that of other cheeses globally. The correlation coefficient (R2) of regression was high (0.752) between each PCB congener concentration in both Korean and Canadian cheese.
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