식품 중 총 PCBs의 분석 및 노출량 평가

Total PCBs (62 congeners) has been determined in the retailed foods by the isotopic dilution method and the exposure assessment has been performed. Put into a food sample $^{13}C$-labeled standard for recovery was added and then it was extracted, cleaned-up by multi-layer column chromatography and then analyzed by HRGC/MS. The average levels (ng/g) detected was 0.1 for rice, 1.8~3.4 for meats, 0.3~3.7 for milk and dairy products, 10.0 for egg and 0.8~34.4 for fishes. Distribution of total PCBs was in order of fishes (94.4%) > meats (2.3%) > eggs (1.7%) > milk and dairy products (1.3%) > rice (0.3%). The estimated daily intake(EDI) was 14 ng/kg bw/day. It was concluded that there was no health risk at all. 국내에 유통 중인 식품을 대상으로 PCBs 62종 동족체를 동위원소희석법으로 분석하고 노출평가를 실시하였다. 시료에 $^{13}C$-labeled된 회수율 측정용 표준용액을 가하여 추출하고 다층 칼럼 크로마토그래피로 정제하여 HRGC/MSD로 분석하였다. 식품 중 평균 검출량(ng/g)은 쌀 0.13, 육류 1.8~3.4, 우유 및 유가공품 0.3~3.7, 계란 10.0, 수산물 0.8~34.4 이었다. 식품군별 검출분포는 수산물(94.4%) >육류 (2.3%) >알류(1.7%) > 우유 및 유가공품(1.3%) >쌀(0.3%) 순이었다. 식품을 통한 총 PCBs의 1일 노출량은 14.5 ng/kg bw/day로 건강상 안전한 것으로 평가되었다.