초록
HRGC/ECD를 이용한 congener specific analysis 방법으로 국내 유통식품 중 PCBs의 오염실태를 조사하였다. Indicator PCB인 IUPAC #28, #52, #101, #118, #138, #153 및 #180 7종을 대상물질로 하였으며, 소고기, 돼지고기, 닭고기, 계란, 고등어, 조기, 멸치, 오징어, 바지락을 대상시료로 선정하여 서울, 부산, 광주 3개 지역에서 수집하였다. 채취한 시료는 균질화하여 알칼리 분해후 유기용매로 추출하여 지방을 분해하고 실리카겔 컬럼으로 정제하여 dual column-HRGC/ECD로 분석하였으며 검출된 시료에 대해서는 HRGC/MSD로 재확인하였다. 분석결과 고등어 등 어류 시료에서 미량수준 (0.0002~0.001 mg/kg)의 PCBs가 검출되었으며 주요 검출물질은 PCB #101과 PCB #118이었다.
To determine levels of PCBs in food, beef, pork, chicken, egg, mackerel, yellow croaker, anchovy, common squid and little neck clam were chosen and collected at markets in Seoul, Busan and Kwangju. Among 209 PCB congeners, 7 congeners (#28, #52, #101, #118, #138, #153 and #180) were selected as target compounds that were known as indicator congeners. Samples were homogenized, treated in alkali solution for 1 hour, and extracted with organic solvents. After extraction, extracts were cleaned up by sulfuric acid, purified on silica gel column chromatography, analyzed by dual column-HRGC/ECD and then confirmed by HRGC/MSD. As results, PCBs were detected in fish samples ranged from 0.0002 to 0.001 mg/kg. Both PCB #101 and PCB #118 were the major contributors among 7 congeners.
