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Monitoring and Development of Pretreatment Method for Perfluorinated Compounds in Fish Samples

어류에서의 과불화합물 분석을 위한 전처리법 확립 및 모니터링

  • Heo, Jin-Ju (Department of Environmental Engineering, Pusan National University) ;
  • Lee, Ji-Woo (Department of Environmental Engineering, Pusan National University) ;
  • Kim, Seung-Kyu (Department of Marine Science, Incheon National University) ;
  • Oh, Jeong-Eun (Department of Environmental Engineering, Pusan National University)
  • 허진주 (부산대학교 사회환경시스템공학과) ;
  • 이지우 (부산대학교 사회환경시스템공학과) ;
  • 김승규 (인천대학교 해양학과) ;
  • 오정은 (부산대학교 사회환경시스템공학과)
  • Received : 2013.01.11
  • Accepted : 2013.07.04
  • Published : 2013.07.30

Abstract

An efficient extraction method was developed for the analysis of 16 perfluorinated compounds (PFCs) in fish samples. We compared the recoveries from the Ion-Pairing Extraction (IPE), Liquid-Liquid Extraction (LLE), Solid-Phase Extraction (SPE), IPE + SPE method with varying the injection time of the internal standard. As a result, IPE method with the internal standard before extraction was evaluated as the most effective pretreatment method. The RPM (Revolution Per Munite) and pH in IPE-before method were additionally adjusted and the more efficient pretreatment method was established. The total 33 fish samples including liver and gut samples were collected from Korean markets and analyzed PFCs with developed pretreatment method of this study. Total 16 PFC levels in fish samples ranged from ND to 1.67 ng/g with 100% detection frequency. The average PFCs concentrations of muscle, liver and gut samples from fish were compared and showed the following trend: liver (17.8 ng/g) > gut (13.3 ng/g) > muscle (1.67 ng/g). The PFC levels in fish samples were similar or lower than other available previous results of foreign studies.

본 연구에서는 어류에서 16종의 과불화합물을 분석하기 위한 최적 전처리법을 확립하고자 이온쌍 추출법(IPE)과, 액-액 추출법(LLE), 고체상 추출법(SPE), 이온쌍 + 고체상 추출법(IPE + SPE) 각각에 대하여 내부표준물질의 주입 시기를 달리하여 회수율을 비교하였다. 내부표준물질을 추출 전에 주입하는 IPE-before법이 가장 효율적인 전처리법으로 평가되었다. 추가로 RPM 및 pH 테스트를 통해 IPE-before법을 적용한 분석 전처리 효율을 더 개선할 수 있었다. 확립된 전처리법을 이용해 국내 마트에서 구입한 33개의 어류 및 어류의 간과 내장시료에서 과불화합물을 분석하였다. 16종 과불화합물의 검출범위는 ND~1.67 ng/g이었으며, 검출빈도는 100%로 나타났다. 어류의 근육부와 간, 내장을 비교 모니터링 한 결과, 간(17.8 ng/g) > 내장(13.3 ng/g) > 근육부(1.67 ng/g) 순으로 과불화합물이 검출됨을 확인하였다. 국외 선행연구 결과와 비교하였을 때, 본 연구에서의 어류의 농도는 비슷하거나 낮게 검출되었다.

Keywords

Acknowledgement

Supported by : 한국연구재단

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