Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Application of On-Line SPE-LC/MSD to Measure Perfluorinated Compounds (PFCs) in Water

On-Line SPE-LC/MSD 시스템을 이용한 수중의 과불화 화합물(PFCs) 분석

  • 손희종 (부산광역시 상수도사업본부 수질연구소) ;
  • 염훈식 (부산광역시 상수도사업본부 수질연구소) ;
  • 정종문 (부산광역시 상수도사업본부 수질연구소) ;
  • 장성호 (부산대학교 지역환경시스템공학과)
  • Received : 2011.06.14
  • Accepted : 2013.02.06
  • Published : 2013.03.30
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Abstract

We applied a sensitive method based on on-line solid-phase extraction (SPE) and liquid chromatography/mass spectrometry (LC/MSD) using an electrospray interface for the determination of eleven perfluorinated compounds (PFCs) in water. The on-line connection suppressed the target loss by keeping the cartridge from drying, which resulted in improvement of the recovery and saving of the analytical time. For the on-line solid-phase extraction of 10 mL water samples, recoveries were between $80.4{\pm}5.2%{\sim}109.5{\pm}1.4%$ and limit of quantification (LOQ) were 3.6~15.9 ng/L for the PFCs. The total PFCs concentrations of the tributaries and main stream of Nakdong River water samples were in the range of $8.0{\sim}678.6{\mu}g/L$.

본 연구는 기존의 고상추출(SPE) 과정을 분석장비인 LC/MSD에 on-line으로 연결함으로써 cartridge의 건조를 막아 target 물질의 손실을 최대한 억제하였으며 11종의 PFCs에 대해 실제 matrix가 있는 낙동강 원수를 이용한 실험에서 $80.4{\pm}5.2%{\sim}109.5{\pm}1.4%$ 범위의 높은 회수율을 구할 수 있었다. 낙동강에서의 PFCs 분포를 조사한 결과 하수처리장 방류수의 영향을 받는 지역(진천천과 금호강 하류)은 고농도의 PFCs가 검출되었으며, 낙동강 하류의 매리원수에서는 검출농도가 급격히 감소하여 PFOA만 8.0 ng/L의 농도로 검출되었다. 외국의 PFCs 검출현황을 보고한 연구결과들과 비교해 볼 때 낙동강 지류에서는 비교적 높은 농도로 PFCs가 검출되어 안심할 수 있는 수준은 아니었으며, 낙동강 본류의 경우도 여러 지역의 상수원으로 이용되기 때문에 주기적인 모니터링이 필요한 것으로 나타났다.

Keywords

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