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Estimation on the application of Reference Materials for PCBs Proficiency Testing from the transformer oil

폐절연유를 이용한 숙련도 평가용 PCBs 표준물질의 적용성 평가

  • Kim, Woo-Il (National Institute of Environmental Research, Incheon) ;
  • Kwon, Myung-Hee (National Institute of Environmental Research, Incheon) ;
  • Jeon, Tae-Wan (National Institute of Environmental Research, Incheon) ;
  • Kim, Dong-Hoon (National Institute of Environmental Research, Incheon) ;
  • Chun, Jin-Won (National Institute of Environmental Research, Incheon) ;
  • Sim, Ki-Tae (National Institute of Environmental Research, Incheon) ;
  • Yeon, Jin-Mo (National Institute of Environmental Research, Incheon)
  • 김우일 (국립환경과학원 화학물질거동연구과) ;
  • 권명희 (국립환경과학원 화학물질거동연구과) ;
  • 전태완 (국립환경과학원 화학물질거동연구과) ;
  • 김동훈 (국립환경과학원 화학물질거동연구과) ;
  • 전진원 (국립환경과학원 화학물질거동연구과) ;
  • 심기태 (국립환경과학원 화학물질거동연구과) ;
  • 연진모 (국립환경과학원 화학물질거동연구과)
  • Received : 2010.02.10
  • Accepted : 2010.05.07
  • Published : 2010.06.25

Abstract

This study was carried out to produce Reference Materials (RMs) for Proficiency Testing (PT) of PCBs in waste analytical laboratories. Two RMs were prepared from used transformer oil samples and PCB free transformer oil by spiking PCBs standard solutions. The spiked PCB RMs were homogenized by mixing and settling up to 90 days. Homogenized concentration of PCBs with Arochlor 1254 (6 ppm), 1254:1260 (1:1) (5 ppm) were observed in 60 days stationary phase but Arochlor 1260 (3.5 mg/L) were observed in 90 days stationary phase. One-way ANOVA test were carried out and showed that the RMs were suitably homogenized, which can be used for proficiency testing. The Relative Standard Deviations (RSDs) of analytical results were 3.51~5.01% for the PCBs RMs in 10 replicates. The expanded uncertainty of PCBs analytical procedure were 0.26~0.49.

Keywords

PCBs;uncertainty;RMs;PT

References

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