Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Proficiency testing of cadmium and lead in polypropylene resin

폴리프로필렌 수지 중 카드뮴과 납 측정 숙련도시험

  • Cho, K.H. (Division of Metrology for Quality Life, Korea Research Institute of Standards and Science) ;
  • Lim, M.C. (Division of Metrology for Quality Life, Korea Research Institute of Standards and Science) ;
  • Min, H.S. (Division of Metrology for Quality Life, Korea Research Institute of Standards and Science) ;
  • Han, M.S. (Division of Metrology for Quality Life, Korea Research Institute of Standards and Science) ;
  • Song, H.J. (Division of Metrology for Quality Life, Korea Research Institute of Standards and Science) ;
  • Park, C.J. (Division of Metrology for Quality Life, Korea Research Institute of Standards and Science)
  • 조경행 (한국표준과학연구원 삶의질표준부) ;
  • 임명철 (한국표준과학연구원 삶의질표준부) ;
  • 민형식 (한국표준과학연구원 삶의질표준부) ;
  • 한명섭 (한국표준과학연구원 삶의질표준부) ;
  • 송현주 (한국표준과학연구원 삶의질표준부) ;
  • 박창준 (한국표준과학연구원 삶의질표준부)
  • Received : 2007.04.30
  • Accepted : 2007.06.08
  • Published : 2007.06.28
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Abstract

The various environmental regulation directives such as RoHS (restriction of hazardous substances in electrical and electronic products) and WEEE (waste from electrical and electronic equipments) are practically used as the technical barrier in international trade (TBT) of vehicles and electrical and electronic products recently. Regarding such an environmental regulation, Korea Research Institute of Standards Science (KRISS) organized a proficiency testing scheme to establish the reliability of measurement results produced by the relevant research institutes and test laboratories in Korea. Participants were 31 laboratories related to production of the electrical and electronic equipments and mobile vehicles. Two polypropylene samples of pellet type were employed as the proficiency testing materials (PTMs). Cadmium and lead were the analytes chosen among six components regulated in European Union (EU) RoHS directive. The PTMs were sent to the participants by post on September $1^{st}$ 2006, and deadline for results submission were October $10^{th}$ 2006. The results of each laboratory were evaluated in comparison with KRISS reference values using Robustic Z-score and Youden plot methods. The results of the various sample digestion methods were also compared. Most of participants reported good agreement within 10 % range of reference values. However, results from several laboratories showed significant biases from reference values. These laboratories should establish the quality assurance system for improvement of the measurement reliability.

최근의 전기전자제품 중 유해물질규제지침(RoHS)이나 폐전기전자제품 처리 지침(WEEE) 등의 각종 환경규제는 국제교역에 있어 실질적인 무역장벽으로 작용하고 있다. 한국표준과학연구원(KRISS)에서는 이와 같은 환경규제와 관련하여 국내시험연구기관 및 관련산업체실험실의 측정 신뢰성 확보를 위한 숙련도 시험을 실시하였다. 참여기관은 국내 전기전자 제품 및 자동차 관련 실험실 31개소이다. 숙련도시험용 시료는 pellet type 폴리프로필렌 소재 2 종이며, 측정대상원소는 유럽공동체의 RoHS 지침에서 규정하고 있는 6개 성분 중 카드뮴 (Cd)과 납 (Pb)이다. 시료는 2006년 9월 1일 각 참여실험실에 우편 송부하였으며 10월 10일까지 측정 결과를 접수하였다. 각 실험실의 측정 결과는 KRISS 기준값과의 비교, Robustic Z-score, Youden plot 등에 의해 비교 평가하고 전처리 방법에 따른 측정 결과도 비교 검토하였다. 전반적으로 기준값과의 10% 범위 내에서 일치되는 결과를 보고하였으나 일부 실험실은 심각한 bias를 보이고 있어 측정결과의 신뢰성 향상을 위한 품질보증 시스템을 갖추어야 할 필요가 있다.

Keywords

References

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