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International comparison of the determination of the mass fraction of cadmium, chromium, mercury and lead in polypropylene: the Comité Consultatif pour la Quantité de Matière pilot study CCQM-P106

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Abstract

The CCQM-P106 pilot study was organized by the inorganic working group of the Comité Consultatif pour la Quantité de Matière (CCQM) as a feasibility comparison to study the applicability of different analysis methods to the polypropylene sample and test the abilities of the participants for measuring the Cd, Cr, Hg and Pb in polypropylene. National Institute of Metrology P.R. China (NIM) acted as the coordinating laboratory of this pilot study. There were 21 laboratories that submitted the final results. The median values of the mass fraction of Cd, Cr, Hg and Pb were 36.12 mg kg−1 (the median absolute deviation about the median (MADe) = 0.46 mg kg−1), 252.5 mg kg−1 (MADe = 3.4 mg kg−1), 387.0 mg kg−1 (MADe = 10.1 mg kg−1) and 466.2 mg kg−1 (MADe = 8.9 mg kg−1), respectively. Isotope dilution mass spectrometry (IDMS), inductively coupled plasma-mass spectrometry (ICP-MS), inductively coupled plasma-optical emission spectrometry (ICP-OES), atomic absorption spectrometry (AAS), instrumental neutron activation analysis (INAA) and X-ray fluorescence (XRF) measurement methods were used, and microwave digestion was used by the most of the participants. In general, very good agreement of the results was observed. Moreover, compared to the results of other methods, the results of IDMS still showed less spread amongst laboratories and had a smaller uncertainty. In addition, the results of some analytes used by XRF and INAA also got satisfactory agreement with the median value.

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Acknowledgments

The author gratefully acknowledges the funding from the Innovation Methods Program (2008IM021800) and AKY0817 program.

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Authors and Affiliations

  1. National Institute of Metrology, Beijing, China

    Liandi Ma & Liuxing Feng

  2. National Metrology Institute of Japan, Tsukuba, Japan

    A. Hioki

  3. Korean Research Institute of Standards and Science, Taejon, Republic of Korea

    K. H. Cho

  4. Federal Institute for Materials Research and Testing, Berlin, Germany

    J. Vogl & A. Berger

  5. National Institute for Standards and Technology, Gaithersberg, MD, USA

    G. Turk

  6. Underwriter Laboratories, Millville, NY, USA

    S. Macleod

  7. Laboratoire National de Métrologie et d’Essais, Paris, France

    G. Labarraque

  8. Government Laboratory, Homantin, Hongkong

    W. F. Tong

  9. Physikalisch-Technische Bundesanstalt, Braunschweig, Germany

    D. Schiel

  10. National Institute of Metrology, Pathumthani, Thailand

    C. Yafa

  11. Instituto Nacional de Tecnologia Industrial, Buenos Aires, Argentina

    L. Valiente

  12. All-Russia D.I. Mendeleyev Scientific and Research Institute for Metrology, St. Petersburg, Russia

    L. A. Konopelko

  13. Institute for Reference Materials and Measurements/Studiecentrum voor Kernenergie-Centre d’Etudes de l’Energie Nucléaire, Geel, Belgium

    C. Quetel & P. Vermaercke

  14. Centro Nacional de Metrologia, Queretaro, Mexico

    J. V. L. Manzano

  15. National Metrology Institute of South Africa, Pretoria, South Africa

    M. Linsky

  16. Chilean Nuclear Energy Commission, Santiago, Chile

    E. Cortés

  17. Department of Science Service, Bangkok, Thailand

    S. Tangpitayakul

  18. Thailand Institute of Scientific and Technological Research, Bangkok, Thailand

    L. Plangsangmas

  19. National Institute of Metrological Research Unit of Radiochemistry and Spectroscopy, Pavia, Italy

    L. Bergamaschi

  20. Laboratory of the Government Chemist, Teddington, UK

    R. Hearn

Authors
  1. Liandi Ma
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  2. Liuxing Feng
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  3. A. Hioki
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  4. K. H. Cho
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  5. J. Vogl
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  6. A. Berger
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  7. G. Turk
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  8. S. Macleod
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  9. G. Labarraque
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  10. W. F. Tong
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  11. D. Schiel
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  12. C. Yafa
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  13. L. Valiente
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  14. L. A. Konopelko
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  15. C. Quetel
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  16. P. Vermaercke
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  17. J. V. L. Manzano
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  18. M. Linsky
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  19. E. Cortés
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  20. S. Tangpitayakul
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  21. L. Plangsangmas
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  22. L. Bergamaschi
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  23. R. Hearn
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Corresponding author

Correspondence to Liuxing Feng.

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Ma, L., Feng, L., Hioki, A. et al. International comparison of the determination of the mass fraction of cadmium, chromium, mercury and lead in polypropylene: the Comité Consultatif pour la Quantité de Matière pilot study CCQM-P106. Accred Qual Assur 15, 39–44 (2010). https://doi.org/10.1007/s00769-009-0574-z

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  • DOI: https://doi.org/10.1007/s00769-009-0574-z

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