Advertisement

Journal of Radioanalytical and Nuclear Chemistry

, Volume 277, Issue 3, pp 539–548 | Cite as

Findings of national proficiency test exercise for the determination of trace elements in edible mushroom reference material

  • S. Waheed
  • N. Siddique
  • M. Arif
  • I. Fatima
  • N. Khalid
  • S. Rahman
  • M. Daud
  • M. Wasim
Article

Abstract

This paper presents the results of the proficiency test exercise conducted in Pakistan for the determination of trace elements in mushroom reference material. Thirteen laboratories from different organizations of the country submitted trace elemental data on Al, As, Br, Ca, Cd, Ce, Cl, Co, Cr, Cs, Cu, Fe, Hg, K, Li, Mg, Mn, Na, P, Pb, Rb Sc, Si, Sm, Sr, Th, Zn. Results for Al, As, Br, Ca, Cd, Cl, Co, Cr, Cs, Cu, Fe, K, Mg, Mn, Na, Rb Sc, and Zn, in the mushroom material were reported by two or more participating laboratories and could be subjected to statistical evaluation. The original data of these trace elements was subjected to a computer program “Histo Version 2.1” provided by IAEA. The four outlier tests, i.e., Dixon, Grubbs, skewness and kurtosis were applied to the data sets. Consensus (overall) mean values, absolute standard deviation, relative standard deviation, standard error, median and range of values for these elements have been reported at a significance level of 0.05.

Keywords

Atomic Absorption Spectrometry International Atomic Energy Agency Instrumental Neutron Activation Analysis Proficiency Test Relative Bias 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    ISO/IEC, Proficiency Testing by Interlaboratory Comparisons, Part 1 ISO Guide 43-1, International Standard Organization, Geneva, 1997.Google Scholar
  2. 2.
    H. O. F. Andersson, Accred. Qual. Assur., 3 (1998) 224.CrossRefGoogle Scholar
  3. 3.
    J. K. Taylor, Quality Assurance of Chemical Measurements, Boca Raton, FL, Lewis Publishers Inc., 1998.Google Scholar
  4. 4.
    A. Mannan, S. Waheed, A. Rahman, S. Ahmad, I. H. Qureshi, Geostand. Newsl., 17 (1993) 223.CrossRefGoogle Scholar
  5. 5.
    S. Waheed, M. Waseem, A. Rahman, S. Ahmad, Geostand. Newsl., 25 (2001) 137.CrossRefGoogle Scholar
  6. 6.
    M. Waseem, A. Rahman, J. H. Zaidi, S. Waheed, S. Ahmad, J. Radioanal. Nucl. Chem., 248 (2001) 205.CrossRefGoogle Scholar
  7. 7.
    S. Waheed, A. Rahman, M. Daud, J. H. Zaidi, S. Ahmad, Radiochim. Acta, 92 (2004) 939.CrossRefGoogle Scholar
  8. 8.
    N. Siddique, A. Rahman, S. Waheed, M. Wasim, M. Daud, S. Ahmad, J. Radioanal. Nucl. Chem., 268 (2006) 579.CrossRefGoogle Scholar
  9. 9.
    N. Siddique, S. Waheed, A. Rahman, S. Ahmad, J. Radioanal. Nucl. Chem., 268 (2006) 113.CrossRefGoogle Scholar
  10. 10.
    S. Waheed, A. Rahman, N. Siddique, S. Ahmad, M. Rossbach, Accred. Qual. Assur., 12 (2007) 311.CrossRefGoogle Scholar
  11. 11.
    C. J. Brookes, I. G. Betteley, S. M. Loxton, Fundamentals of Mathematics and Statistics, Wiley, 1979.Google Scholar
  12. 12.
    M. Thompson, R. Wood, J. Pure Appl. Chem., 65 (1993) 2123.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC. 2008

Authors and Affiliations

  • S. Waheed
    • 1
  • N. Siddique
    • 1
  • M. Arif
    • 1
  • I. Fatima
    • 1
  • N. Khalid
    • 1
  • S. Rahman
    • 1
  • M. Daud
    • 1
  • M. Wasim
    • 1
  1. 1.Chemistry Division, Directorate of SciencePakistan Institute of Nuclear Science and TechnologyIslamabadPakistan

Personalised recommendations