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Dry mass determination: what role does it play in combined measurement uncertainty?

A case study using IAEA 392 and IAEA 413 algae reference materials

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Abstract

Elemental mass fractions are normally reported on a dry-mass basis. In addition, producers of reference material state their property values for dry masses and relate them to a defined dry mass determination method. This paper describes how biases and uncertainties in dry mass correction factors may affect values reported as ‘concentration per dry mass’. The influence of the use of different drying methods, accuracy of drying temperature, length of drying, environmental humidity, and the sample mass used for dry mass determination have been evaluated using two candidate International Atomic Energy Agency reference materials. Deviation from proposed drying methods was observed to lead to differences of up to 5% in dry mass correction factors. In addition, the heterogeneity of sample moisture as well as hygroscopic behaviour during weighing play an important role in the uncertainty estimation. Proposals are made regarding which sources of uncertainty arising from dry mass determination should be considered and included in the combined uncertainty of analytical results.

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References

  1. Kramer GN, Pauwels J, Belliardo JJ, Fresenius (1993) J Anal Chem 345:133–136

    Article  CAS  Google Scholar 

  2. Pauwels J, Schimmel H, Lamberty A (1998) Clin Biochem 31:437–439

    Article  CAS  Google Scholar 

  3. Pauwels J, van der Veen A, Lamberty A, Schimmel H (2000) Accred Qual Assur 5:95–99

    Article  CAS  Google Scholar 

  4. Kramer GN, Muntau H, Maier E, Pauwels J, Fresenius J (1998) Anal Chem 360:299–303

    Article  CAS  Google Scholar 

  5. Kramer GN, Pauwels J (1996) Anal Chim Acta 123:87–93

    CAS  Google Scholar 

  6. Vassileva E, Quétel CR (2004) Anal Chim Acta 519:79–86

    Article  CAS  Google Scholar 

  7. Peleg M (1988) J Food Sci 53(4):1216–1219

    Article  Google Scholar 

  8. Rückhold S, Isengard H-D, Hanss J, Grobecker KH (2003) Food Chem 82:51–59

    Article  Google Scholar 

  9. Yazgan S, Bernreuther A, Ulberth F, Isengard H-D (2006) Food Chem 96:411–417

    Article  CAS  Google Scholar 

  10. Rückhold S, Grobecker KH, Isengard H-D (2001) Fresenius J Anal Chem 370:189–193

    Article  Google Scholar 

  11. Zeiller E, Shakashiro A, IAEA/AL/148 (2005) Report on the characterization of the naturally grown algae reference material IAEA 392

  12. ISO Guide 35 Reference materials. General and statistical principles for certification, 3rd edn. 2006

  13. Krachler M (2001) Fresenius J Anal Chem 371:944–950

    Article  CAS  Google Scholar 

  14. Vogl J, Ostermann M (2006) Accred Qual Assur 11:356–362

    Article  CAS  Google Scholar 

  15. Dean JA In: Analytical chemistry handbook, McGraw-Hill, New York, ISBN 0-07-016197-6, 1.13–1.14

  16. Karl Fischer (1935) Angew Chem 48:394–396

    Google Scholar 

  17. Zeisler R, Dekner R, Zeiller E, Doucha J, Mader P, Kucera J (1998) Fresenius J Anal Chem 360:429–432

    Article  CAS  Google Scholar 

  18. IAEA Chemistry Unit’s internal working instruction CUI.GE.004 (revision 2006)

  19. Rueckhold S, Grobecker KH, Isengard H-D (2000) Fresenius J Anal Chem 368:522–527

    Article  Google Scholar 

  20. Schmitt K, Isengard H-D (1998) Fresenius J Anal Chem 360:465–469

    Article  CAS  Google Scholar 

  21. EURACHEM/CITAC Guide (2000) In: Quantifying uncertainty in analytical measurement, 2nd edn. QUAM:2000.P1

  22. Thompson M, Ellison SLR, Fajgelj A, Willetts P, Wood R (1999) Pure Appl Chem 71:337–348

    CAS  Google Scholar 

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Acknowledgments

The authors would like to thank Dr. P. Bode (Delft University of Technology), Dr. A. Toervenyi, and Dr. U. Sansone (both IAEA) for fruitful discussions and comments on our paper.

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Authors and Affiliations

  1. Chemistry Unit, PCI Agency’s Laboratories Seibersdorf, International Atomic Energy Agency, Wagramer Straße 5, 1400, Vienna, Austria

    E. Zeiller & R. Schorn

  2. Austrian Research Centre Seibersdorf, Abteilung Chemie, 2444, Seibersdorf, Austria

    E. Benetka & M. Koller

Authors
  1. E. Zeiller
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  2. E. Benetka
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  3. M. Koller
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  4. R. Schorn
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Correspondence to E. Zeiller.

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Zeiller, E., Benetka, E., Koller, M. et al. Dry mass determination: what role does it play in combined measurement uncertainty?. Accred Qual Assur 12, 295–302 (2007). https://doi.org/10.1007/s00769-006-0248-z

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  • DOI: https://doi.org/10.1007/s00769-006-0248-z

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