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A method is discussed for the quantitative evaluation of the minimum sample size of a solid certified reference material (CRM) and for the calculation of the uncertainty to be allocated to the CRM if very small samples are used. This method requires a preliminary microhomogeneity control. Solid sampling Zeeman atomic absorption spectrometry (SS-ZAAS) is particularly suited for this as it allows fast submilligram analysis without sample pre-treatment and does not need calibration.

Additional information

Authors: PAUWELS J, JRC Geel (BE);HOFMANN C, JRC Geel (BE);VANDECASTEELE C, Katholieke Universiteit Leuven, Department of Chemical Engineering, Heverlee (BE)
Bibliographic Reference: Paper presented: 5th International Colloquium on Solid Sampling with Atomic Spectroscopy, Geel (BE), May 18-20, 1992
Availability: Available from (1) as Paper EN 36696 ORA
Record Number: 199210453 / Last updated on: 1994-12-02
Original language: en
Available languages: en