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Proceedings Paper

Role of neutron activation analysis in the preparation and certification of reference materials
Author(s): Rajmund Dybczynski
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Paper Abstract

Reference materials (RMs) and certified reference materials (CRMs) are an important tool in achieving measurement compatibility. One of the possible approaches in producing such materials is organization of world-wide interlaboratory comparisons. The sequence of actions that have to be taken in order to prepare and certify a reference material for multielement inorganic trace analysis is described and discussed. The significance of careful supervision by the person responsible for all the steps starting from choice of the material and sampling, through various stages of preparation down to analysis, evaluation of results, and final assigning of `recommended' (certified) and `information' values is emphasized. The significance of using the proper method of data evaluation and proven criteria for assigning `recommended' (certified) values is discussed in detail. It is shown on several examples that neutron activation analysis (NAA) plays a very important and sometimes unique role in the homogeneity checking and certification of reference materials. Some approaches enabling independent validation of the `recommended' or `information' values assigned in the process of certification are demonstrated.

Paper Details

Date Published: 3 March 1995
PDF: 18 pages
Proc. SPIE 2339, International Conference on Neutrons and Their Applications, (3 March 1995); doi: 10.1117/12.204189
Show Author Affiliations
Rajmund Dybczynski, Institute of Nuclear Chemistry and Technology (Poland)


Published in SPIE Proceedings Vol. 2339:
International Conference on Neutrons and Their Applications
George Vourvopoulos; Themis Paradellis, Editor(s)

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