Role of neutron activation analysis in the preparation and certification of reference materials

Rajmund Dybczynski

doi:10.1117/12.204189

3 March 1995 Role of neutron activation analysis in the preparation and certification of reference materials

Rajmund Dybczynski

Proceedings Volume 2339, International Conference on Neutrons and Their Applications; (1995) https://doi.org/10.1117/12.204189
Event: 4th International Conference on Applications of Nuclear Techniques: Neutrons and their Applications, 1994, Crete, Greece

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.

Citation Download Citation

Rajmund Dybczynski "Role of neutron activation analysis in the preparation and certification of reference materials", Proc. SPIE 2339, International Conference on Neutrons and Their Applications, (3 March 1995); https://doi.org/10.1117/12.204189

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KEYWORDS

Chemical elements

Cobalt

Chromium

Chemistry

Ions

Cerium

Europium

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