Abstract
A 7 kg stone of a Carrara marble was reduced to grains smaller than 100 μm, mixed and homogeneized in order to prepare a marble reference material. The homogeneity was tested for 16 elements by instrumental neutron activation analysis (INAA). Through a one-way analysis of variance based on several analyses of each of 15 bottles and within the same bottle, it was concluded that the inter-bottle heterogeneity is not greater than the intra-bottle heterogeneity. Results on the concentration of major and trace elements in the marble reference material, obtained by different laboratories and different techniques, are given. The limestone certified reference material KALKSTEIN KH was used to evaluate measurement accuracy, to intercalibrate laboratories, and to provide compatibility of measurement data.
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Carmo Freitas, M., Moens, L., De Paepe, P. et al. Preparation and analysis of a marble reference material. Journal of Radioanalytical and Nuclear Chemistry, Articles 123, 273–294 (1988). https://doi.org/10.1007/BF02036397
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DOI: https://doi.org/10.1007/BF02036397