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October 1, 1991Geostandards and Geoanalytical Research

Two New Polish Geological‐Environmental Reference Materials: Apatite Concentrate (CTA‐AC‐1) and Fine Fly Ash (CTA‐FFA‐1)

Rajmund DYBCZYNASKI Halina Polkowska–Motrenko Zbigniew SAMCZYNASKI Z. Szopa

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Abstract

World‐wide intercomparison runs has made possible the certification of two new Polish geological‐environmental reference materials for multi‐element trace analysis: Apatite Concentrate (CTA‐AC‐1) and Fine Fly Ash (CTA‐FFA‐1). “Recommended values’ are established for 25 (CTA‐AC‐1) and 40 (CTA‐FFA‐1) elements respectively. In addition, “information values’ are assigned for 12 elements in CTA‐AC‐1 and 10 elements in CTA‐FFA‐1. Our method of data evaluation has been further improved and a modified version of criteria for assigning recommended and information values is proposed.

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DYBCZYNASKI et al. (1991) studied this question.

synapsesocial.com/papers/695d51a45203b589b30f5251 https://doi.org/10.1111/j.1751-908x.1991.tb00110.x

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