Plant-Matrix Certified Reference Materials as a Tool for Ensuring the Uniformity of Chemical Measurements

Abstract

The role of plant-matrix certified reference materials as instruments ensuring the uniformity of measurements and the reliability of the results in performing ecological research and the production of foodstuffs and medicines is discussed. Specific features of the composition of plants as of test materials for chemical analysis and requirements to the methods of its determination are considered from the viewpoint of the provision of traditional agricultural tasks and geochemical, ecological, and medicobiological projects with certified reference materials. International and Russian regulatory documents on the preparation of certified reference materials taking into account the limited concentrations of toxic elements in plant materials are presented. Various content of classes of the existing plant-matrix certified, reference and for quality control materials of different producers are noted. The need in the expansion of the list of matrix certified reference materials for ensuring the reliability of analytical procedures in using methods of chemical analysis of plant materials and the consistency of their results is shown.

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