Geostandards and Geoanalytical Research Bibliographic Review 2011

The annual bibliographic review of GGR has a long tradition dating back to 1981, this being the thirty-second instalment to appear. The review contains references to articles from geochemical, geological, environmental and chemical journals in which data of reference materials (RMs) and certified RMs (CRMs) were published. The current definitions for a RM and a CRM are published in the ISO Guide 30 Amendment 1 (2008): A RM is a material, sufficiently homogeneous and stable with respect to one or more specified properties, which has been established to be fit for its intended use in a measurement process, and a CRM is a RM characterised by a metrologically valid procedure for one or more specified properties, accompanied by a certificate that provides the value of the specified property, its associated uncertainty, and a statement of metrological traceability. RMs and CRMs are necessary for quite different purposes, such as calibration, method validation, quality control and assurance, and to establish metrological traceability to measurements (Wiedenbeck et al. 2012).