Calibration in chemical measurement processes. II. A methodological approach

This article discusses the common terms related to chemical measurement processes, the different methodologies of calibration (which are not always well established) and the role of chemical standards. General classifications of reference materials and their use in the calibration process are clarified. Related features, such as recovery studies or screening and corrections of matrix systematic errors, are also considered, and guidelines concerning experimental design and verification of the calibration are given.