Certification of High Purity Metals as Primary Reference Materials – A Challenge for Multielement Trace Analysis

摘要: The Bundesanstalt fur Materialforschung und -prufung (Federal Institute for Materials Research and Testing) (BAM) is establishing a system of primary reference materials to meet the demands metrological traceability act as national standards in field elemental analysis. For all elements periodic table - except those that are gases or radioactive two different kinds being certified. One analyte calibration (Type A) one problems concerning matrix matching B). These substances very high purity defined stoichiometry. As far possible, pure metals rather than compounds used. certification both types material requires most be certified at low levels using trace element analysis methods. application these methods described examples copper iron given.