Jakość wyników analitycznych w śladowej analizie nieorganicznej

On the base of literature the problems concerning the interlaboratory and interlaboratory systems of quality control and assurance for analytical laboratories were discussed. The special attention was given on the role of certified reference materials (CRMs) in validation methods. A Certified Reference Material (CRM) is a RM accompanied by a certificate, one or more of whose properties are certified by a procedure that establishes its traceability to an accurate realization of the unit in which the property values are expressed (according to ISO Guide 30). Certified reference materials fulfill various purposes in laboratories: calibration of equipment, verification of accuracy of results, aids in methods or performance improvement where necessary, daily quality control and achievement of traceability to the basic units. CRMs serve in inorganic trace element as means of transferring measurement quality. When talking about subjects such as certified reference materials and their role in trace analysis, very importance is quality assurance. Quality Assurance (QA) in analytical chemistry is the name denoting the sum of procedures used to ascertain that results of analytical measurements are good enough for their intended purpose. It needs to be understood that QA is composed of two essential components: Quality Control and Quality Assessment. The importance of traceability in this system was also discussed.