Calibration in solid-sample spectrometry: statistical routine or a complex of problems?

The analytical calibration in atomic spectrometry similar to other indirect analytical methods has been for many years basically a routine procedure. While the calibration is based on the use of the solution standards, it is only a chemometrical routine in which the by IUPAC recommended complex procedure could be used. In the last two decades the solid-sampling methods have been spread out, their interactivity is connected with their use in analysis of the non-oxide ceramics as well as samples of the environmental relevancy (e.g. sediments, sludge, dust sediments, etc.). This wide use of the solid sampling methods has pointed to more specific problems, as lack of suitable CRM-s, homogeneity problems and with those connected problems of the useable sample amounts. Some of the mentioned problems as well as their elimination possibilities are the aim of this work.