This document specifies a method for the determination of sulfur in non-oxidic ceramic raw materials and ceramic materials, which are completely oxidized at a higher temperature in an oxygen atmosphere, e.g. carbon and graphite materials.

For materials which are not completely oxidizable under these conditions, it is possible to determine sulfur that can be released under these conditions, e.g. the adherent sulfur.

This document is applicable for materials with mass fractions of sulfur 10% and mass fractions of ash 20%, The defined method is limited for materials with mass fractions of barium10mg/kg, because the sulfur bonded in barium sulfate is not detectable with this method.

For the lower detection limit of this method, a mass fraction of sulfur of 0,5mg/kg in the case of inductively coupled plasma optical emission spectrometry (ICP-OES) and 5mg/kg in the case of ion chromatography (IC) can be considered as a practical value.

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