ISO 14720的本部分定义了一种测定粉末和粒状非氧化陶瓷原料和材料中硫的方法，这些原料和材料在氧气环境中在较高温度下完全氧化，例如碳和石墨材料。 对于在这些条件下不能完全氧化的材料，可以确定在这些条件下可能释放的硫，例如粘附硫。 ISO 14720的本部分适用于含硫质量分数的材料≤ 灰分的10%和质量分数<； 20%，定义的方法仅适用于钡的质量分数为<；10 mg/kg，因为用这种方法无法检测到硫酸钡中结合的硫。 对于该方法的检测下限，对于电感耦合等离子体光发射光谱法（ICP/OES）和离子色谱法（IC），硫的质量分数分别为0,5 mg/kg和5 mg/kg。

This part of ISO 14720 defines a method for the determination of sulfur in powdered and granular non-oxidic ceramic raw materials and 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 part of ISO 14720 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 barium < 10 mg/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 0,5 mg/kg in the case of inductively coupled plasma optical emission spectrometry (ICP/OES) and 5 mg/kg in the case of ion chromatography (IC) has to be considered as a recommended value.