陶瓷材料测试 非氧化陶瓷原料和陶瓷材料中硫的测定 第2部分：在氧气流中燃烧后采用电感耦合等离子体发射光谱法（ICP-OES）或离子色谱法（IC）

[中文适用范围]： 本文件规定了一种测定非氧化性陶瓷原料和陶瓷材料中硫含量的方法，这些材料在氧气气氛中高温完全氧化，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，可以测定在此条件下可释放的硫，例如粘附硫。本文件适用于硫质量分数≤10%且灰分质量分数<20%的材料。所定义的方法不适用于硫质量分数<10 mg/kg的钡含量材料，因为该方法无法检测到硫酸钡中结合的硫。对于本方法的检出限，电感耦合等离子体发射光谱法（ICP-OES）可视为0.5 mg/kg，离子色谱法（IC）可视为5 mg/kg。 [外文原描述]： 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 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) can be considered as a practical value.