Schweizerische Normen-Vereinigung

Testing of ceramic raw and basic materials - Determination of sulfur in powders and granules of non-oxidic ceramic raw and basic materials - Part 2: Inductively coupled plasma optical emission spectrometry (ICP/OES) or ion chromatography after burning in an oxygen flow
 N SN EN ISO 14720-2

Annotation

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.

The part of ISO 14720 is applicable for materials with mass fractions of sulfur 10% and mas 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/IES) and 5mg/kg in the case of ion chromatography (IC) has to be considered as a recommended value.

Автоматический перевод:

Тестирование керамического сырья и основных материалов - Определения серы в порошках и гранулах неоксидного керамического сырья и основных материалов - Часть 2: Индуктивно соединенная плазменная оптическая спектрометрия эмиссии (ICP/OES) или хроматография иона после горения в потоке кислорода