DIN 51457-2017 陶瓷原材料和基礎材料試驗. 采用電感耦合等離子體(ICP OES)光發射光譜法和電熱蒸發直接測定石墨粉末, 顆粒和團塊中痕量雜質的質量分數
Testing of ceramic raw and basic materials - Direct determination of mass fractions of trace impurities in powders, granules and lumps of graphite by optical emission spectroscopy by inductively coupled plasma (ICP OES) and by electrothermal vaporization