Home / Standards / GB/T 47081-2026 GB/T 47081-2026 Upcoming Determination of iron, aluminum and calcium of silicon nitride powder—Inductively coupled plasma atomic emission spectrometry 氮化硅粉体中铁、铝、钙含量的测定 电感耦合等离子体发射光谱法 Standard Type GBT ICS 77.040 CCS H17 Status 即将实施 Issue Date 2026-01-28 Implementation 2026-08-01 Responsible Dept 国家标准委 Drafting Unit N/A