Home / Standards / GB/T 42276-2022 GB/T 42276-2022 Active Determination of fluorine ion and chloride ion in silicon nitride powder—Ion chromatography method 氮化硅粉体中氟离子和氯离子含量的测定 离子色谱法 Standard Type GBT ICS 77.040 CCS H17 Status 现行 Issue Date 2022-12-30 Implementation 2023-04-01 Responsible Dept 国家标准委 Drafting Unit N/A