Home / Standards / GB/T 7728-1987 GB/T 7728-1987 Abolished Chemical analysis of metallurgical products--General rule for flame atomic absorption spectrometric methods 冶金产品化学分析 火焰原子吸收光谱法通则 Standard Type GBT ICS N/A CCS H10 Status 废止 Issue Date 1987-05-12 Implementation 1988-03-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A