Home / Standards / GB/T 7731.6-2008 GB/T 7731.6-2008 Active Ferrotungsten - Determination of arsenic content - The molybdenum blue photometrie method and inductively coupled plasma-atomic emission spectrometry 钨铁 砷含量的测定 钼蓝光度法和电感耦合等离子体原子发射光谱法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2008-08-19 Implementation 2009-04-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A