Home / Standards / GB/T 7739.7-2007 GB/T 7739.7-2007 Abolished Methods for chemical analysis of gold concentrates - Part 7: Determination of iron contents 金精矿化学分析方法 第7部分:铁量的测定 Standard Type GBT ICS 73.060.99 CCS D46 Status 废止 Issue Date 2007-04-27 Implementation 2007-11-01 Responsible Dept 国家标准委 Drafting Unit 国家标准委