Home / Standards / GB/T 6730.38-1986 GB/T 6730.38-1986 Active Methods for chemical analysis of iron ores--The nitroso-R salt photometric method for the determination of cobalt content 铁矿石化学分析方法 亚硝基-R盐光度法测定钴量 Standard Type GBT ICS 73.060 CCS D31 Status 现行 Issue Date 1986-08-19 Implementation 1987-08-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A