Home / Standards / GB/T 6730.22-1986 GB/T 6730.22-1986 Abolished Methods for chemical analysis of iron ores--The diantipyrine methane photometric method for the determination of titanium content 铁矿石化学分析方法 二安替吡啉甲烷光度法测定钛量 Standard Type GBT ICS 73.060 CCS D31 Status 废止 Issue Date 1986-08-19 Implementation 1987-08-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A