Home / Standards / GB/T 6730.19-1986 GB/T 6730.19-1986 Abolished Methods for chemical analysis of iron ores--The bismuth phosphomolybdate blue photometric method for the determination of phosphorus content 铁矿石化学分析方法 铋磷钼蓝光度法测定磷量 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