GB/T 6730.24-1986 Methods for chemical analysis of iron ores--The arsenazo 3 photometric method for the determination of rare earth elements content (English Version)
This standard applies to the determination of the total amount of rare earths in iron ore, iron concentrate, sinter and pellets. Measuring range: below 1.000%.
GB/T 6730.24-1986 history
2006GB/T 6730.24-2006 Iron ores Determination of total rare earth contentd Chlorophosphonazo mA spectrophotometric method
1986GB/T 6730.24-1986 Methods for chemical analysis of iron ores--The arsenazo 3 photometric method for the determination of rare earth elements content