GB/T 12690.6-2017

Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides—Part 6: Determination of iron content—Kslium thiocyanate, 1,10-Phenanthroline spectrophotometric method

稀土金属及其氧化物中非稀土杂质化学分析方法 第6部分：铁量的测定 硫氰酸钾、1,10-二氮杂菲分光光度法