Chemical analysis methods for non-rare earth impurity of rare earth metals and their oxides—Part 1:Determination of carbon and sulfur contents—High frequency-infrared absorption method
全国稀土标准化技术委员会(SAC/TC 229)
GB/T 12690的本部分规定了稀土金属及其氧化物中碳、硫含量的测定方法。
本部分适用于稀土金属及其氧化物中碳、硫含量的测定。测定范围：0.005 0%～1.00%。
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