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武汉大学合成的新型铈组稀土显色剂——对乙酰基偶氮胂已用于钢铁中铈组稀土元素的直接光度法测定。而矿石中铈组稀土的测定需经1-苯基-3-甲基-4-苯甲酰基-吡唑酮-[5](PMBP)萃取分离。本文研究了不经萃取分离,采用联合掩蔽直接光度测定矿物中铈组稀土的方法。拟定的方法简便,重现性好,既可减轻劳动强度,又可免除萃取对环境的污染。可适于批量样品中0.00 X～0.X％铈组稀土的分析,分析结果符合地质要求。
A New Cerium Group Rare Earth Reagent Synthesized by Wuhan University - The Direct Spectrophotometric Determination of Rare Earth Elements in Cerium Group of Steel by Using Acetylarsenazo arsenic. However, the determination of rare earth elements in the cerium group in ore should be separated by 1-phenyl-3-methyl-4-benzoyl-pyrazolone- [5] In this paper, the method of direct determination of rare earths in the cerium group in minerals by the combined masking without extraction and separation was studied. The proposed method is simple, reproducible, both to reduce labor intensity, but also eliminates the pollution of extraction on the environment. It is suitable for the analysis of rare earths in the group of 0.00 X ~ 0.X% cerium in bulk samples. The analysis results are in accordance with geological requirements.