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稀土中低含量铕的分析一般采用极谱法,发射光谱法和锌柱还原滴定法。极谱法因操作麻烦和分析误差大,目前已不多用;发射光谱法测定混合稀土中小于0.3％的铕准确度较差;锌柱还原滴定法对于低含量铕的分析不能满足测定要求。1966年Amos Willis提出在氧化亚氮-乙炔火焰中用原子吸收法测定难熔金属元素,目前已发展到包括稀土元素在内的多种元素的测定。本文在前人工作的基础上研究了用原子吸收法测定包头矿混合稀土中的
Analysis of low content of europium in rare earth generally use polarography, emission spectrometry and zinc column reduction titration. Polarographic methods are cumbersome due to the troublesome operation and large analytical errors. The determination of Eu less than 0.3% in mixed rare earth by Emission Spectrometry is less accurate. The analysis of zinc column reduction titration with low content of europium can not meet the determination requirements. In 1966, Amos Willis proposed the determination of refractory metal elements by atomic absorption spectroscopy in the nitrous oxide-acetylene flames. At present, the determination of various elements including rare earth elements has been developed. Based on the previous work, this paper studied the determination of Baotou ore mixed rare earth by atomic absorption spectrometry