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本文讨论了阳离子表面活性剂——溴化十六烷基三甲基铵(CTMAB)对萤光反应敏化作用的机理;提出了镧、钇的萤光分析方法,并确定了萤光反应的最佳条件。 镧、钇的三元络合物与其二元络合物相比,萤光强度分别增强了四倍和十倍。表面活性剂的引入也大大地增加了方法的选择性。 在此基础上,设计了先测定钇含量,然后用简单的作图法测定镧含量的镧、钇联合测定法。用本法测定了混合稀土样中谰、钇的含量,方法简便,结果令人满意。
In this paper, the mechanism of the sensitizing effect of cationic surfactant Cetyltrimethylammonium Bromide (CTMAB) on fluorescence was discussed. Fluorescence analysis of lanthanum and yttrium was proposed and the fluorescence response Optimal conditions. The lanthanum and yttrium ternary complexes have a fourfold and a tenfold increase in their fluorescence intensities compared with their binary complexes, respectively. The introduction of the surfactant also greatly increases the selectivity of the method. On this basis, the combination of lanthanum and yttrium was first designed to measure the content of yttrium and then the lanthanum content was determined by a simple mapping method. This method was used to determine the contents of 谰 and yttrium in mixed rare earth samples. The method is simple and the results are satisfactory.