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近年来在分析化学中广泛使用多元络合物,它的优越性在于提高了反应的灵敏度和选择性。在三元络合物中,一般说来,混合配位体络合物(混配络合物)的选择性较好,而胶束增溶络合物(胶溶络合物)的灵敏度较高,这在稀土多元络合物的显色反应中也表现得很明显。为了提高多元络合物显色反应的灵敏度和改善选择性,我们设想把混配络合物和胶溶络合物统一在一个多元络合物体系中。胶溶络合物中以三苯甲烷染料研究最多,其中应用较广的是铬天青S和铬菁R,因此,我们对稀土-铬天青S-1,10-邻菲啰啉-溴化十六烷基三甲铵四元络合物的显色反应进行系统的研究。
In recent years, extensive use of multiple chemical complexes in complex chemistry, its superiority is to improve the sensitivity and selectivity of the reaction. In the ternary complex, the selectivity of the mixed ligand complex (mixed complex) is generally better, and the sensitivity of the micelle solubilization complex (peptized complex) is better High, which is also evident in the chromogenic reaction of the rare earth complex. In order to improve the sensitivity and selectivity of the multicolor complex color reaction, we envisaged the unification of mixed complex and peptized complex in a multiple complex system. Triphenylmethane dyestuffs are the most studied among the peptized complexes, of which chrome azurol S and chromate R are the most widely used ones. Therefore, we have studied the effects of rare earth-chrome azure S-1,10-phenanthroline-bromine The color reaction of cetyltrimethylammonium quaternary complex was systematically studied.