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稀土、钍、铀、锆、铌、钽、磷等元素的分离,以纸色层方法为简易快速。但现有方法均采用沉淀或其它方法将稀土与大部份伴生元素分离后再进行色层分离,或经多次色层达到分离,失去纸色层方法的优越性。本文为适应微量矿物分析,利用各元素氟化物溶解度不同,一些离子的盐酸络合物可被酮类、醇类等有机溶剂萃取,及它们的分配系数各有差异,选用丁醇-氢氟酸-盐酸体系进行纸上分离,使稀土与其它伴生元素达到一次分离,然后分别进行测定。
Rare earth, thorium, uranium, zirconium, niobium, tantalum, phosphorus and other elements of separation, paper color layer method for quick and easy. However, the existing methods adopt precipitation or other methods to separate the rare earth from most of the associated elements and then separate the color layers or separate them by multiple color layers to lose the advantages of the paper color layer method. In this paper, to adapt to the analysis of trace minerals, the solubility of each element of fluoride is different. Some ionic hydrochloric acid complexes can be extracted by organic solvents such as ketones and alcohols, and their partition coefficients are different. Butanol- - hydrochloric acid system for paper separation, rare earth and other associated elements to achieve a separation, and then were measured.