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2—噻吩甲酰三氟丙酮(TTA)和诸如三正辛基氧化膦(TOPO)、邻菲罗啉(phen)等中性附加配位体所组成的协同萃取体系已应用于荧光分析法测定痕量钐和铕,该体系选择性、灵敏度均颇高,适用于岩石、矿物、生物体的分析,但需使用造成环境污染的有机溶剂。竹田津等将非离子表面活性剂用于荧光分析,免去了有机溶剂萃取操作,方法简便。如:TTA—TOPO—曲拉通X-100体系荧光法测定钐、铕,PTA(三氟乙酰特戊酰甲烷)—TOPO—BL—9EX体系荧光法测定钐、铕、铽
The synergistic extraction system consisting of 2-thienoyl trifluoroacetone (TTA) and neutral additional ligands such as tri-n-octylphosphine oxide (TOPO) and phen phenanthrene (phen) has been applied to the determination of Trace amounts of samarium and europium, the system selectivity and high sensitivity are suitable for rock, minerals, organisms analysis, but the use of organic solvents that cause environmental pollution. Takeda Jin and other non-ionic surfactants for fluorescence analysis, eliminating the need for organic solvent extraction, the method is simple. Such as: TTA-TOPO-Triton X-100 system Determination of samarium, europium, PTA (trifluoroacetyl pivaloylmethane) -TOPO-BL-9EX system Determination of samarium, europium, terbium