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纸上电泳法分离稀土元素常以EDTA、柠檬酸或α—羟基异丁酸(α—HIBA)等为电解液,分离后几乎都采用中子活化分析法来定量稀土元素。但该分析方法所需设备昂贵,未能广泛应用。本文以柠檬酸为电解液,用纸上高压电泳法(HVPE)分离稀土元素,并用2—噻吩甲酰三氟丙酮(TTA)和邻菲罗啉(phen)萃取荧光法同时测定分离后的钐、铕含量。由于将HVPE与荧光法联用,消除了荧光法中Fe~(3+)、Sc~(3+)及重稀土金属离子的荧光熄灭现象,使高灵敏度同时测定复杂试样中的钐、铕成为可能。本文方法试样量少、仪器简单、所需时间短,较中子活化分析法具
Electrophoretic separation of rare earth elements on paper often EDTA, citric acid or α-hydroxyisobutyric acid (α-HIBA) as the electrolyte, almost all of the separation by neutron activation analysis to quantify rare earth elements. However, the analytical equipment required is expensive and not widely used. In this paper, rare earth elements were separated by high pressure electrophoresis (HVPE) using citric acid as electrolyte and simultaneous extraction of samarium , Europium content. Due to the combination of HVPE and fluorescence method, the fluorescence quenching phenomenon of Fe ~ (3 +), Sc ~ (3+) and heavy rare earth metal ions in the fluorescence method is eliminated, and the simultaneous determination of samarium, europium become possible. The method of this sample is small, the instrument is simple, the time required is shorter than neutron activation analysis