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前言钐在铜铁试剂-乳化剂OP-氯化铵体系中,能产生灵敏的络合吸附催化波,检测下限达5.32×10~(-9)M钐浓度在6.6×10~(-9)M～6.6×10~(-8)M之间与导数波高之间成线性关系。非离子表面活性剂OP的存在使灵敏度提高近10倍。最佳分析条件为:pH4.4±0.2,0.04MNH_4Cl,0.004％Cup,0.0056％OP。经过分离,测定了矿石中痕量钐,得到了满意的结果。实验部分 (一)仪器与主要试剂 1.JP-IA型示波极谱仪:采用三电极系统:滴汞电极为阴极,铂电极为阳极,银片电极为参比电极。 2.三氧化二钐:光谱纯。配制成〔Sm~(3+)〕=0.1μg/ml的10％HCl溶液,用时稀释至所需浓度。
Preface Samarium in the copper and iron reagent - emulsifier OP - ammonium chloride system, can produce sensitive complex adsorption catalytic wave, the detection limit of 5.32 × 10 -9 M samarium concentration of 6.6 × 10 -9, A linear relationship exists between M ~ 6.6 × 10 ~ (-8) M and derivative wave height. The presence of non-ionic surfactant OP increased the sensitivity nearly 10-fold. The best analysis conditions were: pH4.4 ± 0.2,0.04MNH_4Cl, 0.004% Cup, 0.0056% OP. After separation, the determination of trace amounts of samarium ore, obtained satisfactory results. Experimental part (A) of the instrument and the main reagent 1.JP-IA oscilloscope polarography: The three-electrode system: drop mercury electrode for the cathode, platinum electrode for the anode, silver electrode as the reference electrode. 2. Sm2O3: pure spectrum. Formulation of [Sm ~ (3 +)] = 0.1 μg / ml in 10% HCl and dilute to the desired concentration.