SJ－02型复合材料固体电极快速极谱法测定银的研究  

STUDY ON DETERMINATION BY QUICK POLAROGRAPHY USING SJ-02 TYPE SOLID ELECTRODE OF COMPOSITE MATERIAL

作　　者：宋玉珍[1] 

机构地区：[1]核工业北京化工冶金研究院

出　　处：《铀矿冶》1995年第1期53-57,共5页Uranium Mining and Metallurgy

摘　　要：用自行研制的ＳＪ—０２型复合材料固体电极，进行了快速极谱法测定银的研究。在氨性溶液中银形成的银氨络离子在固体电极上还原，于－０．１Ｖ（相对铂丝电极）给出明晰的还原峰。银的浓度在５—２００μｇ／ｍＬ范围内呈良好的线性关系。方法简便、快速、灵敏度高、再现性好，精密度为±５．０％，回收率９１％－１０９％。方法适用于矿石和浸出液中银的测定。A method of quick polarographic determination of silver was studied by using the SJ-02type solid electrode made of the composite material. In the supporting electrolyte of NH4OHNH4Cl-Na2SO3. The Ag(I) return peak appeared with peak potential -0. 2V (vs Pt electrode). The height of wave was rectilinearly related to the concentration of Ag (I) in the range of 5-200μg/mL. The method is simple and sensitive with excellent repeatability of analytical results. The precision of the method for the determination of Ag(I) is better than ± 5%, and the recovery is 91%-109% for the determination of silver in ore and sulution.

关 键 词：复合材料 固体电极 极谱法 银 测定 

分 类 号：TN103[电子电信—物理电子学]