本文研究了纯银制成溶液后,以氯化钠或盐酸为沉淀剂,在酸性溶液中沉淀分离银,用原子吸收法测定滤液中的微量元素Cu、Zn、Cd、Ni.本法操作简便,方法准确度、精密度满意.一、主要试剂及仪器1.硝酸银溶液 分析纯AgNO_3配制成溶液,基准氯化钠标定为10mg/ml.2.Cu、Zn、Cd、Ni混合标准溶液 吸取由光谱纯CuO、ZnO、CdO、NiO配 In this paper, after the pure silver is made into solution, sodium chloride or hydrochloric acid is used as precipitating agent, silver is precipitated and precipitated in acidic solution, and the trace elements Cu, Zn, Cd and Ni in the filtrate are determined by atomic absorption method. , The method accuracy and precision are satisfied.Main reagents and instruments 1. AgNO3 solutionAnalyzed pure AgNO_3 is formulated into a solution, the standard sodium chloride is calibrated to10mg / ml.2Cu, Zn, Cd, Ni mixed standard solution By the spectrum of pure CuO, ZnO, CdO, NiO with