耿玉珍, 刘葵, 尹洪宗. 比光谱导数-零交点法同时测定铜、锌、镍[J]. 分析测试技术与仪器, 1998, (1): 36-40.
引用本文: 耿玉珍, 刘葵, 尹洪宗. 比光谱导数-零交点法同时测定铜、锌、镍[J]. 分析测试技术与仪器, 1998, (1): 36-40.
Geng Yuzhen, Liu Kui, Yin Hongzong. Simultaneous Determination of Copper, Zincand Nikel by the Derivative Ratio Spectrum-Zero Crossing Method[J]. Analysis and Testing Technology and Instruments, 1998, (1): 36-40.
Citation: Geng Yuzhen, Liu Kui, Yin Hongzong. Simultaneous Determination of Copper, Zincand Nikel by the Derivative Ratio Spectrum-Zero Crossing Method[J]. Analysis and Testing Technology and Instruments, 1998, (1): 36-40.

比光谱导数-零交点法同时测定铜、锌、镍

Simultaneous Determination of Copper, Zincand Nikel by the Derivative Ratio Spectrum-Zero Crossing Method

  • 摘要: 在pH=8的硼砂-HCl缓冲溶液中,以乳化剂OP作增溶剂,Cu2+、Zn2+、Ni2+分别与5-Br-PADAP形成稳定的配合物.用比光谱导数-零交点法同时测定铜、锌、镍.合成试样6次测定的相对标准偏差小于5%,铜、锌、镍的回收率分别为97.0%~103.2%、96.3%~104.8%和95.2%~101.9%.该方法应用于铝合金中铜、锌、镍的测定,结果满意.

     

    Abstract: In borax-HCL buffer solution of pH8, Cu2+、Zn2+ and Ni2+formed complexes respectively with 5-Br-PADAP. The solubilities of complexes were increased by OP.Derivative ratio Spectrum-Zero crossing method was used for the simultaneous determination of copper, zinc and nikel. The relative standard deviation was less than 5% for synthetic samples (n=6). The recoveries of copper, zinc and nikel are in the range of 97.0%~103.2%, 96.3%~104.8% and 95.2%~101.9% respectively. This method has been applied to the simultaneous determination of copper, zinc and nikel in aluminum alloy with satisfactory results.

     

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