高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (12): 1070.

• 研究论文 • 上一篇    下一篇

阳极溶出催化伏安法测定微量钯的研究

许宏鼎, 郭英兰, 刘再新   

  1. 吉林大学化学系
  • 收稿日期:1984-09-08 出版日期:1985-12-24 发布日期:1985-12-24

Determination of Trace Palladium by Anodic Stripping Catalytic Voltammetry

Xu Hongding, Guo Yinglan, Liu Zaixin   

  1. Department of Chemistry, Jilin University, Changchun
  • Received:1984-09-08 Online:1985-12-24 Published:1985-12-24

摘要: 本文提出了用阳极溶出催化伏安法测定微量钯的方法,找到了灵敏度较高的富集底液和催化体系,钯在3×1010—1×10-7M浓度范围内呈线性关系,最低检出浓度为1.2×10-10M。

Abstract: Anew method for determination of trace palladium by anodic stripping-catalytic voltammetry has been established.The Pd(Ⅱ) was deposited with Hg (Ⅱ) on aglassy carbon electrode in NaCl-HCl-HgCl2 base-solution at -0.80Vfor several minutes.After the depositing, the glassy-carbon electrode was removed itno another cell containing a catalytic system, HClO4-HCl-SnCl2.Astrippihg-catalytic peak of Pd at 0.40V(vs.Ag/AgCl) appeared when the potential was scanned forward positive.The height of the peak was linearly increased with the concentration of Pd(Ⅱ) over the range of 3 × 10-10- 1×10-7M.The detection limit was 1.2× 10-10M.The relative standard derivations were less than ± 7.5%.

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