高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (8): 891.

• 研究简报 • 上一篇    下一篇

钯(Ⅱ)-α-糠偶酰二肟体系吸附伏安特性的研究及应用

刘高远1, 汪树玉1, 孙天麟1, 陈荣礼2   

  1. 1. 山东师范大学化学系;
    2. 山东大学应用化学系
  • 收稿日期:1989-01-10 出版日期:1990-08-24 发布日期:1990-08-24
  • 通讯作者: 陈荣礼

A Study on the Voltammetry of Palladium-a-Furil Dioxime System and Its Application

Liu Gabyuan1, Wang Shuyu1, Sun Tianlin1, Chen Rongli2   

  1. 1. Department of Chemistry, Shandong Teachers University, Jinan;
    2. Department of Chemistry, Shandong University
  • Received:1989-01-10 Online:1990-08-24 Published:1990-08-24

PDF (PC)

摘要： 二肟试剂可与Ni(Ⅱ)、Pt(Ⅱ)、Pd(Ⅱ)生成不溶于水的稳定配合物,以环己烷二酮二肟、氢氧化钠为底液,催化极谱法测定Pd(Ⅱ)配合物,测量浓度线性范围为5×10-8～5×10-5mol/L,但配合反应需在90℃的水浴中进行,操作不便。

关键词: 伏安法, 配合吸附波, 钯, 痕量分析

Abstract: In 0.065 mol/L Na2CO3/NaHCO3(pH 9.7) buffer solution containing 2.0× 10-6 mol/La-furil dioxime (FD),a sensitive complex wave of Pd( Ⅱ )-FD was observed by using linear sweep voltammetry. The peak height of the wave is directly proportional to the concentration of Pd ( Ⅱ ) in the range 1.1× 10-9-7. 5× 10-8 mol/L. The behaviour of the complex of Pd( Ⅱ ) with FD at mercury electrode was investigated in detail. The molar ratio of Pd( Ⅱ ) to FD is 1:2 . The apparent stability constant is 4. 9 ×1012. This method has been applied satisfactorily to the determination of trace palladium in ores.

Key words: Voltammetry, Adsorptive complex wave, Palladium, Trace analysis

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