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Acta Chimica Sinica ›› 1982, Vol. 40 ›› Issue (2): 151-156. Previous Articles     Next Articles

痕量锗在金膜电极上阳极溶出伏安法的研究

邓家祺1, 张庆元2, 王宅中3   

  1. 1. 复旦大学化学系 上海;
    2. 安徽大学化学系 合肥;
    3. 云南大学化学系 昆明
  • 投稿日期:1980-10-20 发布日期:2013-06-03
  • 通讯作者: 邓家祺

A STUDY OF ANODIC STRIPPING VOLTAMMETRY OF TRACE GERMANIUM ON GOLD FILM ELECTRODE

DENG JIA-QI1, ZHANG QING-YUAN2, WANG ZHAI-ZHONG3   

  1. 1. Chemistry Department, Fudan University, Shanghai;
    2. Chemistry Department, Anhui University, Hefei;
    3. Chemistry Department, Yunnan University, Kunming
  • Received:1980-10-20 Published:2013-06-03

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The anodic stripping voltammetry of trace amounts of germanium on the gold film deposited on a glassy graphite electrode was reported.In boric acid buffer solution, at pH 10, two peaks of stripping current of germanium appear at -0.90 V and -0.17V(vs.1N Ag-AgCl)respeotively, the first peak is used for quantitative analysis.A linear relationship exists between the peak height and the concentration of germanium in the range of 1.0×10-8～1.0×10-6M.The detection limit is about 5.0×10-9M (or 0.36 ppb).We have further studied the electrode process by means of triangle cyclic voltammetry and proved that the electrode reaction is irreversible and show that the first peak is due to the oxidation of metallic germanium to divalent germanium ion and the second peak due to the oxidation of divalent ions to tetravalent ions.The doposition of germanium on the gold film electrode is possibly due to the formation of an alloy of germanium and gold.