高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (S1): 94.

• Electroanalytical Chemistry • 上一篇    下一篇

Catalytic Kinetic Polarographic Determination of Trace Amount of Indium

ZHU Hua-Yu1, WANG Shou-Qing1, XIN Yan-Huai1, JIANG Xiu-Quan1   

  1. 1. Department of Chemistry, Linyi Teacher's College, Linyi, Shandong 276005, P. R. China;
    2. Department of Chemistry, Zhongshan University, Guangzhou 510275, P. R. China
  • 出版日期:1999-12-31 发布日期:1999-12-31
  • 基金资助:

    current address:shangdong weifang education college

Catalytic Kinetic Polarographic Determination of Trace Amount of Indium

ZHU Hua-Yu1, WANG Shou-Qing1, XIN Yan-Huai1, JIANG Xiu-Quan1   

  1. 1. Department of Chemistry, Linyi Teacher's College, Linyi, Shandong 276005, P. R. China;
    2. Department of Chemistry, Zhongshan University, Guangzhou 510275, P. R. China
  • Online:1999-12-31 Published:1999-12-31
  • Supported by:

    current address:shangdong weifang education college

摘要:

The method of polarography for determination of trace In(III) had been reported by reference(l-2), However, The method of catalytic kinetic polarography has not been reported. Author discovered that trace indium(III) cold catalyze the discoloring oxidizing reaction of methyl orange by potassium bromate in 0.03mol/L H2SO4——0.25mol/L NH3.H2O supporting electrolyte, methyl orange exhibits a sensitive polarography wave at -0.45V(vs.SCE), The change in methyl orange concentration is traced by polarography. Hence, a new catalytic kinetic polarography method for determination of trace indium has been established. The method was used to determined trace indium in pure metallic zine with satisfactory results.

Abstract:

The method of polarography for determination of trace In(III) had been reported by reference(l-2), However, The method of catalytic kinetic polarography has not been reported. Author discovered that trace indium(III) cold catalyze the discoloring oxidizing reaction of methyl orange by potassium bromate in 0.03mol/L H2SO4——0.25mol/L NH3.H2O supporting electrolyte, methyl orange exhibits a sensitive polarography wave at -0.45V(vs.SCE), The change in methyl orange concentration is traced by polarography. Hence, a new catalytic kinetic polarography method for determination of trace indium has been established. The method was used to determined trace indium in pure metallic zine with satisfactory results.

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