高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (S1): 94.
• Electroanalytical Chemistry • 上一篇 下一篇
ZHU Hua-Yu1, WANG Shou-Qing1, XIN Yan-Huai1, JIANG Xiu-Quan1
ZHU Hua-Yu1, WANG Shou-Qing1, XIN Yan-Huai1, JIANG Xiu-Quan1
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.
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