高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (S1): 361.

• Molecular Spectroscopy • 上一篇    下一篇

A Novel Kinetic Method for the Determination of Cobalt(Ⅱ) in Vitamin Bl2

LI Zhu-Yun   

  1. Department of Materials Engineering, Zibo College, Zibo, 255200, P. R. China
  • 出版日期:1999-12-31 发布日期:1999-12-31

A Novel Kinetic Method for the Determination of Cobalt(Ⅱ) in Vitamin Bl2

LI Zhu-Yun   

  1. Department of Materials Engineering, Zibo College, Zibo, 255200, P. R. China
  • Online:1999-12-31 Published:1999-12-31

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摘要：

Cobalt(Ⅱ) in NaOH(a.q.) can catalyze the decolorizing reaction resulting from the oxidation of dibromohydoxylphenylfluorone(DBH-PF) by H2O2(a.q.). A new catalytic spectrophotometry for determining trace Cobalt(Ⅱ) was obtained. The method has been used to determine trace Cobalt(Ⅱ) in Vitamin B12 samples. The sensitivity of this method is higher than the references, and the selectivity of the method is better than the references too.

Abstract:

Cobalt(Ⅱ) in NaOH(a.q.) can catalyze the decolorizing reaction resulting from the oxidation of dibromohydoxylphenylfluorone(DBH-PF) by H2O2(a.q.). A new catalytic spectrophotometry for determining trace Cobalt(Ⅱ) was obtained. The method has been used to determine trace Cobalt(Ⅱ) in Vitamin B12 samples. The sensitivity of this method is higher than the references, and the selectivity of the method is better than the references too.

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