Journal of Guangdong University of Technology ›› 2006, Vol. 23 ›› Issue (1): 64-66.

• Comprehensive Studies • Previous Articles     Next Articles

Study on the Catalytical Spectrophotometric Determination of Trace Cobalt（Ⅱ） with Co（Ⅱ）-H2O2-Arsenazo M

  

  1. (Faculty of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 510090,China)
  • Online:2006-02-02 Published:2006-02-02

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Abstract: In the medium of dilute H2SO4,the fading reaction of Arsenazo M oxidized by H2O2,which can be catalyzed by Co（Ⅱ）,has been studied.A new method for the catalytic spectrophotometric determination of trace cobalt has been developed.The lineer range is 0～0.08 mg/L and the detection limit is 1.73×10-9 g/L.The proposed method has been used to determine trace cobalt in vilamin B12 with satisfactory results.

Key words: cobalt； hydrogen peroxide； Arsenazo M； catalytic spectrophotomerty；

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