食品科学 ›› 2005, Vol. 26 ›› Issue (7): 183-184.

• 分析检测 • 上一篇    下一篇

负动力学光度法测定痕量钼的研究

 高杰   

  1. 重庆师范大学化学系
  • 出版日期:2005-07-15 发布日期:2011-09-19

Kinetic Spectrophotometric Determination of Trace Molybdenum by Decotoring Inhibition Reaction

 GAO  Jie   

  1. Department of Chemistry, Chongqing Normal University
  • Online:2005-07-15 Published:2011-09-19

摘要: 研究发现在酸性介质中,Mo(VI)对过氧化氢氧化酸性铬蓝k褪色的反应有较强的阻抑作用,据此建立了阻抑动力学光度法测定痕量钼的方法。方法线性范围为0~3.4μg/25ml,检出限为3.1×10~(-10)g/ml。方法已用于蔬菜中钼的测定,结果满意。

关键词: 动力学光度法, 钼, 酸性铬蓝k

Abstract: It was reported that trace amounts of Mo(VI) could inhibit the decoloring reaction of acid chrome blue k by hydrogenperoxide in acidic condition.The linear range of the method was 0~3.4μg/25ml for Mo(VI), with detection limit of 3.1×10g/ml. The proposed method has been applied to determination of trace molybdenum in vegetables with recovery of 97%~102%.

Key words: kinetic spectrophotometry, molybdenum, chrome blue k