化学学报 ›› 1994, Vol. 52 ›› Issue (4): 391-395. 上一篇    下一篇

研究论文

双指示物质动力学分析法研究Ⅰ.锰(Ⅱ)-乙二胺四乙酸二钠-铬(Ⅵ)催化体系

郑肇生;吴和舟   

  1. 福州大学化学系
  • 发布日期:1994-04-15

Studies on the new kinetic analysis by two indicating stubstances. Ⅰ. manganese (Ⅱ)-ethylenediaminetetraacetic acid disodium salt-potassium dichromate system

ZHENG ZHAOSHENG;WU HEZHOU   

  • Published:1994-04-15

本文报道了双指示物质测定痕量锰的新催化光度法, 探讨了该方法的理论基础,确定了催化体系的适宜反应条件.本办法灵敏度比单指示物质法高6.4倍,用于测定谷物样品中锰.

关键词: 锰, 铬, 痕量分析, EDTA, 福建省自然科学基金, 催化分光光度法

A new catalytic spectrophotometric method for the determination of trace Mn has been developed. The theory of method is discussed. Optimum conditions for the determination of Mn have been established. The sensitivity of method is 6.4 times higher than conventional catalytic spectrometric method. This method has been applied to the determination of Mn in cereal samples.

Key words: MANGANESE, CHROMIUM, TRACE ANALYSIS, CATALYZING SPECTROPHOTOMETRY

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