高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (5): 519.

• 论文 • 上一篇    下一篇

利用H2O2-KI-鲁米诺体系化学发光法测定痕量钼

章竹君, 吕九如, 张新荣, 梁亚明   

  1. 陕西师范大学化学系
  • 收稿日期:1986-11-01 出版日期:1988-05-24 发布日期:1988-05-24
  • 通讯作者: 章竹君

Chemiluminescence Determination of Trace Molybdenum(Ⅵ) by H2O2-I--Luminol System

Zhang Zhujun, Lu Jiuru, Zhang Xinrong, Liang Yarning   

  1. Department of Chemistry, Shaanxi Normal University, Xi'an
  • Received:1986-11-01 Online:1988-05-24 Published:1988-05-24

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摘要： 钼(Ⅵ)可以催化H2O2氧化I-的反应,生成的I2在碱性水溶液中能氧化鲁米诺而产生化学发光[1],本文将这两个反应结合起来,建立了铝的化学发光分析法,方法有较高的灵敏度,检出限为6×10-10g/cm3Mo,测定的相对标准偏差小于6%,工作曲线的线性范围是1×10-9～1×10-7g/cm3Mo,用EDTA作掩蔽剂,排除了大多数金属离子的干扰,方法有较好的选择性,应用此法对一些粮食样品中的痕量钼进行了测定,结果比较满意。

关键词: 化学发光, 偶合反应, 量痕分析, 钼

Abstract: A inderect chemiluminescence method for determination of trace Mo(Ⅵ) has been presented in this paper. The principle of the method is that the reaction of I- with H2O2 is accelereted by Mo(Ⅵ) to produce I2, and I2 oxidize luminol to produce chemiluminescence. The detection limit is 6×10-10g/cm3 Mo. The linear arnge of the calibration cuvers is 1 × 10-9~1×10-7g/cm3 Mo. The relative standard deviation is less than 6%. This method has been used for the .determination of trace Mo in the grains.

Key words: Chemiluminescence, Coupled reaction, Trace analysis, Molybdenum

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