高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (10): 998.

• 论文 • 上一篇    下一篇

测定痕量硅的超高灵敏显色反应的研究

李士和1, 李生泉1, 刘长松2   

  1. 1. 山西农业大学基础部;
    2. 山西大学化学系
  • 收稿日期:1987-04-22 出版日期:1988-10-24 发布日期:1988-10-24
  • 通讯作者: 李士和

A Study of the Ultra-Sensitive Colour Reaction for Determining Trace Amounts of Silicon

Li Shihe1, Li Shengquan1, Liu Changsong2   

  1. 1. Department of Basis Science, Shanxi Agricultural University, Taigu;
    2. Department of Chemistry, Shanxi University, Taiyuan
  • Received:1987-04-22 Online:1988-10-24 Published:1988-10-24

摘要: 本文详细研究了在阿拉伯树胶存在下,硅钒钼蓝-罗丹明B水相光度法测定硅的新方法.四元络合物的最大吸收峰在595nm处,表观摩尔吸光系数为1.0×106·L·mol-1·cm-1,Sandell灵敏度为2.25×10-5μgSi/cm2。硅含量在0~0.7μg/25mL范围内遵守比尔定律。方法用于水中痕量硅的测定,结果令人满意。

关键词: 痕量硅的测定, 硅钒钼蓝-罗丹明B四元络合物, 分光光度法, 高灵敏显色反应

Abstract: An ultra-sensitive colour reaction based on the multicomponent complex, of siliconvanadomolybdate blue-Rhodamine Bin aqueous phase has been investigated. The maximum absorption wavelength of the complex is at 595nm. Beer's law is obeyed for silicon in the range from o to 0.7μg/25mL. The apparent molar absorptivity is 1.10 ×106L·mol-1·cm-1 at 595nm. This method has been applied to,the determination of trace amount of silicon in different water with satisfactory results.

Key words: Determination of trace amounts of silicon, Multicomponent complex of siliconvanadomolybdate blue-Rhodamine B, Spectrophotometry, Ultra-sensitive colour reaction

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