高等学校化学学报

高等学校化学学报 ›› 1984, Vol. 5 ›› Issue (2): 267.

• 研究简报 • 上一篇    下一篇

离子选择电极电位滴定法有机化合物中硼的快速微量分析

王昌益, 陈兴荣   

  1. 云南大学化学系
  • 收稿日期:1982-08-27 出版日期:1984-04-24 发布日期:1984-04-24

ISE-POTENTIOMETRIC TITRATION FOR RAPID MICRO ANALYSIS OF ORGANIC BORON

Wang Changyi, Chen Xingrong   

  1. Department of Chemistry, Yunnan University, Kunming
  • Received:1982-08-27 Online:1984-04-24 Published:1984-04-24

PDF (PC)

被引次数

2

摘要： 有机硼化合物在分解后通常转化为硼酸,需以甘露糖醇使其形成络合物,再用标准氢氧化钠溶液滴定[1]。氧瓶分解法分解有机硼化合物,常需在样品燃烧前于样品内加入蔗糖[2]、氢氧化钾[3]或EDTA二钠盐[4]。Gadson等[5]在含硼无机溶液中加入少量10％氢氟酸,10分钟内形成BF4-,然后用流动载体氟硼酸根离子选择电极直接电位法进行测定。由此,我国刘成梁等[4]首次提出氟硼酸根离子选择电极标准添加法,应用于有机硼元素微量分析。

Abstract: The quartz oxygen flask method combined with the BF4- ISE-CETAB potentiometric titration has been used for the microdetermination of organic boroncompounds.This method is simple and rapid and the absolute error is within 0.3%. The presence of normal amount of N,S,P,F,Cl,Br,I, and As does not interfere to the analytical results.

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