高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (6): 627.

• 论文 • 上一篇    下一篇

气相色谱法测定痕量氟方法的研究

马明生, 陈维杰   

  1. 北京师范大学化学系
  • 收稿日期:1986-11-28 出版日期:1988-06-24 发布日期:1988-06-24
  • 通讯作者: 陈维杰

Determination of Trace Amount of Fluoride by Gas Chromatography

Ma Mings heng, Chen Weijie   

  1. Chemistry Department of Beijing Normal University, Beijing
  • Received:1986-11-28 Online:1988-06-24 Published:1988-06-24

PDF (PC)

摘要： 气相色谱法测定有机硅化合物中的痕量氟是60年代末发展起来的,1967年Bock和Semmer[1]用三乙基氯硅烷等有机硅化合物萃取,用半饱和NaHCO3反萃测定氟,并建议可用GC法直接测定三乙基氟硅烷,1968年Fressen等[2]用气相色谱法测定氟,近20年来,气相色谱法测定氟在环境监测、卫生防疫等方面得到应用[3,4]。

关键词: 六甲基二硅胺烷, 氟, 三甲基氟硅烷, 气相色谱

Abstract: A new method for the determination of fluoride ions is proposed. Under acidic condition, trimethylfluorosilane was produced from hexamethyl disilazane and hydrofluoride, and then separated by gas chromatography using a 15% OV-3 column at 100℃. The detective limit is 5 ng/g. Aluminum ion or silicate ion have no interference with the determination even its content is as high as 2000:1 or 400:1 respectively to the fluoride ion.

Key words: Hexamethyl disilazane, Fluoride, Trimethlyfluorosilane, Gas chromatograph

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