高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (12): 1581.

• 研究论文 • 上一篇    下一篇

火焰原子吸收分析中表面活性剂对锰吸收讯号的增感效应及机理

汪福意, 万家亮, 卢汉兵, 夏望   

  1. 华中师范大学化学系, 武汉, 430070
  • 收稿日期:1990-09-11 出版日期:1991-12-24 发布日期:1991-12-24
  • 通讯作者: 万家亮

Mechanism of Enhancement of Surfactants on Manganese in Flame Atomic Absorption Spectrometry

Wang Fu-yi, Wan Jia-liang, Lu Han-bing, Xia Wang   

  1. Department of Chemistry, Huazhong Normal University, Wuhan, 430070
  • Received:1990-09-11 Online:1991-12-24 Published:1991-12-24

摘要: 提出了一种新的增感机理:在表面活性剂的cmc前,气溶腔形成过程中被测离子在小液滴上富集产生增惑;cmc后富集作用减小,但被测离子和表面活性剂形成胶团化物产生新的增感,火焰部分表面活性剂的不完全燃烧增强了火焰的还原性是增感因素之一。

关键词: 火焰原子吸收光谱, 表面活性剂, 增惑效应,

Abstract: Anew enhancing mechanism of surfactants in FAASis proposed. This paper narrates that below the cmc of surfactants, the enhancement results primarily from enrichment of analyte in small droplets of aerasols because of the surface effect of surfactants, and above the cmc, the enrichment is getting less and less, and the new enhancement results from the binding of analyte to micellae in bulk. And in flame, amplifying of reductive environment because of the incomplete burning of surfactants is always one of the enhancing factors.

Key words: Flame atomic absorption spectrometry, Surfactants, Enhancing effect, Manganese

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