高等学校化学学报

高等学校化学学报 ›› 1994, Vol. 15 ›› Issue (3): 370.

• 研究简报 • 上一篇    下一篇

感应耦合等离子体中原子发射光谱的非局部热平衡(Ⅱ)──非沙哈电离平衡过程

杨芃原, 王小如, 应海, 王志勇   

  1. 厦门大学化学系、近代分析化学研究所, 厦门, 361005
  • 收稿日期:1993-03-29 修回日期:1993-08-15 出版日期:1994-03-24 发布日期:1994-03-24
  • 通讯作者: 杨芃原,男,44岁,教授,博士.
  • 作者简介:杨芃原,男,44岁,教授,博士.
  • 基金资助:

    国家自然科学基金;国家教育委员会归国留学人员科研启动基金

Non-Local Thermal Equilibrium in ICP-AES Ⅱ──Non-Saha Ionization Equilibrium Process

YANG Peng-Yuan, WANG Xiao-Ru, YING Hai, WANG Zhi-Yong   

  1. Department of Chemistry, Institute of Modern Analytical Chemistry, Xiamen University, Xiamen, 361005
  • Received:1993-03-29 Revised:1993-08-15 Online:1994-03-24 Published:1994-03-24

PDF (PC)

被引次数

2

关键词: ICP-AES, 非沙哈电离平衡, 双极扩散过程

Abstract: Three parameters have been introduced to modify the Saha ionization equilibrium in a spectrochemical ICP.These parameters provide the necessary modifications for the temperature difference between heavier particles and electrons, for the emission from an opticalthin ICP, and for the ambipolar diffusion of ion-electron pairs, respectively.It is confirmed that the overpopulation of electron number density in the central channel of ICPis mainly caused by the ambipolar diffusion process.As a consequence, this process enhances the charge exchange process between argon ions and analyte atoms in the central channel,which is principally responsible for the overpopulated analyte ion number density.

Key words: ICP-AES, Non-Saha ionization equilibrium, Ambipolar diffusion

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