高等学校化学学报

高等学校化学学报 ›› 1988, Vol. 9 ›› Issue (6): 556.

• 论文 • 上一篇    下一篇

溶液中三价稀土Ho3+、Nd3+的脉冲激光光声光谱研究及其测定

闫宏涛, 邓延倬, 曾云鹗   

  1. 武汉大学化学系, 分析测试中心
  • 收稿日期:1986-12-17 出版日期:1988-06-24 发布日期:1988-06-24
  • 通讯作者: 闫宏涛;邓延倬
  • 基金资助:

    国家自然科学基金

Photoacoustic Spectrometry Investigation, and Determination of Rare Earth Ions Ho3+ arid Nd3+ in Liquid

Yan Hongtao, Deng Yanzhuo, Zeng Yun'e   

  1. Department of Chemistry and the Centre of Analysis and Testing, Wuhan University, Wuhan
  • Received:1986-12-17 Online:1988-06-24 Published:1988-06-24

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摘要： 采用自制的液体光声传感器,研究了在620～665nm波长范围不同溶剂中稀土Ho3+的光谱精细结构;探讨了入射激光脉冲能量、测试温度以及各种与水混溶的有机溶剂对光声信号强度的影响。在乙腈水溶液中测定稀土Ho3+、Nd3+检测限分别为5×10-8mol/L和1.0×10-7mol/L,相应的吸光度为1.5×10-7和6.3×10-7。

关键词: 激光, 光声光谱, 稀土, 痕量分析

Abstract: The applications of the pulsed laser photoacoustic spectroscopy. to the rare earth spectra and trace analysis are presented. Ahome-made high sensitive photoacoustic transducer was used to. detect the photoacoustic signal in liquid. The high resolution photoacoustic spectra of Ho3+ ion in different, solvents, were mea-sured and compared with its absorption spectrum. It also discusses how the phqto-acoustic sensitivity is affected by laser pulse energy, temperature of measurement and the organic solvents which can be mixed with water. The trivalent rare earth ions Ho3+ and Nd3+ in aqueous acetonitrile solution had been determined. The detection limit is 5×10-8mol/Lfor Ho3+,1.0×10-7mol/Lfor Nd3+, and corresponds to the absor.bance of 1.5×10-7 and 6.3×10-7, respectively.

Key words: Laser, Photoacoustic Spectroscopy, Rare earth, Trace analysis

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