高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (1): 33.

• 论文 • 上一篇    下一篇

交叉束激光热透镜光度法的研究

曹继正1, 邓延倬1, 罗庆尧2   

  1. 1. 武汉大学分析测试中心, 430072;
    2. 武汉大学化学系
  • 收稿日期:1989-02-20 出版日期:1991-01-24 发布日期:1991-01-24
  • 通讯作者: 邓延倬
  • 基金资助:

    国家自然科学基金

Studies on Crossed-beam Laser Thermal Lens Spectrophotometry

Cao Ji-zheng1, Deng Yan-zhuo1, Luo Qing-yao2   

  1. 1. The Centre of Analysis and Testing, Wuhan University, Wuhan, 430072;
    2. Department of Chemistry, Wuhan Unweristy, Wuhan
  • Received:1989-02-20 Online:1991-01-24 Published:1991-01-24

PDF (PC)

被引次数

8

摘要： 激光热透镜光度法是一种高灵敏度光谱分析技术.本文用探测束非聚焦的He-Ne激光双光束交叉热透镜技术研究了影响热透镜灵敏度的几个因素,并对远场光斑截面内信号强度分布进行了测定,对实验结果进行了讨论.

关键词: 激光, 热透镜, 钴

Abstract: A crossed-beam thermal lens technique, in which the unfocused probe beam crosses the pump beam at a certain angle within a homogeneous sample, was used to study the influences of thermal lens position effect, the size of heating beam focal spot, the modulation frequencies and the crossed angles on the thermal lens signals, and the thermal lens signal profile in the far-field. Under optimum conditions at right-crossed-beam, a PAN-Co(Ⅲ) complex in chloroform was determined, the minimal detectable absorbance is 1. 17× 10-6, corresponding to 1. 7 ng/mL Co2+.

Key words: Laser, Thermal lens, Cobalt

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