高等学校化学学报

高等学校化学学报 ›› 1990, Vol. 11 ›› Issue (1): 15.

• 研究论文 • 上一篇    下一篇

双联光声传感器和差分池在液体光声检测中的应用

左伯莉, 邓延倬, 曾云鹗   

  1. 武汉大学分析测试中心、化学系
  • 收稿日期:1988-07-08 出版日期:1990-01-24 发布日期:1990-01-24
  • 通讯作者: 邓延悼
  • 基金资助:

    国家自然科学基金

Application of Double-Probe Transducer and Differential Cell to Photoacoustic Detection of Liquid

Zuo Boli, Deng Yanzhuo, Zeng Yun'e   

  1. Centre of Analysis and Testing, Department of Chemistry, Wuhan University, Wuhan
  • Received:1988-07-08 Online:1990-01-24 Published:1990-01-24

PDF (PC)

被引次数

2

摘要： 利用双联传感器得到光声信号的叠加作用,可提高光声检测灵敏度或扣除溶液背景吸收。以亚硝基R盐测定钴为例,得到最低检测浓度为0.3ng/mL,相当于4.25×10-5的吸收。

关键词: 光声, 激光, 传感器

Abstract: The double-probe transducer and differential cell for photoacoustic detection of liquid were suggested. The overlapped PAsignals, obtained by using such transducer, significantly increase sensitivity or effectually eliminate PAbackground signal due to a solvent. Application of this method to detection of Co2+ by nltroso-R-salt reagent at 532 nm was demontrated. The lowest determination concentration is 0. 3 ng/mL, correspounding to 4. 25×10-5 in absorptivity.

Key words: Photoacoustic, Laser, Transducer

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