高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (9): 1401.

• 论文 • 上一篇    下一篇

高灵敏度二氧化硫光纤传感器的研究

许汉英1, 王柯敏2, 王大宁1, 李庆才1   

  1. 1. 吉林进出口商品检验局, 长春, 130062;
    2. 湖南大学化学化工学院, 长沙, 410082
  • 收稿日期:1997-12-31 出版日期:1998-09-24 发布日期:1998-09-24
  • 通讯作者: 许汉英,男,36岁,工程师,硕士研究生.
  • 作者简介:许汉英,男,36岁,工程师,硕士研究生.
  • 基金资助:

    中华人民共和国进出口商品检验局科研基金资助课题.

Studies on a Fiber Optical Sensor for Sulfur Dioxide with a High Sensitivity

XU Han-Ying1, WANG Ke-Min2, WANG Da-Ning1, LI Qing-Cai1   

  1. 1. Jilin Import and Export Commodities Inspection Bureau, Changchun, 130062;
    2. College of Chemical and Engineering, Hunan University, Changsha, 410082
  • Received:1997-12-31 Online:1998-09-24 Published:1998-09-24

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被引次数

19

摘要： 以奎宁为荧光试剂,通过改变传感液膜的组成及采用非稳态测量法,研制成功高灵敏度的二氧化硫光纤传感器,该传感器的线性响应范围为3.1×10-7～7.8×10-5mol/L,检测限达1.6×10-7mol/L.研究了内充液中NaHSO3浓度、内充液层厚度对该光纤传感器动态响应信号的影响,用该传感器测定了葡萄酒中游离二氧化硫的含量,结果令人满意.

关键词: 光纤传感器, 二氧化硫, 动态测定

Abstract: The present paper decribes a fiber optical sensor with a high sensitivity to determine sulfur dioxide. In order to improve the sensitivity, a non-steady state approach was adopted and the sensor response was recorded after the reaction being proceeded for 1 or 2 min. Effects of NaHSO3 concentration and thickness of sensing layer of liquid on the sensor response were investigated. Agood linearity in a wide concentration range of sulfur dioxide, 3.1×10-7 ～7.8×10-5 mol/L, was displayed. The detection limit was 1.6×10-7 mol/L. Using the sensor to determine the amounts of SO2 in the wine, the results were in good agreement with the results obtained by the standard method.

Key words: Fiber optical sensor, Sulfur dioxide, Kinetic measurement

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