高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (8): 1214.

• 论文 • 上一篇    下一篇

表面等离子体激元共振光化学传感器的研究

赵晓君1, 王珍1, 许汉英2, 梁枫1, 张寒琦1, 金钦汉1   

  1. 1. 吉林大学化学系, 长春, 130023;
    2. 吉林商检局, 长春, 130062
  • 收稿日期:1997-11-27 出版日期:1998-08-24 发布日期:1998-08-24
  • 通讯作者: 金钦汉
  • 作者简介:赵晓君,女,36岁,博士研究生.

Studies on Surface Plasmon Resonace Sensor

ZHAO Xiao-Jun1, WANG Zhen1, XU Han-Ying2, LIANG Feng1, ZHANG Han-Qi1, JIN Qin-Han1   

  1. 1. Department of Chemistry, Jilin University, Changchun, 130023;
    2. Jilin Import and Export Commodities Inspection Bureau, Changchun, 130062
  • Received:1997-11-27 Online:1998-08-24 Published:1998-08-24

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被引次数

72

摘要： 自行设计并组装了一套全波长表面等离子体激元共振光化学传感器实验装置;研究了以银膜为基底的传感器的稳定性、可逆性及干扰情况;在575nm波长处,测定乙醇的灵敏度为4.6×10-4折射率单位,RSD≤1.4%,定量测定范围为0.5%～70%.分析了一些实际样品,结果与标准方法的测定值相吻合.

关键词: 表面等离子体激元共振, 光化学传感器, 乙醇

Abstract: Based on surface plasmon resonance(SPR), a novel optical chemical sensor was developed. Traditionally SPRsensing method was to fix wavelength and modulate angle of incidence light, which needed an expensive and complicated apparatus. The device presented here is a relatively simple and inexpensive. It was designed on the basis of fixing angle of incidence light in the range of the wavelength of 400～800 nm. The reflected light intensity is the minimum at the resonant wavelength, a smaller increase in refractive index of the analyzed solution would cause a clear shift in the SPRreflection spectra toward larger resonant wavelength. The sensitivity to refractive index changes was found to be 4.6×10-4index of refraction units at a wavelength of 575 nm. Some sample were analyzed with the sensor. The results obtained are in good agreement with those obtained with other method. Under the selected experimental conditions, the sensor has a good repeatability(RSD≤1.4).

Key words: Surface plasmon resonace, Optical chemical sensor, Alcohol

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