高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (2): 180.

• 研究论文 • 上一篇    下一篇

基于荧光熄灭的二氧化硫选择性光化学敏感膜的研究

曾恚恚, 王柯敏, 秦臻, 俞汝勤   

  1. 湖南大学化学化工系, 长沙 410082
  • 收稿日期:1992-04-01 修回日期:1992-09-03 出版日期:1993-02-24 发布日期:1993-02-24
  • 通讯作者: 曾恚恚
  • 基金资助:

    国家教育委员会优秀年轻教师基金;国家自然科学基金

A Sulphur Dioxide-Selective Sensing Membrane Based on Fluorescence Quenching

ZENG Hui-Hui, WANG Ke-Min, QIN Zhen, YU Ru-Qin   

  1. Department of Chemistry and Chemical Engineering, Htman University, Changsha, 410082
  • Received:1992-04-01 Revised:1992-09-03 Online:1993-02-24 Published:1993-02-24

PDF (PC)

被引次数

16

摘要： 本文基于二氧化硫对固定于增塑的聚氯乙烯膜上的芳香稠环化合物蒽的荧光熄灭,研制了二氧化硫选择性光化学敏感膜。经过组成优化的敏感膜测定二氧化硫的浓度范围为6.59×10-3～5.23×10-1mol/L,校正曲线与理论推导的模拟曲线相吻合,且荧光信号具有较高的重现性,信号响应时间为5～30s。

关键词: 荧光熄灭, 二氧化硫, 光化学敏感膜

Abstract: Anew reversible optical sensing membrane for the determination of sulphur dioxide based on fluorescence quenching of anthracene dissolved in plasticized poly(vinylchloride) has been developed.This chemical recognition process is accompanied by a change in the fluorescence spectrum of anthracene.With the optimum sensing membrane described, sulphur dioxide in sample solution from 6.59×10-3 mol/Lto 5.23×10-1 mol/Lcan be determined.The calibration curve for sulphur dioxide shows a good correlation with the theoretically derived formulae and thus confirms the theoretically expected behavior.Besides a high reproducibility of the optical signals, the very short response time between 5 to 30 s was realized.The optical sensing membrane presented exhibits a good selectivity for sulphur dioxide.

Key words: Fluorescence quenching, Sulphur dioxide, Optical chemical sensing membrane

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