化学学报 ›› 1987, Vol. 45 ›› Issue (5): 497-499. 上一篇    下一篇

研究论文

基于染料吸收的光导纤维SO2传感器

张志琪;章竹君   

  1. 陕西师范大学化学系
  • 发布日期:1987-05-15

Sulfur dioxide optic sensor based on absorption of immobilized dye

ZHANG ZHIQI;ZHANG ZHUJUN   

  • Published:1987-05-15

关键词: 二氧化硫, 光导纤维, 传感器, 气敏电极, 光纤器件, 染料吸附

A SO2 fiber optic sensor was prepared It consists of combination of a pH optic sensor based on absorption of immobilized dye (bromphenol blue, l = 624 nm, or bromcresol green, l = 600 nm) and a piece of silicone rubber membrane with a reservoir of HSO3- solution When SO2 diffuses across the membrane, the pH of internal HSO3- solution is changed. The observed pH change is a measure of the total SO2 in the sample. Agreement between theory and experiment is good. The response range depends on the concentration of HSO3- in the internal solution and the pH range to which the pH optic sensor can respond.

Key words: SULFUR DIOXIDE, OPTICAL WAVEGUIDE FIBER, SENSORS, GAS SENSITIVE ELECTRODE, OPTICAL FIBER DEVICES, DYE ABSORPTION

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