| 基于染料吸收的光导纤维SO2传感器 |
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| 引用本文： | 张志琪,章竹君. 基于染料吸收的光导纤维SO2传感器[J]. 化学学报, 1987, 45(5): 497-499 |
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| 作者姓名： | 张志琪 章竹君 |
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| 作者单位： | 陕西师范大学化学系 |
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| 摘 要： | 建立于气液两相平衡的气敏电极已为人们所熟知。近年来研究了气液两相平衡的光纤化学传感器。作者之一曾报道了CO_2荧光传感器。本文在文献基础上对基于染料吸收的光纤SO_2传感器进行了探讨性的研究。光纤SO_2传感器在其结构上与气敏电极相似,所不同是采用感应膜光信号变化的特征而不用指示电极进行测定。由于测定方法不同才使它具有光纤化学传感器的特殊优点。
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| 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 |
Sulfur dioxide optic sensor based on absorption of immobilized dye |
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| ZHANG ZHIQI,ZHANG ZHUJUN. Sulfur dioxide optic sensor based on absorption of immobilized dye[J]. Acta Chimica Sinica, 1987, 45(5): 497-499 |
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| Authors: | ZHANG ZHIQI ZHANG ZHUJUN |
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| Abstract: | 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. |
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| Keywords: | SULFUR DIOXIDE OPTICAL WAVEGUIDE FIBER SENSORS GAS SENSITIVE ELECTRODE OPTICAL FIBER DEVICES DYE ABSORPTION |
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