Characterization of phosphorescence oxygen sensor based on erythrosin B in sol-gel silica in wide pressure and temperature ranges

被引：33

作者：

Lam, SK ^{[1
]}

Chan, MA ^{[1
]}

Lo, D ^{[1
]}

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2001年 / 73卷 / 2-3期

关键词：

oxygen sensor; fiber optic; erythrosin B; sol-gel; silica;

D O I：

10.1016/S0925-4005(00)00695-X

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Room temperature phosphorescence emission of erythrosin B in sol-gel silica is studied over the oxygen pressure range from 10(-6) to 1000 mbar. Quenching by oxygen is significant over the entire range. The Stern-Volmer (SV) intensity data can be very well fitted using the two-site model. The temperature dependence of the phosphorescence and the delayed fluorescence are examined from -173 to 200 degreesC at an oxygen pressure of 0.015 mbar. The phosphorescence and delayed fluorescence show opposite trends of temperature dependence, which can be exploited for temperature compensation of the sensor probe. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：135 / 141

页数：7

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