Ratio measurements in oxygen determinations: wavelength ratiometry, lifetime discrimination, and polarization detection

被引：21

作者：

Kostov, Y ^{[1
]}

Rao, G ^{[1
]}

机构：

[1] Univ Maryland Baltimore Cty, Dept Chem & Biochem Engn, Baltimore, MD 21250 USA

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 2003年 / 90卷 / 1-3期

关键词：

optical oxygen sensors; radiometric sensor; polarization sensor;

D O I：

10.1016/S0925-4005(03)00040-6

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this work we present ratiometric measurements of oxygen concentrations using a dual-emitting dye. Three different methods for ratio measurements in oxygen sensing are employed. The standard wavelength-ratiometric approach is simple to implement, but the sensor response has significant non-linearity. The frequency discrimination of the lifetimes allows for measurements of dual-emission ratio through a single emission filter. In this case the Stern-Volmer plots are linear. Another option is to use emission polarization. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：139 / 142

页数：4

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