ELLIPSOMETRIC SENSOR FOR H2S, SO2, CL2 DETERMINATION IN AIR

被引：18

作者：

BRUDZEWSKI, K

机构：

[1] Warsaw University of Technology, Department of Chemistry, 00-664 Warsaw

来源：

SENSORS AND ACTUATORS B-CHEMICAL | 1992年 / 9卷 / 01期

关键词：

741; Light; Optics and Optical Devices - 801 Chemistry - 804 Chemical Products Generally - 931 Classical Physics; Quantum Theory; Relativity;

D O I：

10.1016/0925-4005(92)80194-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Optical sensors designed at Warsaw University of Technology operate on the principle of comparison ellipsometry, with self-compensation of changes of the polarization state. In this paper, a sensor for H2S, SO2 or Cl2 gases, based on thin films of silver as 'test' and 'reference' mirrors, is presented. Silver is chosen as a reactive material because of its high reflectivity and its high reactivity with compounds of sulfur and chlorine. However, changes in the reflectivity of silver are irreversible and regeneration of the 'test' mirrors is necessary.

引用

页码：59 / 62

页数：4