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Application of Cavity Enhanced Absorption Spectroscopy in Detection of Selected Gas Pollutants

Authors:
Zbigniew Bielecki
Jacek Wojtas
Janusz Mikolajczyk
Sylwester Chojnowski

Keywords: laser absorption spectroscopy, cavity enhanced spectroscopy, CEAS, gas sensors, QCL

Abstract:
The paper presents applications of cavity enhanced absorption spectroscopy in detection of nitrogen dioxide (NO2), nitrous oxide (N2O), nitric oxide (NO) and carbon monoxide (CO). In the constructed portable sensor of nitrogen dioxide, blue-violet laser was used. The sensor sensitivity reaches a level of single ppb. Additionally, successful monitoring of N2O, NO and CO was demonstrated in the laboratory air. These sensors required high precision mid-infrared spectroscopy. All of the developed sensors are able to measure concentration at the ppb level using quantum cascade lasers. It makes it possible to apply these instruments in monitoring the atmosphere quality.

Pages: 83 to 84

Copyright: Copyright (c) IARIA, 2015

Publication date: August 23, 2015

Published in: conference

ISSN: 2308-3514

ISBN: 978-1-61208-426-8

Location: Venice, Italy

Dates: from August 23, 2015 to August 28, 2015