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Conferences > LACEA > 2002 > SuA > SuA5

Ultra-sensitive ammonia detection for industrial applications using photoacoustic spectroscopy

Michael E. Webber, Michael B. Pushkarsky, Ohan Baghdassarian, L. Ravi Narasimhan, C. Kumar, and N. Patel

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Abstract

An industrial trace-ammonia sensor based on photoacoustic spectroscopy and CO2 lasers has been developed with a minimum detectivity in the parts-per-billion range. This sensor is capable of making simultaneous measurements of up to twenty gas samples with an optically multiplexed arrangement of optoacoustic cells.

© 2002 Optical Society of America

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