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Multi-QCLs based Open-path Sensor for Atmospheric NO, NO2 and NH3 Detections

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Abstract

For monitoring trace pollutions in atmosphere, NO, NO2 and NH3, the three QCLs multiplexing sensor with open-path multi-pass cell was developed. The three pollutions’ minimum-detection-limits of this sensor are less than 0.5ppb within 2 minute integral time.

© 2016 Optical Society of America

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