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- W4297412116 abstract "A mid-infrared laser-based sensor is designed and demonstrated for trace detection of benzene, acetylene, and carbon dioxide at ambient conditions. The sensor is based on a distributed feedback quantum cascade lase and a multidimensional liner (DFB-QCL) emitting near 14.84 um. Tunable diode laser absorption spectroscopy (TDLAS) and a multidimensional linear regression algorithm are employed to enable interference-free measurements of the target species. The laser wavelength was tuned over 673.8-675.1 cm-1 by a sine-wave injection current (1 kHz scan rate). Minimum detection limits of 0.11, 4.16, and 2.96 ppm were achieved for benzene, acetylene, and carbon dioxide, respectively. The developed sensor is insensitive to interference from overlapping absorbance spectra, and its performance was demonstrated by measuring known mixture samples prepared in the lab. The sensor can be used to detect tiny leaks of the target species in petrochemical facilities and to monitor air quality in residential and industrial areas." @default.
- W4297412116 created "2022-09-28" @default.
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- W4297412116 date "2022-09-23" @default.
- W4297412116 modified "2023-09-29" @default.
- W4297412116 title "A Selective Benzene, Acetylene, and Carbon Dioxide Sensor in the Fingerprint Region" @default.
- W4297412116 doi "https://doi.org/10.48550/arxiv.2209.11832" @default.
- W4297412116 hasPublicationYear "2022" @default.
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