Hydrogen peroxide detection with quartz-enhanced photoacoustic spectroscopy using a distributed-feedback quantum cascade laser

A quartz-enhanced photoacoustic spectroscopy sensor system was developed for the sensitive detection of hydrogen peroxide (H2O2) using its absorption transitions in the v6 fundamental band at ∼7.73 μm. The recent availability of distributed-feedback quantum cascade lasers provides convenient access...

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Bibliographic Details
Published in:Applied physics letters 2014-01, Vol.104 (4)
Main Authors: Ren, Wei, Jiang, Wenzhe, Sanchez, Nancy P., Patimisco, Pietro, Spagnolo, Vincenzo, Zah, Chung-en, Xie, Feng, Hughes, Lawrence C., Griffin, Robert J., Tittel, Frank K.
Format: Article
Language:English
Subjects:
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
Absorptivity
Applied physics
CALIBRATION
CONCENTRATION RATIO
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
DETECTION
FEEDBACK
HYDROGEN PEROXIDE
Hydrogen peroxide vapor
Hydrogen storage
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
NOISE
PHOTOACOUSTIC SPECTROSCOPY
Quantum cascade lasers
QUARTZ
SENSITIVITY
SENSORS
SOLID STATE LASERS
Spectrum analysis
VAPORS
WATER
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Summary:A quartz-enhanced photoacoustic spectroscopy sensor system was developed for the sensitive detection of hydrogen peroxide (H2O2) using its absorption transitions in the v6 fundamental band at ∼7.73 μm. The recent availability of distributed-feedback quantum cascade lasers provides convenient access to a strong H2O2 absorption line located at 1295.55 cm−1. Sensor calibration was performed by means of a water bubbler that generated titrated average H2O2 vapor concentrations. A minimum detection limit of 12 parts per billion (ppb) corresponding to a normalized noise equivalent absorption coefficient of 4.6 × 10−9 cm−1W/Hz1/2 was achieved with an averaging time of 100 s.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4863955