Open AccessHydrogen peroxide detection with quartz-enhanced photoacoustic spectroscopy using a distributed-feedback quantum cascade laser
Author(s) -
Wei Ren,
Wenzhe Jiang,
Nancy P. Sanchez,
Pietro Patimisco,
Vincenzo Spagnolo,
Chung-En Zah,
Feng Xie,
Lawrence C. Hughes,
Robert J. Griffin,
Frank K. Tittel
Publication year - 2014
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.4863955
Subject(s) - photoacoustic spectroscopy , quantum cascade laser , detection limit , hydrogen peroxide , spectroscopy , cascade , attenuation coefficient , absorption spectroscopy , quartz , absorption (acoustics) , materials science , laser , optoelectronics , analytical chemistry (journal) , chemistry , optics , physics , organic chemistry , chromatography , quantum mechanics , composite material
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 H2O2vapor 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
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom