Pangerl, Jonas and Moser, Elisabeth and Mueller, Max and Weigl, Stefan and Jobst, Simon and Rueck, Thomas and Bierl, Rudolf and Matysik, Frank-Michael (2023) A sub-ppbv-level Acetone and Ethanol Quantum Cascade Laser Based Photoacoustic Sensor-Characterization and Multi-Component Spectra Recording in Synthetic Breath. PHOTOACOUSTICS, 30: 100473. ISSN 2213-5979
Full text not available from this repository. (Request a copy)Abstract
Trace gas analysis in breath is challenging due to the vast number of different components. We present a highly sensitive quantum cascade laser based photoacoustic setup for breath analysis. Scanning the range between 8263 and 8270 nm with a spectral resolution of 48 pm, we are able to quantify acetone and ethanol within a typical breath matrix containing water and CO2. We photoacoustically acquired spectra within this region of mid-infrared light and prove that those spectra do not suffer from non-spectral interferences. The purely additive behavior of a breath sample spectrum was verified by comparing it with the independently acquired single component spectra using Pearson and Spearman correlation coefficients. A previously presented simulation approach is improved and an error attribution study is presented. With a 30 detection limit of 6.5 ppbv in terms of ethanol and 250 pptv regarding acetone, our system is among the best performing presented so far.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | EXHALED BREATH; SPECTROSCOPY; SPECTROMETER; IR; Photoacoustic spectroscopy; Quantum cascade laser; Spectral simulation; Breath analysis; Acetone |
| Subjects: | 500 Science > 540 Chemistry & allied sciences 600 Technology > 600 Technology (Applied sciences) |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Instrumentelle Analytik (Prof. Frank-Michael Matysik) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 30 Jan 2024 10:06 |
| Last Modified: | 30 Jan 2024 10:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/59327 |
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