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Humboldt-Universität zu Berlin - Faculty of Mathematics and Natural Sciences - Optical Systems

Humboldt-Universität zu Berlin | Faculty of Mathematics and Natural Sciences | Department of Physics | Optical Systems | Publications | Qualitative and quantitative analysis of terahertz gas-phase spectroscopy using independent component analysis

Zhijie Li, Nick Rothbart, Xiaojiao Deng, Hua Geng, Xiaoping Zheng, Philipp Neumaier, and Heinz-Wilhelm Hübers (2020)

Qualitative and quantitative analysis of terahertz gas-phase spectroscopy using independent component analysis

Chemometrics and Intelligent Laboratory Systems, 206.

This study aims at the qualitative and quantitative analysis of the absorption spectra of gas mixtures measured around 245 GHz. Gas-phase spectra of several volatile organic compounds were measured at different pressures. Based on these spectral data, the independent component analysis (ICA) was applied to recover the components spectra and predict their relative concentrations. It is demonstrated that the ICA method is a promising tool to decompose the mixture spectra contributing to high-accuracy qualitative and quantitative analysis of terahertz gas-phase spectroscopy.

Terahertz, Millimeterwellen, Spektroskopie, Gassensor, Quantitative Analyse