Isotope-Selective Gas Sensing Using Photoacoustic Non-Dispersive Spectroscopy
Gabriel Rodriguez Gutierrez,
Loay Marouani,
Alvaro Ortiz Perez,
Peter Kreuzaler,
Stefan Palzer
Affiliations
Gabriel Rodriguez Gutierrez
Department of Electrical Engineering and Information Technology, TU Dortmund, 44227 Dortmund, Germany
Loay Marouani
Department of Electrical Engineering and Information Technology, TU Dortmund, 44227 Dortmund, Germany
Alvaro Ortiz Perez
Department of Electrical Engineering and Information Technology, TU Dortmund, 44227 Dortmund, Germany
Peter Kreuzaler
University of Cologne, Faculty of Medicine and University Hospital Cologne, Institute for Metabolomics in Ageing, Cluster of Excellence Cellular Stress Responses in Aging-Associated Diseases (CECAD), 50931 Cologne, Germany
Stefan Palzer
Department of Electrical Engineering and Information Technology, TU Dortmund, 44227 Dortmund, Germany
The flow of carbons into the citric acid cycle can be readily traced by supplementation with 13C stable isotope labelled nutrients. However, the quantification of the amount of fully oxidised nutrients to carbon dioxide is a challenging task. This contribution presents an isotope-selective, miniaturized gas detection scheme based on indirect photoacoustic spectroscopy. The results show that low-cost, continuous, in situ monitoring of the isotope ratio in gaseous samples is feasible.
