Acetone measurements in the exhaled air by the cavity ring-down spectrometry

G. Revalde; K. Grundsteins; A. Abola

doi:10.1117/12.2581987

28 October 2020 Acetone measurements in the exhaled air by the cavity ring-down spectrometry

G. Revalde, K. Grundsteins, A. Abola

Proceedings Volume 11585, Biophotonics—Riga 2020; 115850G (2020) https://doi.org/10.1117/12.2581987
Event: Third International Conference Biophotonics Riga 2020, 2020, Riga, Latvia

Abstract

Our work is focused to develop sensitive optical diagnostic methods for the detection of Volatile Organic Compounds in the breath. For the breath measurements, we have built a cavity ring-down spectrometer, operated in the UV region. The system was tested and calibrated using a KinTek automated permeation tube system with nitrogen as a carrier gas, as well as self- prepared acetone mixtures in air with known concentrations. In this paper, we present results of the measurements of acetone concentration in the breath for the test group of randomly selected 40 people in the age group over 50. We observed the values of acetone concentration in the breath in the range from 0,1 – 80 ppm, with a median 7,1 ppm. The experiments showed that the limits of detection for acetone with the cavity ring-down system are several tens of ppb.

Citation Download Citation

G. Revalde, K. Grundsteins, and A. Abola "Acetone measurements in the exhaled air by the cavity ring-down spectrometry", Proc. SPIE 11585, Biophotonics—Riga 2020, 115850G (28 October 2020); https://doi.org/10.1117/12.2581987

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