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  • Current Optics and Photonics
  • Vol. 7,
  • Issue 6,
  • pp. 761-765
  • (2023)

Analysis of Acetone Absorption Spectra Using Off-axis Integrated Cavity Output Spectroscopy for a Real-time Breath Test

Lim Lee, Yonghee Kim, Byung Jae Chun, Taek-Soo Kim, Seung-Kyu Park, Kwang-Hoon Ko, Ki-Hee Song, and Hyunmin Park

Open Access Open Access

Abstract

We analyzed the absorption spectra of acetone in the 3.37 µm mid-infrared range using the off-axis integrated cavity output spectroscopy technique to develop a real-time, in-line breath analysis device. The linear relationship between acetone concentration and absorption increase was confirmed as 0.32%/ppm, indicating that the developed device allows for a quantitative analysis of acetone concentration in exhaled breath. To further confirm the feasibility of using our device for breath analysis, we measured the acetone concentration of human breath samples at the sub-ppm level.

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