Acetone Measurements in the Exhaled Air by the Cavity Ring-Down Spectrometry

被引：0
|
作者：
Revalde, G. [1 ,2 ]
Grundsteins, K. [2 ]
Abola, A. [2 ]
机构：
[1] Riga Tech Univ, Inst Tech Phys, Dept Mat Sci & Appl Chem, P Valdena Str 3-7, Riga, Latvia
[2] Univ Latvia, Insitute Atom Phys & Spect, Jelgavas Str 3, Riga, Latvia
来源：
BIOPHOTONICS-RIGA 2020 | 2020年 / 11585卷
关键词：
Acetone; breath analysis; cavity ring-down spectroscopy; VOCs; BrAce; BREATH;
D O I：
10.1117/12.2581987
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
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.
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页数：6
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