Chemical analysis of exhaled human breath using a terahertz spectroscopic approach
Authors:
- 23 September 2013
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 103 (13) , 133703
Abstract
As many as 3500 chemicals are reported in exhaled human breath. Many of these chemicals are linked to certain health conditions and environmental exposures. This experiment demonstrated a method of breath analysis utilizing a high resolution spectroscopic technique for the detection of ethanol, methanol, and acetone in the exhaled breath of a person who consumed alcohol. This technique is applicable to a wide range of polar molecules. For select species, unambiguous detection in a part per trillion dilution range with a total sample size in a femtomol range is feasible. It compares favorably with other methods of breath analysis.Keywords
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