Journal
ANALYTICAL CHEMISTRY
Volume 85, Issue 2, Pages 846-850Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac3031465
Keywords
-
Categories
Funding
- SEEDA
- Oxford Medical Diagnostics (OMD)
Ask authors/readers for more resources
A high-resolution absorption spectrum of gaseous acetone near 8.2 mu m has been taken using both Fourier transform and quantum cascade laser (QCL)-based infrared spectrometers. Absolute absorption cross sections within the 1215-1222 cm(-1) range have been determined, and the spectral window around 1216.5 cm(-1) (sigma = 3.4 X 10(-19) cm(2) molecule(-1)) has been chosen for monitoring trace acetone in exhaled breath. Acetone at sub parts-per-million (ppm) levels has been measured in a breath sample with a precision of 0.17 ppm (1 sigma) by utilizing a cavity enhanced absorption spectrometer constructed from the QCL source and a linear, low-volume, optical cavity. The use of a water vapor trap ensured the accuracy of the results, which have been corroborated by mass spectrometric measurements.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available