Scheduled System Maintenance:
On Monday, April 27th, IEEE Xplore will undergo scheduled maintenance from 1:00 PM - 3:00 PM ET (17:00 - 19:00 UTC). No interruption in service is anticipated.
By Topic

Effect of Exhalation Variables on the Current Response of an Enzymatic Breath Acetone Sensing Device

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Landini, B.E. ; Kemeta, LLC, Mesa, AZ, USA ; Bravard, S.T.

The effect of simulated breath flow rate, vapor temperature, and flow duration on the linearity and variation in the current response of an enzymatic electrochemical breath acetone sensor was examined. Variable simulated flow rate and vapor temperature only slightly increased the variation in the overall sensor current response to vapor acetone, while the response remained linear with acetone concentration. This increased variation was measured by a slightly decreased linear R 2 compared to simulated breath under constant control conditions. Simulated variable flow duration increased the variation in sensor response, especially for blow times less than 5 s at vapor acetone concentrations less than 1 ppm (v/v). This trend with flow duration was reflected in data produced during human breath testing. In all cases, the sensor current response remained linear with vapor acetone concentration. In a clinical test, the sensor current displayed a linear dependence on human breath acetone concentrations ranging from 0.2 to 17 ppm (v/v), as measured by gas chromatography. The linear R 2 across 201 direct human breath measurements was 0.949.

Published in:

Sensors Journal, IEEE  (Volume:10 ,  Issue: 1 )