Detection method measures carbon dioxide in exhaled air, indicating levels important for respiratory health.
A detection method using current technology was applied to a classic experiment in which gaseous carbon dioxide from exhaled air was collected in a flask and ultimately reacted with aqueous sodium hydroxide. A gas pressure sensor interfaced to a calculator-based data collection system was used to determine the percent of carbon dioxide in exhaled air. The average percent of carbon dioxide was found to be approximately 5 %.
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Gordon et al. (2006) studied this question.
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