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Online recording of ethane traces in human breath via infrared laser spectroscopy
Journal of applied physiology
A method is described for rapidly measuring the ethane concentration in exhaled human breath. Ethane is considered a volatile marker for lipid peroxidation. The breath samples are analyzed in real time during single exhalations by means of infrared cavity leak-out spectroscopy. This is an ultrasensitive laser-based method for the analysis of trace gases on the sub-parts per billion level. We demonstrate that this technique is capable of online quantifying of ethane traces in exhaled humandoi:10.1152/japplphysiol.00542.2003 pmid:12897034 fatcat:nviv3rdlq5gzjg4xhwbgfryfqy