Experimental research on volatile organic compounds (VOC) in normal human exhaled breath

Volatile organic compounds (VOC) in human exhaled breath in crowded environment, such as meeting rooms, auditoriums, gymnasiums, airplanes and trains, are important pollutant source. Current research mainly aims at medical and environmental exposure fields where there is the limitation in the application fields and database. In order to study the emission rule of the VOC, develops and optimizes a breath sampling device. By means of gas chromatography-mass spectrometry (GC/MS), makes a qualitative and quantitative analysis. Collects the exhaled breath samples of 111 subjects. The result shows that there is large differences of VOC among different individuals and there is also something in common. It proves that VOC in human exhaled breath are the pollutant sources which can not be neglected. This work can be used as a reference for the reasonable design of ventilation system of artificial environment.