Authors
Alfons JORDAN, Armin HANSEL, Carsten WARNECKE, Rupert HOLZINGER, Peter PRAZELLER, Wolfgang VOGEL, Werner LINDINGER
Description
A proton transfer reaction mass spectrometer (PTR-MS) system has been developed which allows for on-line measurements of complex mixtures of trace gas components with concentrations as low as 50 ppt.
In vivo observation of the conversion of iso-propanol into acetone, analysis of breath taken from smokers and non-smokers and analysis of garlic breath and similar results are typical examples of medical applications of PTR-MS. The time evolution of several volatile organic compounds during degradation of meat has been investigated and the obtained data allow for a fast check on the degree of freshness of given samples of meat. The emission of aromatic compounds from food is demonstrated by the time evolution of aroma patterns in coffee and data on the diurnial variation of hydrocarbons in air serve as examples for the applicability of PTR-MS for monitoring of air quality.
Scholar articles