Gas Chromatography Mass Spectrometry
The expired air of the ABC infants is emptied from the sample bags into a stainless-steel two-bed sorption tube, filled with carbograph and stored at room temperature (See Figure 1).
The tubes are subsequently shipped to The Netherlands where our collaborator Proff. F.J.van Schooten, Department of Health Risk Analysis and Toxicology, Nutrition and Toxicology Research Institute Maastricht, Maastricht University, analyze and quantify the VOC's by thermal desorption-gas chromatography time-of-flight mass spectrometry (GC-MS) [1].
Figure 1. Sampling expired air into a tube for GC-MS analysis.
