From: On-line Monitoring of End-tidal Propofol Concentration in Anesthetized Patients
Anesthes. 2007;106(4):659-664. doi:10.1097/01.anes.0000264745.63275.59
Figure Legend:
Fig. 6. Schematic representation of the principle of the proton transfer reaction mass spectrometry system. The H 3O+ions generated
in the ion source portion react with the target substance (propofol) in the drift tube (proton transfer reaction). Protonated propofol is
then detected with a quadrupole mass spectrometer (QMS) and scanning electron microscope (SEM).
Date of download: 7/31/2017
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