Kontinuierliche Bestimmung flüchtiger organischer Abbauprodukte von Treibstoffen in Wasser

Volatile products like Aniline, Toluene, Alkylamines, are often formed by the decomposition of propellants. These substances can be detected continuously in aqueous solutions by a new mass spec-trometric setup. The essential part of these setup is a flow cell coupled to a mass spectrometric unit. A porous, hydrophobic membrane fixes the phase boundary liquid/gaseous and serves as gas inlet for the vacuum. A model explains the carriage of in water dissolved, volatile substances. It describes the diffusion in the flow cell, the passage through the phase boundary and the particle current through the membrane into the vacuum system. The sensitivity of volatile, organic compounds are generally in the range of 1 mym/1 to 1 mg/l. Due to short reaction times this method enables continuous controlling of process- and waste water.