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Continuous Determination of Volatile Organic Breakdown Products of Propellants in Water

Kontinuierliche Bestimmung von flüchtigen organischen Abbauprodukten von Treibstoffen in Wasser
: Hambitzer, G.; Joos, M.

Krause, H.H.; Penninger, J.M.L.:
Conversion of Polymer Wastes and Energetics
Toronto-Scarborough: ChemTec Publishing, 1994
ISBN: 1-895198-06-2
Aufsatz in Buch
Fraunhofer ICT ()
decomposition; mass spectrometry; Propellants; volatile products; waste water

Volatile products such as aniline, toluene, and alkylamines are often formed by the decomposition of propellants. These substances can be continuously detected in aqueous solutions by a new mass spectrometric setup. The essential part of this setup is a flow cell coupled with a mass spectrometric unit. A porous, hydrophobic membrane fixes the phase boundary of liquid/gas and serves as a gas inlet for the vacuum. A model explains the pathway of volatile substances dissolved in water. It describes the diffusion in the flow cell, the transfer of volatiles through the phase boundary, and the membrane into the vacuum system. The sensitivity determination of volatile, organic compounds is generally within the range of 1 myg/L to 1 mg/L. Due to the short reaction times, this method enables continuous control of the process and waste water.