Abstract: A method for depleting aromatic hydrocarbon from a crude gas stream, comprising the use of an absorption medium comprising one or more compounds of the general formula (I): wherein R1a and R1b are each independently C7 to C12-alkyl and/or one or more compounds of the general formula (II): wherein R2a and R2b are each independently C7 to C12-alkyl.

Abstract: The present invention relates to an avalanche protection device that includes an avalanche protection backpack with at least one inflatable buoyant airbag and a breathing system with a breathing housing. The breathing housing connects a one-way inhalation valve to an inhalation tube, and at least one intake port, and at least one ambient air suction zone. It also connects a one-way exhalation valve to an exhalation tube and a CO2 exhalation region. A mouthpiece is provided on the breathing housing, which is able to be automatically pulled tightly onto the mouth of an avalanche victim by means of a facial airbag, by actuating a trigger handle. The invention additionally relates to a method for using such an avalanche protection device.