… sedimentation (in the case of heavy dusts) and chemical conversions (in the case of gases). In addition, the concentration depends on the distance from the source and … How to classify the critics by R. Schenk in journal "Immissionsschutz" 01/2015? The regulation TA Luft states how the public is to be protected from hazardous air … sedimentation (in the case of heavy dusts) and chemical conversions (in the case of gases). In addition, the concentration depends on the distance from the source and …