Atmospheric mixing ratios of chlorinated C1 and C2 hydrocarbons (CHCs) were measured at the mountain Wank (GarmischPartenkirchen, Bavarian Alps) in autumn 1992. The data lead to the assumption that at least part of the observed CCl4 originates from a source different to the other CHCs measured (C2HCL3, C2Cl4, CHCl3 and CH3CCl3) . The nature of this source is discussed.
