The reactivity of non-oriented polycrystalline graphite, highly oriented pyrolitic graphite, glassy carbon, diamond and fullerene C-60 has been studied at the oxygen partial pressure < 2 Pa and in the temperature range from room temperature to 1223 K. The common characteristic in their reactivity behaviour was essentially found in the low temperature region (approximate to 550 K) where a consumption of oxygen is observed which cannot be fully associated to chemisorption but to surface CO intermediates.