“…Furthermore, a recent corrosion study using irradiated steel identified dissolved and gaseous 14 C-bearing small carbon compounds (de Visser-Týnová et al, 2018). In the present study on the corrosion of irradiated steel, we developed analytical methods that allow both oxidized and reduced 14 C-bearing carbon compounds to be identified and quantified at ultra-low concentrations in both the liquid and gas phases by accelerator mass spectrometry (AMS) (Cvetković et al, 2018b;Cvetković et al, 2018c;Guillemot et al, 2020b). The extremely low 14 C concentrations expected in this corrosion experiment are a consequence of the small size and low 14 C content of the irradiated steel samples, the extremely slow corrosion of stainless steel under alkaline anoxic conditions, and finally the small sample quantities available for analysis with the given experimental set-up.…”