spectra of the excited species generated from the DBD device. Each spectral line obtained by OES corresponded to a molecular electronic transition coupled with a change in state (or energy) or the vibrations and rotations of the molecule (Staack et al., 2006). Emission spectra were measured using a spectrometer (HORIBA Jobin Yvon Spex 1000M; 200 to 450 nm; 2400 grooves/mm).