A large number of peaks appear in initial dye solution and in the plasma-treated samples spectra, indicating different chemical bonds and the presence of various organic matter. The peaks smooth out over time of treatment, showing the degradation of dye molecules into smaller ones and an overall decrease of organics. Similar patterns were noted by other researchers.For example, reported rapid decomposition of the initial compound, reaching 100% efficiency in 3 mins, but amount of total organic carbon decreased slowly , taking time about 1 hour to reach removal efficiency to 50%