The column packing materials and the optimum conditions for Gas Chromatographic Analysis of the N₂O-CO₂-Air system were investigated.
Among the column materials tested, effort was concentrated on the packing materials, i.e. silica gel and activated carbon. This study has revealed that silica gel was unable to separate N₂O and CO₂ at room temperature while activated carbon was found to be suitable for this separation.
As the result of analysis conducted at various temperatures from 20 ° to 100 ℃ on an 1 m activated carbon column, and at a carrier gas(Helium) flow rate of 45 ml/min, the optimum temperature for the separation of the mixture was found to range from 40 ° to 60 ℃.