Componental structure:

1. O2 - N2, CO2 - N2 , Ar - N2 , CH4 - N2 , C3H8 - N2 , H2 - N2 , CO2 - N2

2. H2 - air, CO2 - air, CH4 - air, CO - air, C4H10 - air, O2 - H2, C3H8 - He

3. O2 - Ar, H2 - Ar, CH4 - Ar, H2 - O2