Compound Sourcea Formula MWb RT Ions used for integration Control B207 L201
(min) Area (%) Area (%) Area (%)
Carbon dioxide   CO2 44 1.619 44,34,32 100 100 100
Toluene L C7H8 92 4.096 91,92,57 14.05 13.61 12.69
Benzyl methyl ketone L C9H10O 134 4.121 43,91,92 8.48 6.58 4.73
Ethylbenzene L C8H10 106 5.899 106,91,43   1.05 1.23
Styrene L C8H8 104 6.576 104,103,78 4.1 3.95 2.88
Phenol L,H C6H6O 94 8.924 94,66,65 7.78 7.49 6.13
1,2-Cyclopentanedione, 3-methyl-   C6H8O2 112 9.986 112,69,55   3.27 1.65
Benzene, 1-ethynyl-4-methyl- L C9H8 116 10.353 115,116,89 4.93 4.65 4.45
Phenol, 2-methyl- L,H C7H8O 108 10.718 108,107,79 2.58 2.73 2.49
Phenol, 3-methyl- L,H C7H8O 108 11.273 107,108,77 5.08 6.17 4.8
Phenol, 2-methoxy- L,G C7H8O2 124 11.514 109,124,81 16.24 12.38 11.6
Phenol, 3,4-dimethyl- L,H C8H10O 122 13.017 122,107,121   3.04 1.87
Naphthalene L C10H8 128 13.818 128,127 10.89 9.64 7.91
Phenol, 2-methoxy-4-methyl- L,G C8H10O2 138 14.047 138,123,95 9.59 8.84 6.84
1,2-Benzenediol L,H C6H6O2 110 14.477 110,64,63   6.94  
Phenol, 4-ethyl-2-methoxy- L,G C9H12O2 152 16.074 137,152,122 3.24 3.1 2.53
2-Methoxy-4-vinylphenol L,G C9H10O2 150 16.877 150,135,107 22.19 19.3 15.96
Eugenol L,G C10H12O2 164 17.83 164,149,131 3.32 3.44 1.46
Vanillin L,G C8H8O3 152 18.828 151,152,81 6.93 7.42 4.98
Phenol, 2-methoxy-4-(1-propenyl)- L,G C10H12O2 164 18.93 164,149,77 1.68 1.72 1.03
Phenol, 2-methoxy-4-(1-propenyl)-, (E)- L,G C10H12O2 164 19.81 164,149,152 13.65 13.48 12.4
Phenol, 2-methoxy-4-propyl- L,G C10H14O2 166 20.013 137,166,60 1.21 1.63 1.14
Ethanone, 1-(4-hydroxy-3-methoxyphenyl)- L,G C9H10O3 166 20.651 151,166,123 3.82 4.87 3.05
2-Propanone, 1-(4-hydroxy-3- L,G C10H12O3 180 21.537 137,180,122 3.44 2.59 2.22
methoxyphenyl)-
Vanilacetic acid L,G C9H10O4 182 23.805 137,182,138 5.43 4.75 2.11
(E)-Conipheryl alcohol L,G C10H12O3 180 24.265 137,180,124 0.78 1.19 1.57
4-Hydroxy-2-methoxycinnamaldehyde L,G C10H10O3 178 25.416 178,135,147 3.08 3.54 1.63
Phenanthrene L C14H10 178 26.146 178,176,179 2 1.78 1.32
  H/L (%)   10.27 17.96 13.16
  G/L (%)   62.9 59.78 58.99
  G/H ratio   6.12 3.33 4.48
a L, Lignin; G, guaiacyl type; H, hydroxyphenyl type b Molecular weight
Table-3: Principal pyrolysis products of untreated softwood control and softwood samples treated by B207 and L201, respectively.