Evaluation of Pyrograms and Spectra

The pyrograms of plants or lignins can be evaluated through use of the similarity index (Salo et al, 1989), as defined by the following equation  

134 Allyl- + propenyl- 164 Allyl- + propenyl 194 Allyl- + propenyl 

Additional fragmentation patterns of lignin model compounds have been reported by Kovacik et al 1969, 1980, Kovacik and Skamla 1969, and Faix et al 

The mass spectra of 51 important phenolic lignin pyrolysis products are presented in Fig. 4.7.10. 

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