Journal
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
Volume 408, Issue 18, Pages 4835-4843Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s00216-016-9598-5
Keywords
Lignin; High resolution mass spectrometry; Kendrick mass; Mass defect; 2D matrix plot; FTICR-MS
Funding
- German Research Foundation [DFG VO 1355/4-1, INST 256/356-1]
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Lignin is the second most abundant natural biopolymer, and lignin wastes are therefore potentially significant sources for renewable chemicals such as fuel compounds, as alternatives to fossil fuels. Waste valorisation of lignin is currently limited to a few applications such as in the pulp industry, however, because of the lack of effective extraction and characterisation methods for the chemically highly complex mixtures after decomposition. Here, we have implemented high resolution mass spectrometry and developed two-dimensional mass defect matrix plots as a data visualisation tool, similar to the Kendrick mass defect plots implemented in fields such as petroleomics. These 2D matrix plots greatly simplified the highly convoluted lignin mass spectral data acquired from Fourier transform ion cyclotron resonance (FTICR)-mass spectrometry, and the derived metrics provided confident peak assignments and strongly improved structural mapping of lignin decomposition product series from the various linkages within the lignin polymer after electrochemical decomposition.
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