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- W3004172132 abstract "Levoglucosan, a product from thermal decomposition of cellulose, is widely known as an organic tracer of biomass burning, but has also been reported from coal smoke particulate matter (PM) including lignites. This study provides direct evidence that levoglucosan is generated not only during low-temperature burning/smoldering of xylite, but also from other lignite types including detritic and detroxylitic brown coals from Poland. Moreover, only trace amounts of mannosan and galactosan have been detected in PM of lignite smoke. The hopanes in lignite smoke PM comprise the thermodynamically unstable ββ-hopanes and hopenes, with values of the homohopane index 22S/(22S + 22R) ranging from 0.02 to 0.12. This is characteristic for immature organic matter, and combined with the presence of anhydrosaccharides can be used as tracers for lignite combustion in ambient air. Furthermore, almost all Miocene lignite smoke PM samples contain α-, β-, γ-, and δ-tocopherols, and prist-1-ene. This is the first report of the occurrence of all four tocopherol isomers in the geological record (in lignite extracts) and in lignite smoke PM samples. Lower α-tocopherol is observed for the lignite burn-test samples than in the corresponding lignite extracts, probably due to partial chain degradation to prist-1-ene during combustion." @default.
- W3004172132 created "2020-02-07" @default.
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- W3004172132 creator A5078787007 @default.
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- W3004172132 date "2020-06-01" @default.
- W3004172132 modified "2023-09-25" @default.
- W3004172132 title "Composition of organic compounds from low-temperature burning of lignite and their application as tracers in ambient air" @default.
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- W3004172132 doi "https://doi.org/10.1016/j.chemosphere.2020.126087" @default.
- W3004172132 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32062555" @default.
- W3004172132 hasPublicationYear "2020" @default.
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