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Methoxyphenols from...
Methoxyphenols from burning of Scandinavian forest plant materials
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- Kjällstrand, Jennica, 1974 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Ramnäs, Olle Jerker, 1941 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Petersson, Göran, 1941 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2000
- 2000
- Engelska.
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Ingår i: Chemosphere. ; 41, s. 735-741
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Abstract
Ämnesord
Stäng
- Semivolatile compounds in smoke from gram-scale incomplete burning of plant materials were assessed by gas chromatography and mass spectrometry. Gas syringe sampling was shown to be adequate by comparison with adsorbent sampling. Methoxyphenols as well as 1,6-anhydroglucose were released in amounts as large as 10 mg kg(-1) of dry biomass at 90% combustion efficiency. Wood, twigs, bark and needles from the conifers Norway spruce and Scots pine emitted 12 reported 2-methoxyphenols in similar proportions. Grass, heather and birchwood released the same 2-methoxyphenols but also the corresponding 2,6-dimethoxyphenols which are characteristic of angiosperms. The methoxyphenols are formed from lignin and differ in structure by the group in para position relative to the phenolic OH group. Prominent phenols were those with trans-1-propenyl and ethenyl groups in that position. Vanillin, 4-hydroxy-3-methoxybenzaldehyde, was a prominent carbonyl compound from the conifer materials.
Ämnesord
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- wood
- smoke
- combustion
- phenols
- lignin
- fire
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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