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Methoxyphenols from burning of Scandinavian forest plant materials

Metoxifenoler från eldning av växtmateral från skandinaviska skogar

Jennica Kjällstrand (Institutionen för kemisk miljövetenskap) ; Olle Ramnäs (Institutionen för kemisk miljövetenskap) ; Göran Petersson (Institutionen för kemisk miljövetenskap)
Chemosphere Vol. 41 (2000), p. 735-741.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: phenols, wood, lignin, combustion, fire, smoke



Denna post skapades 2008-07-25. Senast ändrad 2010-09-30.
CPL Pubid: 72542

 

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Institutioner (Chalmers)

Institutionen för kemisk miljövetenskap (1900-2003)

Ämnesområden

Analytisk kemi
Miljökemi

Chalmers infrastruktur