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Conifer monoterpenes emitted to air by logging operations

Monoterpener i luft från avverkning av barrträd

Ann-Margret Strömvall (Institutionen för kemisk miljövetenskap) ; Göran Petersson (Institutionen för kemisk miljövetenskap)
Scandinavian journal of forest research Vol. 6 (1991), p. 253-258.
[Artikel, refereegranskad vetenskaplig]

Concentration levels in air were determined for monoterpenes emitted from forestry operations in south-west Sweden. Field samples were collected on Tenax cartridges and analyzed in the laboratory by techniques based on gas chromatography. Processing of Scots pine as well as Norway spruce with a harvestor gave rise to about 1000 microgram/m3 of total monoterpenes near the machine. The corresponding levels above fresh branch wood were 100-500 microgram/m3. The background level was around 1 microgram/m3. The major monoterpenes were alpha-pinene and 3-carene from Pinus sylvestris and alpha-pinene and beta-pinene from Picea abies. Compounds constituting 1-10 % each of the total monoterpenes were camphene, 3-carene, limonene, beta-phellandrene and myrcene for spruce and camphene, beta-pinene, limonene, beta-phellandrene, myrcene and terpinolene for pine. Representative percent compositions for the two species are given for 13 monoterpenes. Photo-oxidant formation from the monoterpenes is discussed with respect to potential local contributions to strain and damage of the forests. Possible preventive measures are suggested.

Nyckelord: terpener, gaskromatografi, luftförorening, barrskog, avverkning, tall, gran

Denna post skapades 2008-08-02. Senast ändrad 2015-06-12.
CPL Pubid: 72629


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