Conifer monoterpenes emitted to air by logging operations
Artikel i vetenskaplig tidskrift, 1991

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.

avverkning

gran

tall

barrskog

gaskromatografi

luftförorening

terpener

Författare

Ann-Margret Hvitt Strömvall

Institutionen för kemisk miljövetenskap

Göran Petersson

Institutionen för kemisk miljövetenskap

Scandinavian journal of forest research

Vol. 6 253-258

Ämneskategorier

Analytisk kemi

Jordbruksvetenskap

Skogsvetenskap

Miljövetenskap