Analysis of volatile organic compounds (vocs) in the atmosphere of a forest area in Achenkirch/Tyrol by Thermodesorption-GC-MS/FID : Organic xenobiotics and plants: impact, metbaolism and toxicology. Proceedings of the 4th IMTOX-Workshop

1998

S. 5-18

6 Abb., 2 Tab., 29 Lit. Ang.

Unselbständiges Werk

200065869

Organic xenobiotics and plants: impact, metbaolism and toxicology : Proceedings of the 4th IMTOX-Workshop held in Vienna, September 25-26, 1997 : IMTOX-Workshop: Organic xenobiotics and plants: impact, metbaolism and toxicology ; Bd. 24, S. 5-18
; Bd. 24

Measurements of volatile organic compounds (VOCs) in an alpine forest area at Achenkirch, Tyrol, were carried out using parallel sampling at three sampling sites at 1030, 1220 and 1686 m above sea level. This allows the recording of temporal and altitude profiles for more than 80 individual compounds for the assessment of the role of anthropogenic and biogenic compounds as precursors for the photochemical ozone formation. Data are presented for the sampling campaign on June 14th, 1996, a day which is characterized by generally low VOC mixing ratios (c. 25 ppbC) at the middle station and the peak. The sampling station in the valley, however, recorded up to c. 71 ppbC total VOCs of which the most abundant single substance was ethene with c. 50 ppbC peak concentration. Although no emission source could be identified explicitly, it is very probable that these high peak concentrations are due to long range transport from stronger polluted areas in South Germany as can be deduced from the specific VOC composition.