Isoprene and terpenoid emissions from Abies alba: Identification and emission rates under ambient conditions
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Authors
Pokorska, O.
Dewulf, J.
Amelynck, C.
Schoon, N.
Simpraga, M.
Steppe, K.
Van Langenhove, H.
Discipline
Earth and related Environmental sciences
Subject
Abies alba
Belgium
Biogenic volatile organic compounds
Emission rates
Isoprene
Seasonal variation
Air quality
Atmospheric composition
Emission spectroscopy
Olefins
Volatile organic compounds
Lipids
beta pinene
camphene
isoprene
limonene
pinene
sesquiterpene
terpenoid
volatile organic compound
air quality
atmospheric pollution
biogenic emission
emission inventory
enclosure experiment
evergreen tree
identification method
isoprene
seasonal variation
spatiotemporal analysis
terpene
volatile organic compound
Abies
air quality
algorithm
ambient air
article
atmospheric dispersion
Belgium
nonhuman
priority journal
quantitative analysis
summer
temperature dependence
Belgium
Flanders
Abies alba
Audience
Scientific
Date
2012Metadata
Show full item recordDescription
In this study, biogenic volatile organic compound (BVOC) emissions from Abies alba were studied under ambient conditions in Flanders (Belgium). Emission patterns and rates were investigated from April till November 2010 by using the dynamic branch enclosure technique. The present work revealed that A. alba is an isoprene emitter, with isoprene accounting for 86–93% of total BVOC emissions, except during budburst (67%) in May. The emission spectrum of A. alba consisted of 27 compounds. Next to isoprene, the main emitted compounds were α-pinene, β-pinene, camphene and limonene. BVOC emissions showed a peak in June after development of the young needles, followed by a constant emission during summer months and September and a decrease in October. In all the samples isoprene was the most abundant compound with standardized emission rates between 27 μg g(dw)−1 h−1 in June and 4.6 μg g(dw)−1 h−1 in October, while the total standardized terpenoid emission rates ranged from 2.85 μg g(dw)−1 h−1 in June to 0.26 μg g(dw)−1 h−1 in October. The obtained average β coefficients according to the temperature dependent algorithm of Guenther et al. (1993) during April–June, July, August and September–October were as follows: for terpenoids 0.12 ± 0.03, 0.11 ± 0.05, 0.12 ± 0.04, 0.24 ± 0.01 K−1 and sesquiterpenes (SQTs) 0.09 ± 0.02, 0.11 ± 0.01, 0.10 ± 0.05, 0 K−1, respectively. Overall, isoprene detected in this study was never quantified in previous studies on A. alba and this finding could have a significant impact on the regional BVOCs budget. Therefore, the result of this study is very important for modeling and local air quality.
Citation
Pokorska, O.; Dewulf, J.; Amelynck, C.; Schoon, N.; Simpraga, M.; Steppe, K.; Van Langenhove, H. (2012). Isoprene and terpenoid emissions from Abies alba: Identification and emission rates under ambient conditions. , Atmospheric Environment, Vol. 59, 501-508, DOI: 10.1016/j.atmosenv.2012.04.061.Identifiers
scopus: 2-s2.0-84863482533
Type
Article
Peer-Review
Yes
Language
eng