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Table 1 Performance tests of the Tree DEMON for BVOC emission studies

From: The Tree Drought Emission MONitor (Tree DEMON), an innovative system for assessing biogenic volatile organic compounds emission from plants

Test Method N Settings
BVOC sampler unit repeatability and reproducibility Sampling of Δ2-carene enriched air direct at chamber inlet 48 (4 sampler strings, 4 ports, three repetitions) Sample rate 150 mln min−1, Sample duration: 10 min, Standard gas addition: 50 mln min−1 of Δ2-carene Chamber flow rate: 5 ln min−1 (~0.22 nmol mol−1 Δ2-carene mixing ratio in the inlet air)
Chamber wall effects Sampling Δ2-carene enriched air direct at chamber inlet and outlet simultaneously at 2 chambers 20 (2 chambers with each 2 sampler strings at inlet and outlet, 5 measurements) See above
Residence time of compounds Sampling system air after 1 h stop of Δ2-carene enrichment 12 (2 chambers with each 2 sampler strings at inlet and outlet, 3 measurements) See above
  1. N number of measurements