Articles | Volume 17, issue 18
https://doi.org/10.5194/bg-17-4681-2020
https://doi.org/10.5194/bg-17-4681-2020
Research article
 | 
25 Sep 2020
Research article |  | 25 Sep 2020

OH reactivity from the emissions of different tree species: investigating the missing reactivity in a boreal forest

Arnaud P. Praplan, Toni Tykkä, Simon Schallhart, Virpi Tarvainen, Jaana Bäck, and Heidi Hellén

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In this paper, we study emissions of volatile organic compounds (VOCs) from three boreal tree species. Individual compounds are quantified with on-line separation analytical techniques, while the total reactivity of the emissions is measured using a custom-built instrument. On some occasions, in particular when the trees suffer from stress, the total reactivity measured is higher than the sum of the reactivity of individual compounds. This indicates that the threes emit VOCs that remain unknown.
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