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SUMMARY:Quantifying Volatile Organic Compound Emissions from Trees
LOCATION:Chemistry A101
TZID:America/Denver
DTSTART:20184201T000000
UID:2026-04-22-19-05-06@natsci.colostate.edu
DTSTAMP:20260422T190506
Description:Accurate predication of both climate and air quality under a ch
 anging earth system requires a full understanding of the sources\, feedbac
 ks\, and ultimate fate of all atmospherically relevant chemical species. V
 olatile organic compounds (VOCs) make up a large portion of the reactive c
 hemical species in the atmosphere and are key components in air quality an
 d climate change1\,2. Biogenic VOCs (BVOC) from plant emissions are the ma
 in source of VOCs to the atmosphere and despite their importance\, the imp
 act of global change on BVOC emissions is poorly understood. For example\,
  while short-term increases in temperature are typically associated with i
 ncreased BVOC emissions\, the impacts of long-term temperature increases a
 re less clear. Thus\, our study aims to investigate the effects of long-te
 rm\, singular and combined environmental perturbations on plant BVOC emiss
 ions through the use of whole plant chambers in order to better understand
  the effects of global change on BVOC-climate-air quality feedbacks.\n\n&n
 bsp\;\n\nTo fill this knowledge gap and provide a fundamental understandin
 g of how BVOC emissions respond to environmental perturbations\, specifica
 lly elevated temperature\, CO2\, and drought\, whole citrus trees were pla
 ced in home-built chambers monitored for monoterpene and other BVOC emissi
 ons utilizing thermal desorption gas chromatography mass spectrometry (TD-
 GC-MS). Designing and building a robust whole plant chamber to study atmos
 pherically relevant chemical species while accommodating the needs of live
  plants over timescales of days to weeks is not a trivial task. The enviro
 nmental conditions within the chamber must be carefully controlled and mon
 itored. The inter-plant and chamber variability must also be characterized
 . Finally\, target BVOCs need to be sampled and detected from the chamber.
  Thus\, the chamber design\, characterization considerations\, and prelimi
 nary BVOC results will be presented along with some ambient BVOC measureme
 nts at the ecosystem level from a field study.\n\n(1)           
 von Scneidemesser\, E.\; Monks\, P.S.\; Allan\, J.D.\; et al. Chem. Rev. 2
 015\, 10\, 3856-3897.\n\n(2)           Peñuelas\, J.\; Staudt\,
  M. Trends Plant Sci. 2010\, 3\, 133-144.\n\n&nbsp\;\n\n&nbsp\;\n\n&nbsp\;
  4:00 pm
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