Full TGIF Record # 275456
Item 1 of 1
DOI:10.5194/acp-14-797-2014
Web URL(s):http://www.atmos-chem-phys.net/14/797/2014/acp-14-797-2014.pdf
    Requires: PDF Reader
    Notes: 09/19/2016
Publication Type:
i
Refereed
Author(s):Harvey, R. M.; Zahardis, J.; Petrucci, G. A.
Author Affiliation:Department of Chemistry, University of Vermont, Burlington, VT
Title:Establishing the contribution of lawn mowing to atmospheric aerosol levels in American suburbs
Source:Atmospheric Chemistry and Physics Discussions. Vol. 14, No. 2, 2014, p. 797-812.
Publishing Information:[Katlenburg-Lindau, Germany]: European Geophysical Society
# of Pages:16
Keywords:TIC Keywords: Emissions; Environmental impact; Evaluations; Mowing; Urban habitat; Volatile organic compounds
Abstract/Contents:"Green leaf volatiles (GLVs) are a class of wound-induced volatile organic compounds emitted by several plant species. Turf grasses emit a complex profile of GLVs upon mowing, as evidenced by the 'freshly cut grass' smell, some of which are readily oxidized in the atmosphere to contribute to secondary organic aerosol (SOA). The contribution of lawn-mowing-induced SOA production may be especially impactful at the urban-suburban interface, where urban hubs provide a source of anthropogenic oxidants and SOA while suburban neighborhoods have the potential to emit large quantities of reactive, mow-induced GLVs. This interface provides a unique opportunity to study aerosol formation in a multicomponent system and at a regionally relevant scale. Freshly cut grass was collected from a study site in Essex Junction, Vermont, and was placed inside a 775 L Teflon experimental chamber. Thermal desorption gas chromatography-mass spectrometry (TD-GC/MS) was used to characterize the emitted GLV profile. Ozone was introduced to the experimental chamber and TD-GC/MS was used to monitor the consumption of these GLVs and the subsequent evolution of gas-phase products, while a scanning mobility particle sizer was used to continuously measure aerosol size distributions and mass loadings as a result of grass clipping ozonolysis. Freshly cut grass was found to emit a complex mixture of GLVs, dominated cis-3-hexenyl acetate (CHA) and cis-3-hexenol (HXL), which were released at an initial rate of 1.8 (±0.5) μg and 0.07 (±0.03) μg per square meter of lawn mowed with each mowing. Chamber studies using pure standards of CHA and HXL were found to have aerosol yields of 1.2 (±1.1)% and 3.3 (±3.1)%, respectively. Using these aerosol yields and the emission rate of CHA and HXL by grass, SOA evolution by ozonolysis of grass clippings was predicted. However, the measured SOA mass produced from the ozonolysis of grass clippings exceeded the predicted amount, by upwards of ~150%. The ozonolysis of a mixture of CHA and HXL representative of environmental mixing ratios also failed to accurately model the SOA mass produced by grass clippings. The disparity between measured SOA mass and the predicted SOA mass suggests that grass clippings contain other SOA precursors in addition to CHA and HXL. Aerial photographs and geospatial analysis were used to determine the area of turfgrass coverage in a suburban neighborhood, which was then used along with measured SOA production as a function of grass mowed to determine that lawn mowing has the potential to contribute 47 μg SOA per m-2 of lawn to the atmosphere per mowing event by ozonolysis, which cannot be modeled solely by the ozonolysis of CHA, HXL or a representative mixture of the two."
Language:English
References:87
Note:Map
Figures
Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Harvey, R. M., J. Zahardis, and G. A. Petrucci. 2014. Establishing the contribution of lawn mowing to atmospheric aerosol levels in American suburbs. Atmos. chem. phys. discuss. 14(2):p. 797-812.
Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=275456
If there are problems with this record, send us feedback about record 275456.
Choices for finding the above item:
DOI: 10.5194/acp-14-797-2014
Web URL(s):
http://www.atmos-chem-phys.net/14/797/2014/acp-14-797-2014.pdf
    Requires: PDF Reader
    Notes: 09/19/2016
Find Item @ MSU
MSU catalog number: b4899052
Find from within TIC:
   Digitally in TIC by record number.
Request through your local library's inter-library loan service (bring or send a copy of this TGIF record)