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Environ Sci Technol

Title:		Effect of bark beetle infestation on secondary organic aerosol precursor emissions
Author(s):		Amin H; Atkins PT; Russo RS; Brown AW; Sive B; Hallar AG; Huff Hartz KE;
Address:		"Southern Illinois University Carbondale, Carbondale, Illinois, USA"
Journal Title:		Environ Sci Technol
Year:		2012
Volume:		20120511
Issue:		11
Page Number:		5696 - 5703
DOI:		10.1021/es204205m
ISSN/ISBN:		1520-5851 (Electronic) 0013-936X (Linking)
Abstract:		"Bark beetles are a potentially destructive force in forest ecosystems; however, it is not known how insect attacks affect the atmosphere. The emissions of volatile organic compounds (VOCs) were sampled i.) from bark beetle infested and healthy lodgepole pine (Pinus contorta var. latifolia) trees and ii.) from sites with and without active mountain pine beetle infestation. The emissions from the trunk and the canopy were collected via sorbent traps. After collection, the sorbent traps were extracted with hexane, and the extracts were separated and detected using gas chromatography/mass spectroscopy. Canister samples were also collected and analyzed by a multicolumn gas chromatographic system. The samples from bark beetle infested lodgepole pine trees suggest a 5- to 20-fold enhancement in total VOCs emissions. Furthermore, increases in the beta-phellandrene emissions correlated with bark beetle infestation. A shift in the type and the quantity of VOC emissions can be used to identify bark beetle infestation but, more importantly, can lead to increases in secondary organic aerosol from these forests as potent SOA precursors are produced"
Keywords:		Adsorption Aerosols/*analysis Air Pollutants/*analysis Animals Coleoptera/*physiology Colorado Gas Chromatography-Mass Spectrometry Monoterpenes/analysis Pinus/*parasitology Plant Bark/*parasitology Plant Diseases/*parasitology Volatile Organic Compounds/;
Notes:		"MedlineAmin, Hardik Atkins, P Tyson Russo, Rachel S Brown, Aaron W Sive, Barkley Hallar, A Gannet Huff Hartz, Kara E eng Research Support, U.S. Gov't, Non-P.H.S. 2012/05/02 Environ Sci Technol. 2012 Jun 5; 46(11):5696-703. doi: 10.1021/es204205m. Epub 2012 May 11"