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Environ Pollut

Title:		"Biogenic volatile organic compounds from the urban forest of the Metropolitan Region, Chile"
Author(s):		Prendez M; Carvajal V; Corada K; Morales J; Alarcon F; Peralta H;
Address:		"Universidad de Chile, Facultad de Ciencias Quimicas y Farmaceuticas, Laboratorio de Quimica de la Atmosfera, Sergio Livingston 1007, Santiago, Chile. Electronic address: mprendez@ciq.uchile.cl"
Journal Title:		Environ Pollut
Year:		2013
Volume:		20130430
Issue:
Page Number:		143 - 150
DOI:		10.1016/j.envpol.2013.04.003
ISSN/ISBN:		1873-6424 (Electronic) 0269-7491 (Linking)
Abstract:		"Tropospheric ozone is a secondary pollutant whose primary sources are volatile organic compounds and nitrogen oxides. The national standard is exceeded on a third of summer days in some areas of the Chilean Metropolitan Region (MR). This study reports normalized springtime experimental emissions factors (EF) for biogenic volatile organic compounds from tree species corresponding to approximately 31% of urban trees in the MR. A Photochemical Ozone Creation Index (POCI) was calculated using Photochemical Ozone Creation Potential of quantified terpenes. Ten species, natives and exotics, were analysed using static enclosure technique. Terpene quantification was performed using GC-FID, thermal desorption, cryogenic concentration and automatic injection. Observed EF and POCI values for terpenes from exotic species were 78 times greater than native values; within the same family, exotic EF and POCI values were 28 and 26 times greater than natives. These results support reforestation with native species for improved urban pollution management"
Keywords:		Air Pollutants/*analysis Chile Cities *Environmental Monitoring Nitrogen Oxides/analysis Ozone/analysis Terpenes/analysis Trees/*physiology Volatile Organic Compounds/*analysis BVOCs Exotic and native arboreal species Metropolitan Region Photochemical Ozo;
Notes:		"MedlinePrendez, Margarita Carvajal, Virginia Corada, Karina Morales, Johanna Alarcon, Francis Peralta, Hugo eng Research Support, Non-U.S. Gov't England 2013/05/04 Environ Pollut. 2013 Dec; 183:143-50. doi: 10.1016/j.envpol.2013.04.003. Epub 2013 Apr 30"