Biogenic volatile organic compounds from the urban forest of the Metropolitan Region, Chile

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 fac...

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Bibliographic Details
Published in:Environmental pollution (1987) 2013-12, Vol.183, p.143-150
Main Authors: Préndez, Margarita, Carvajal, Virginia, Corada, Karina, Morales, Johanna, Alarcón, Francis, Peralta, Hugo
Format: Article
Language:English
Subjects:
Air Pollutants - analysis
Applied sciences
Atmospheric pollution
Automation
BVOCs
Chile
Cities
desorption
Dispersed sources and other
emissions factor
Environmental Monitoring
Exact sciences and technology
Exotic and native arboreal species
forests
indigenous species
introduced species
Metropolitan Region
nitrogen oxides
Nitrogen Oxides - analysis
Organic compounds
Ozone
Ozone - analysis
Photochemical
Photochemical Ozone Creation Index
Photochemical Ozone Creation Potential
Pollution
Pollution abatement
Pollution sources. Measurement results
Reforestation
spring
summer
Terpenes
Terpenes - analysis
terpenoids
Trees
Trees - physiology
troposphere
volatile organic compounds
Volatile Organic Compounds - analysis
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Summary: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. First experimental determination of the emission factors of biogenic volatile organic compounds in the urban forest of the Metropolitan Region, Chile.
ISSN:0269-7491
1873-6424
DOI:10.1016/j.envpol.2013.04.003