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Información tecnológica

On-line version ISSN 0718-0764

Abstract

PRENDEZ, M.  and  PERALTA, H.. Determination of Emission Factors of Volatile Organic Compounds of Two Native Tree Species in Chile's Metropolitan Region. Inf. tecnol. [online]. 2005, vol.16, n.1, pp.17-27. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642005000100004.

The present study reports on some emission factors for six monoterpenes released by Cryptocarya alba (peumo) and Schinus molle (pimiento) which represent 2.5 % of the tree species occurring in Chile's Metropolitan Region. Biogenic volatile organic compounds (BVOCs) participate in tropospheric ozone formation, and models used to design strategies to control and/or lower ozone concentrations require knowing the emission factors of these BVOCs. In this context, there is very little information about Chilean native tree species as those considered in this study. The static enclosure method and Tenax adsorption were used for sampling and GC-FID was used for quantification of BVOCs. The highest emission factors for peumo were 0.0049 to 0.0165 gg-1dwh-1 for cineole and 0.0030 to 0.0117 gg-1dwh-1 for limonene; for pimiento, the highest values were 0.0097 to 0.128 gg-1dwh-1 for -pinene and 0.0029 to 0.108 gg-1dwh-1 for 3-carene. The emission factors were highly dependent on environmental conditions and the tree species.

Keywords : monoterpene emissions; Chilean trees; BVOC emission factors; ozone precursors.

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