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2431931 
Journal Article 
Emission factors of biogenic volatile organic compounds in various stages of growth present in the urban forest of the Metropolitan Region, Chile 
Margarita, P; Karina, C; Johanna, M 
2013 
1 
Research Journal of Chemistry and Environment
ISSN: 0972-0626 
17 
11 
1-9 
WOS:000325900300001 
Chile's capital in the Metropolitan Region has an atmosphere polluted especially by particulate matter in winter and by ozone in summer. Trees are used as a natural strategy for decontamination; however, they emit biogenic volatile organic compounds (BVOCs) whose atmospheric reactions generate secondary chemical species, including ozone. This study presents the experimental emission factors (EF) of BVOCs in young and adult individuals of three native trees (Cryptocarya alba, Quillaja saponaria and Schinus molle) and one non-native (Quercus suber).



To distinguish the environmental impact of the young and adult individuals studied, the EF and the Photochemical Ozone Creation Index (POCI) were calculated. Results show that the concentrations of isoprene emitted by the trees studied (young or adult) correlated with neither PAR nor temperature in autumn, monoterpenes correlated with PAR and/or temperature (young or adult), but the specific monoterpene depended on the tree species. The open question is how much would be necessary to normalize the EF in order to obtain better values for introducing an emission inventory which elaborated more reliable decontamination strategies. 
Native and non-native species; BVOCs; emission factor; growth ages; Santiago de Chile