Air samples were collected in three well characterized locations in the city of Rio de Janeiro, Brazil: downtown, the idle and taxi way areas of the national airport and an urban forest, where the main emissions are from vehicular, aircraft and biogenic sources, respectively. Aldehydes and BTEX concentrations show a characteristic profile which may be attributed to the emission sources. Formaldehyde/acetaldehyde ratios, in the early morning, were 1.39, 0.62 and 2.22 in downtown, airport and forest, respectively. Toluene/benzene ratios, for downtown, airport and forest areas, were 1.11, 1.82 and 1.06, respectively. The results show that the impact of the urban emissions on the forest is negligible as well as the impact of aircraft emissions over the urban area.
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We thank CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) and CAPES for financial support. We also thank Fábio Junior (IQ/UFRJ) for technical assistance in the chromatographic analyses and LADETEC (IQ/UFRJ), directed by Professor Francisco Radler de Aquino Netto, for chromatographic facilities.
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Guimarães, C.S., Custodio, D., de Oliveira, R.C.S. et al. Comparative Study of Automotive, Aircraft and Biogenic Emissions of Aldehydes and Aromatic Compounds. Bull Environ Contam Toxicol 84, 180–184 (2010). https://doi.org/10.1007/s00128-009-9891-5
- Vehicular emissions
- Aircraft emissions
- Biogenic emissions