Análisis multielemental de cortezas de fresno (Fraxinus Pennylvanica) a lo largo de un gradiente urbano-periurbano en la metrópolis de Buenos Aires

PERELMAN PE; CASTRO MA; NAVARRO LE; RECCHI M; ARRIAGA M; LOPEZ S E; MARTÍNEZ CAARRETERO E; FAGGI A

REVISTA DEL MUSEO ARGENTINO DE CIENCIAS NATURALES.

M A C N

Lugar: Buenos Aires; Año: 2006 vol. 8 p. 231 - 236

1514-5158

Abstract: Multielemental analysis of Fraxinus pennsylvanica bark along an urban to periurbangradient in Buenos Aires metropolis. In Buenos Aires metropolitan area a multielemental analysis of barksamples of Fraxinus pennsylvanica have been performed. The samples were analysed using ICP-OES. Theresulting data have been treated by an ANOVA and by an ordination technique based on reciprocal averaging(Detrended Correspondence Analysis). The results allow us to confirm that the major contamination source isof geogenic origin with the presence of Ba, Al, Mg and Fe being principal soil components carried out by wind.Also part of these elements and the presence of Cr, Zn, Pb, Mg and Ni in the urban areas indicate anthropogenicinfluence and are suspected to be associated to vehicle and related economic activities. The periurban area ischaracterised by major values of Ba and Cu linked to the maintenance of swimming pools, fungicides and biomasscombustion.Key words: bark, chemical elements, air pollution