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

P . E. PERELMAN; M. A. CASTRO; L. E. NAVARRO; M. RECCHI; M. ARRIAGA; S. LÓPEZ; E. MARTÍNEZ CARRETERO; A. FAGGI

Rev. Mus. Argentino Cienc. Nat

Rev. Mus. Argentino Cienc. Nat.

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

1514-5158

Abstract: Multielemental analysis of Fraxinus pennsylvanica bark along an urban to periurban gradient in Buenos Aires metropolis. In Buenos Aires metropolitan area a multielemental analysis of bark samples of Fraxinus pennsylvanica have been performed. The samples were analysed using ICP-OES. The resulting 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 is of 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 anthropogenic influence and are suspected to be associated to vehicle and related economic activities. The periurban area is characterised by major values of Ba and Cu linked to the maintenance of swimming pools, fungicides and biomass combustion.