PIXE and RBS elemental analyses of tree rings from Mexico Basin forests as a record of pollution
- Instituto de Fisica, Universidad Nacional Autonoma de Mexico, Apartado Postal 20-364, 01000 Mexico, D.F. (Mexico)
Particle induced X-ray emission (PIeXE) and Rutherford backscattering (RBS) elemental analyses of tree rings and soils from forests around the Mexico City Metropolitan Area (MCMA) were performed. The aim was to estimate the impact of pollution on the forests. Cores from Pinus montezumae and Abies religiosa trees, in four forests around the MCMA (Desierto de los Leones, Iztapopocatepetl, Villa del Carbon and Zoquiapan) and a reference site (El Chico). Differences were observed in samples from the different forests, showing higher values in the areas closest to the MCMA. A correlation of several elements with ring width was found using cluster analysis. Additionally, soil analyses from different depths in the forests were carried out, trying to relate the elemental concentrations measured in the tree rings with cation mobility. In this case, samples taken in 1993 and 1999 were analyzed, showing elemental mobility to the various depths.
- OSTI ID:
- 20632617
- Journal Information:
- AIP Conference Proceedings, Vol. 680, Issue 1; Conference: 17. international conference on the application of accelerators in research and industry, Denton, TX (United States), 12-16 Nov 2002; Other Information: DOI: 10.1063/1.1619755; (c) 2003 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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