Evidence of tin and other anthropogenic metals in particulate matter in Lisbon, Portugal |
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| Authors: | J. Z. Edwards S. Landsberger M. C. Freitas |
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| Affiliation: | (1) School of Biological Sciences, The University of Texas at Austin, 1 University Station, A6500, Austin, TX 78712-0182, USA;(2) Nuclear Engineering Teaching Laboratory, The University of Texas at Austin, J.J. Pickle Research Campus, Building 159, Austin, TX 78712, USA;(3) Technological and Nuclear Institute, Reactor, E.N. 10, 2686-953 Sacavem, Portugal |
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| Abstract: | Thermal and epithermal neutron activation analysis techniques were used to analyze 27 Teflon air filters which were exposed to ambient air in Lisbon, Portugal, in February 2007. Tin was detected which is strongly suggestive of an anthropogenic source. Arsenic, antimony and copper were shown to be highly correlated, which is also suggestive of anthropogenic pollution. Trace element analysis of short- and medium-lived isotopes was performed yielding concentration information of various elements. Analytical sensitivities were enhanced using a Compton suppression system. Enrichment factor analysis shows that arsenic, tin, zinc, copper and antimony are at elevated concentrations in the Lisbon atmosphere. |
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| Keywords: | Air pollution Heavy metals |
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