Using wild plant species as indicators for the accumulation of emissions from a thermal power plant, Candiota, South Brazil |
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| Authors: | Armando Molina Divan Junior Paulo Luiz de Oliveira Carolina Trindade Perry Vera Lúcia Atz Letícia Nonnenmacher Azzarini-Rostirola Maria Teresa Raya-Rodriguez |
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| Institution: | 1. Laboratory of Plant Bioindication, Center of Ecology, Federal University of Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil;2. Post-Graduation in Ecology, Federal University of Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil;3. Laboratory of Atomic-Absorption Spectroscopy, Center of Ecology, Federal University of Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil;4. Laboratory of Biology, Colégio Anchieta, Sociedade Antônio Vieira, 91330-000 Porto Alegre, RS, Brazil;5. Department of Ecology, Federal University of Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil |
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| Abstract: | The impact of Candiota coal-fired thermal power plant on air quality was evaluated during two years by means of passive biomonitoring. The monitoring consisted of the quarterly collection of leaf samples of Baccharis dracunculifolia, Elephantopus mollis, Eryngium horridum, Paspalum notatum and Piptochaetium montevidense or the shoot of Baccharis trimera at five sites located in the area around the power plant. The element load of these plants was used as indicator for atmospheric pollution. In the samples collected, sulphur and heavy metal cadmium contents were measured. Among the species evaluated, E. mollis presented the highest potential to accumulate metal, followed by B. trimera. The Aeroporto and AFUCAN sampling sites, located in the prevailing wind directions, presented the highest level of metal contamination. |
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| Keywords: | Atmospheric pollution Bioaccumulation Biomonitoring Cadmium Coal Heavy metal Indicator species Sulphur |
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