Concentrations of PM2.5-10 and PM2.5 and metallic elements around the Schmidt Stream area, in the Sinos River Basin, southern Brazil
| Autor: | Tatiane Benvenuti, Liane Bianchin, Daniela Montanari Migliavacca Osório, Marco Antônio Siqueira Rodrigues, J. C. Illi, Darlan Daniel Alves |
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| Jazyk: | angličtina |
| Předmět: |
Pollution
media_common.quotation_subject air pollution Drainage basin Air pollution Mineralogy medicine.disease_cause Metal mev/eds lcsh:Botany Biomonitoring lcsh:Zoology medicine lcsh:QL1-991 lcsh:Science Chemical composition lcsh:QH301-705.5 media_common particulate matter geography geography.geographical_feature_category biology Study methodology Lolium multiflorum biology.organism_classification lcsh:QK1-989 lolium multiflorum lcsh:Biology (General) visual_art Environmental chemistry biomonitoring visual_art.visual_art_medium lcsh:Q General Agricultural and Biological Sciences |
| Zdroj: | Brazilian Journal of Biology, Vol 75, Iss 4 suppl 2, Pp 43-52 Brazilian Journal of Biology v.75 n.4 suppl.2 2015 Brazilian Journal of Biology Instituto Internacional de Ecologia (IIE) instacron:IIE |
| ISSN: | 1678-4375 |
| Popis: | This research aimed to evaluate the air quality, by determining the concentrations of PM2.5-10, PM2.5 and the metallic elements Al, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Zn and Hg in the leaf part of ryegrass (Lolium multiflorum) in an area close to Schmidt Stream, at the lower section of Sinos River Basin (SRB), in a research campaign of six months, from October 2013 to March 2014. The particles collected in the PM sampling were analyzed by Scanning Electron Microscopy (SEM) combined with Energy Dispersive X-ray Spectrometry (EDS), in order to study their morphology and chemical composition. The mean concentration of PM2.5-10 was 9.1 µg m–3, with a range of 2.2 µg m–3 to 15.4 µg m–3 and the mean concentration of PM2.5was 4.7 µg m–3, with a range of 1.9 µg m–3 to 8.2 µg m–3. Concentrations of metallic elements, especially Pb, Cr and Zn, were classified as Class 4 (very high pollution levels), according to the classification proposed by Klumpp et al. (2004). Chemical and morphological analysis of PM revealed the presence of particles of biological origin, soot (Cr, Fe, Ni, Zn, Cd, Hg and Pb), salts (KCl) and soil resuspension (Al and Si). The integrated study methodology, employing environmental variables, such as PM and ryegrass, can be of help in the preparation of wide-ranging environmental diagnoses, in addition providing information needed to develop precautionary measures designed to minimize the effects of atmospheric pollution that takes into consideration the environment’s supportive capacity and environmental quality. |
| Databáze: | OpenAIRE |
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