| Revista: | Quimica nova |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000313369 |
| ISSN: | 0100-4042 |
| Autors: | Moura, Marcio Cleto Soares de1 Lopes, Ana Nidia Cunha Moita, Graziella Ciaramella Moita-Neto, Jose Machado |
| Institucions: | 1Universidade Federal do Piaui, Departamento de Quimica, Teresina, Piaui. Brasil |
| Any: | 2006 |
| Període: | Jun |
| Volum: | 29 |
| Número: | 3 |
| Paginació: | 429-435 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | The concentrations of Cu, Pb, Zn, Cr, Ni, Al, Mn and Fe were measured by atomic absorption spectrometry, of 19 topsoil samples collected in the Teresina city urban area to discriminate natural and anthropic contributions and identify possible sources of pollution. The average concentrations of Cu, Zn, Pb and Cr of the urban soils were 6.11, 8.56, 32.12 and 7,17 mg/kg-1, respectively. Statistical analysis techniques, such as principal component analysis (PCA) and hierarchical cluster analysis (HCA), were used to analyze the data. Mn, Ni and Cr levels were interpreted as natural contributions, whereas Pb, Zn and, in part, Cu were accounted for mainly by anthropic activities. High Pb levels were observed in the ancient avenues |
| Disciplines | Geociencias, Química |
| Paraules clau: | Geología, Suelos urbanos, Contenido de metales, Metales pesados, Espectrometría de absorción atómica, Análisis multivariado |
| Keyword: | Earth sciences, Chemistry, Geology, Urban soil, Metal contents, Heavy metals, Atomic absorption spectrometry, Multivariate analysis |
| Text complet: | Texto completo (Ver HTML) |
