| Revista: | Acta scientiarum. Agronomy |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000460141 |
| ISSN: | 1679-9275 |
| Autores: | Silva, Yuri Jacques Agra Bezerra da1 Cantalice, José Ramon Barros2 Singh, Vijay Pal3 Nascimento, Clístenes Williams Araújo do2 Wilcox, Bradford Paul4 Silva, Ygor Jacques Agra Bezerra da2 |
| Instituciones: | 1Universidade Federal do Piaui, Departamento de Agronomia, Bom Jesus, Piaui. Brasil 2Universidade Federal Rural de Pernambuco, Departamento de Agronomia, Recife, Pernambuco. Brasil 3Texas A&M University, Biological and Agricultural Engineering Department, College Station, Texas. Estados Unidos de América 4Texas A&M University, Department of Ecosystem Science and Management, College Station, Texas. Estados Unidos de América |
| Año: | 2019 |
| Volumen: | 41 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | Metal concentrations in suspended sediments of one of the most polluted rivers in Brazil were measured. Concentrations of Cd, Cr, Cu, Fe, Mn, Ni, Pb, and Zn were determined by inductively coupled plasma while Hg and As were analyzed with hydride generation flow injection atomic absorption spectroscopy. Contamination of As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, and Zn was assessed using pollution indices, ecological risk assessment, statistical multivariate techniques and comparison with sediment quality guidelines. Suspended sediments of the upstream portion of the Ipojuca River are moderately contaminated, especially with Mn and As. On the other hand, sediments of the downstream section are highly contaminated, mainly with Zn, Pb, and As. Furthermore, the mean Ei (potential ecological risk) values of Pb and As showed considerable ecological risk in the downstream cross section. The comparison of our data with sediment guideline values indicated that the concentrations of Mn and Pb in the upstream section of the Ipojuca River pose a risk to sediment-dwelling organisms, while Pb and Zn are the metals of concern in the downstream section |
| Disciplinas: | Agrociencias, Biología |
| Palabras clave: | Ecología, Suelos, Metales pesados, Cuencas, Contaminación, Conservación de suelos, Sedimentos, Brasil |
| Keyword: | Ecology, Soils, Heavy metals, Watersheds, Pollution, Soil conservation, Sediments, Brazil |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
