|
|
|
|
| |
|
|
| NIEMEYER, J. C.; MOREIRA-SANTOS, M.; RIBEIRO, R.; RUTGERS, M.; NOGUEIRA, M. A.; SILVA, E. M. da; SOUSA, J. P.. |
| This study presents data on the detailed evaluation (tier 2) of a site-specific ecological risk assessment (ssERA) in a former smelter area contaminated with metals (Santo Amaro, Bahia, Brazil). Combining information from three lines of evidence (LoE), chemical (Chem-LoE), ecotoxicological (EcotoxLoE) and ecological (EcoLoE), in the Triad approach, integrated risk values were calculated to rank sites and confirm the potential risk disclosed with tier 1. Risk values were calculated for the habitat and for the retention functions in each sampling point. Habitat function included the ChemLoE calculated from total metal concentrations. The EcotoxLoE was based on reproduction tests with terrestrial invertebrates (Folsomia candida, Enchytraeus crypticus, Eisenia... |
| Tipo: Separatas |
Palavras-chave: Toxidez; Contaminação; Metal.; Environmental assessment. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1028099 |
| |
|
|
| LOMBARDI, M. C.; COSTA, L.; NOBREGA, J.; NOGUEIRA, A. R. de A.. |
| The complete sample decomposition is not always necessary when measurements are carried out using optical techniques. Depending on both technique employed and sample matrix characteristics, an extraction procedure can be completely suitable for quantitative determinations. To implement this approach is essential to perform a critical evaluation of the behavior of each element, of the extractor solution, and of the temperature and time of extraction. The temperature can be controlled adopting microwave-assisted procedures that guarantee fast heating and repeatability. In this work an open-vessel microwave system (Star 6, CEM) was employed to investigate the efficiency of the extraction procedures. The extraction of Al, Ca, Cu, Fe, Mg, Mn,:and Zn was... |
| Tipo: Separatas |
Palavras-chave: Microwave extractions; Biological; Botanical; Material; Microondas extracao; Biologico material; Botanico material.; Metal.. |
| Ano: 1999 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/44780 |
| |
|
|
|
