Journal of Pollution Effects & Control
Open Access
ISSN: 2375-4397
ISSN: 2375-4397
Madson de Godoi Pereira
Department of Exact and Earth Sciences, R Silveira Martins, 2555, 41.150-000, Salvador-BA,
Brazil
Research Article
Heavy Metals in an Important Section of the São Francisco River (Northeast Brazil): Distribution Profile, Accumulation Mechanisms, and Risks of Dissemination through the Food Chain
Author(s): Madson de Godoi Pereira, Souza CLM, Sachdev RDL, Santos AVD, Pinto PADC, Souza LA, Ribeiro JN, Oliveira JPD, Guimarães MCC and Ribeiro AVFNMadson de Godoi Pereira, Souza CLM, Sachdev RDL, Santos AVD, Pinto PADC, Souza LA, Ribeiro JN, Oliveira JPD, Guimarães MCC and Ribeiro AVFN
Background: This work assessed the distribution of Cd, Cr, Cu, Mn, Ni, Pb, and Zn in an important Brazilian fluvial section, which has never been evaluated before this study
Procedures: Along six samplings, total and bioavailable concentrations of these metals were quantified in water and sediments, respectively, by atomic spectrometry. Bioavailable metal concentrations were extracted from sediments by 0.1 molL-1 HCl, while total metal concentrations were released in water after acidic decomposition with 14 molL-1 HNO3. Sediments were submitted to analyses of X-ray diffractometry, thermogravimetry, infrared spectrophotometry, electronic scanning microscopy, granulometry, and density. Subsequently, adsorption tests were performed with those elements that tend to exist as cations in river water (Cd2+.. View More»
DOI:
10.4172/2375-4397.1000193