Journal of Pollution Effects & Control
Open Access
ISSN: 2375-4397
ISSN: 2375-4397
Oliveira JPD
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): Pereira MDG*, Souza CLM, Sachdev RDL, Santos AVD, Pinto PADC, Souza LA, Ribeiro JN, Oliveira JPD, Guimarães MCC and Ribeiro AVFN
Pereira MDG*, 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