Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Metals in the Sediments of Reservoirs: Is There Potential Toxicity?

Full text
Author(s):
Karen de Souza Ferreira [1] ; Bárbara Rani-Borges [2] ; Gustavo Laranjeira Melo Santos [3] ; Sheila Cardoso-Silva [4] ; Lilian Rose Marques de Sá [5] ; Marcelo Pompêo [6]
Total Authors: 6
Affiliation:
[1] Universidade Estadual Paulista - Brasil
[2] Universidade Estadual Paulista - Brasil
[3] Universidade Estadual Paulista - Brasil
[4] Universidade Federal do Acre - Brasil
[5] Universidade de São Paulo - Brasil
[6] Universidade de São Paulo - Brasil
Total Affiliations: 6
Document type: Journal article
Source: Sociedade e Natureza; v. 33, 2021-11-22.
Abstract

Abstract Metals are important recognized for their potentially toxic character to communities, in addition to being bioaccumulative in some organisms. In this work, the concentrations of cadmium, chromium, copper, lead, mercury, and zinc in sediments from three sampling points in the Billings, Guarapiranga, and Rio Grande reservoirs (São Paulo, Brazil) between the years 2008 and 2017 were evaluated. Data were compared to regional reference values, to local legislation, and to sediment quality values: threshold effect level (TEL), probable effect level (PEL), and Sediment Assessment Criteria (CQS). Billings reservoir sediment samples had the highest number of metals with contents above the reference values and above the PEL. There were high copper concentrations in the Guarapiranga and the Rio Grande reservoirs probably due to the management system currently in use, which is based on Copper Sulphate Pentahydrate. The data analyzed here indicate that the lack of regionalized indexes with background values and toxicity criteria for sediment, specific for each of these reservoirs, is a great problem for more accurate and predictive analysis. This study shows that the current contamination levels of the reservoir sediments are reducing the water. (AU)

FAPESP's process: 19/10845-4 - Water quality of São Paulo reservoirs: the weight of evidence
Grantee:Marcelo Luiz Martins Pompêo
Support Opportunities: Regular Research Grants