Skip to main content

Advertisement

Log in

Environmental Risk of Metal Contamination in Sediments of Tropical Reservoirs

  • Published:
Bulletin of Environmental Contamination and Toxicology Aims and scope Submit manuscript

Abstract

Reservoir sediment can work as both sink and source for contaminants. Once released into the water column, contaminants can be toxic to biota and humans. We investigate potential ecological risk to benthic organisms by metals contamination in six reservoirs in Southeast Brazil. Results of the bioavailable fraction of copper (Cu), chromium (Cr), cadmium (Cd), lead (Pb), zinc (Zn), and iron (Fe) in sediment samples are presented. Considering Cu, Cd, and Zn concentrations, about 6% of the samples exceeded the threshold effect levels of sediment quality guidelines. The comparison to sediment quality guidelines is conservative because we used a moderate metal extraction. Control of contaminant sources in these reservoirs is key because they are sources of water and food. The mixture toxicity assessment showed an increased incidence of toxicity to aquatic organisms showing that mixture toxicity should be taken into account in sediment assessment criteria.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

Download references

Acknowledgements

We are grateful for the study area map and scientific contribution provided by José Reinaldo Paranaiba. This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001. This work was also supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for Research Productivity Grant provided to FR (473141/2013–2).

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Gabrielle R. Quadra.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Electronic supplementary material

Below is the link to the electronic supplementary material.

Electronic supplementary material 1 (PDF 147 kb)

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Quadra, G.R., Lino, A., Sobek, A. et al. Environmental Risk of Metal Contamination in Sediments of Tropical Reservoirs. Bull Environ Contam Toxicol 103, 292–301 (2019). https://doi.org/10.1007/s00128-019-02668-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00128-019-02668-0

Keywords

Navigation