Version 1
: Received: 24 June 2019 / Approved: 26 June 2019 / Online: 26 June 2019 (07:41:12 CEST)
How to cite:
Fagundes Barbara, V.; de Melo e Silva, D.; Gonçalves Barros, R.; Muro Jr, A.; Antoniosi Filho, N.R. Integrated Assessment of the Quality of Sediments of Open Pit Lakes and the Impact on the Environment. Preprints2019, 2019060263. https://doi.org/10.20944/preprints201906.0263.v1
Fagundes Barbara, V.; de Melo e Silva, D.; Gonçalves Barros, R.; Muro Jr, A.; Antoniosi Filho, N.R. Integrated Assessment of the Quality of Sediments of Open Pit Lakes and the Impact on the Environment. Preprints 2019, 2019060263. https://doi.org/10.20944/preprints201906.0263.v1
Fagundes Barbara, V.; de Melo e Silva, D.; Gonçalves Barros, R.; Muro Jr, A.; Antoniosi Filho, N.R. Integrated Assessment of the Quality of Sediments of Open Pit Lakes and the Impact on the Environment. Preprints2019, 2019060263. https://doi.org/10.20944/preprints201906.0263.v1
APA Style
Fagundes Barbara, V., de Melo e Silva, D., Gonçalves Barros, R., Muro Jr, A., & Antoniosi Filho, N.R. (2019). Integrated Assessment of the Quality of Sediments of Open Pit Lakes and the Impact on the Environment. Preprints. https://doi.org/10.20944/preprints201906.0263.v1
Chicago/Turabian Style
Fagundes Barbara, V., Aldo Muro Jr and Nelson Roberto Antoniosi Filho. 2019 "Integrated Assessment of the Quality of Sediments of Open Pit Lakes and the Impact on the Environment" Preprints. https://doi.org/10.20944/preprints201906.0263.v1
Abstract
The mining industry is known for the intense environmental impacts it triggers, especially when it is developed in an open environment. Pit lakes are formed in depleted deposits and may be promising opportunities for use by society as well as troubling environmental liabilities. While these artificial basins are increasing numerically in many parts of the world, they are still little known researchers in the Environmental Sciences, which makes their environmental management challenging. The main objective of this study was to evaluate the environmental quality of sediments from three deactivated open-pit gold mines, located in the Mara Rosa, Brazil, through chemical, ecotoxicological and genotoxicology analyses. For this purpose, we collected samples in the dry season boom, and subsequently, we analysed metals. In sequence, acute ecotoxicological and a genotoxicology test (comet assay) were developed with Danio rerio fishes, in concentrations of 3.12%; 6.25%; 12.5%; 25%; 50% and 100%, in addition to the control group. The results indicated that the three lakes are environmentally compromised, especially Lago Azul, whose waters and sediments are undergoing an intense process of geological conditioning. Our results did not verify the ecotoxicity of the sediments of any of the lakes, only behavioural alterations in the test organisms exposed to the concentrations of 25%, 50% and 100% of the samples obtained in the Lago Azul. About the sediments, DNA damage at Danio rerio was detected in the three investigated environments, although fishes kept in the water sampled at Lago Azul presented the most extension of DNA damages.
Keywords
acid mine drainage; contaminated areas; environmental; heavy metals; public health
Subject
Biology and Life Sciences, Animal Science, Veterinary Science and Zoology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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