Spatial distribution of hg and as in rivers of the eastern amazon impacted by gold mining
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Published:2023-05-31
Issue:2
Volume:15
Page:1807-1830
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ISSN:1989-4155
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Container-title:Cuadernos de Educación y Desarrollo
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language:
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Short-container-title:Cuad. Ed. Desar.
Author:
da Silva Luciano Vieira Dias,Pereira Simone de Fátima Pinheiro,Carneiro Cristiane Costa,De Melo e Silva Thiago,Rocha Ronaldo Magno,Da Costa Hemilton Cardoso,De Souza Alan Marcel Fernandes,De Souza Junior Pedro Moreira,Silva e Silva Cleber,Dos Santos Davis Castro
Abstract
Human activities contribute to the contamination of rivers by toxic elements, causing serious effects on the health of traditional communities in the Amazon region. With the aim of verifying the spatial distribution of Hg and As concentrations in a region affected by gold mining in the Baú, Curuá, and Curuaés River basin, in the municipality of Altamira-PA, in the Brazilian Amazon, a study was carried out using geostatistical maps. The quantification of elements was performed using Inductively Coupled Plasma Emission Spectrometry with hydride generation (HGICP-OES). The obtained values were exported for use in computational processes with the QGIS and Surfer software, in order to produce isotheor maps. The results of the maps showed Hg concentrations that exceeded the limit established by the National Council for the Environment, which is 0.2 µg L-1. This indicates that the presence of mining in the region represents a threat to the ecosystem of these rivers. On the other hand, the maps for As showed that no station presented results that exceeded concentrations above the limit allowed for this element, which is 10 µg L-1. Based on these results, the geostatistical maps were effective in monitoring areas affected by toxic elements and can be used as a tool in the control of river water quality.
Publisher
South Florida Publishing LLC
Reference53 articles.
1. Adani, P., Sawale, A.A., Nandhagopal, G. 2022. Bioaccumulation of heavy metals in the food components from water and sediments in the coastal waters of Kalpakkam, Southeast coast of India. Environmental Nanotechnology, Monitoring & Management 17, 100627. https://doi.org/10.1016/j.enmm.2021.100627. 2. APHA - American Public Health Association, AWWA - American Water Works Association and WEF - Water Environment Federation. 2017. Standard Methods for the Examination of Water and Wastewater, 23th ed.; United States, Washington DC, 4-77. 3. Arantes, F.P., Savassi, L.A., Santos, H.B., Gomes, M.V.T., Bazzoli, N. 2016. Bioaccumulation of mercury, cadmium, zinc, chromium, and lead in muscle, liver, and spleen tissues of a large commercially valuable catfish species from Brazil. An. Acad. Bras. Ciênc. 88, 137-147. https://doi.org/10.1590/0001-3765201620140434. 4. Ariya, P.A., Amyot, M., Dastoor, A., Deeds, D., Feinberg, A., Kos, G., Poulain, A., Ryjkov, A., Semeniuk, K., Subir, M., Toyota, K. 2015. Mercury Physicochemical and Biogeochemical Transformation in the Atmosphere and at Atmospheric Interfaces: A Review and Future Directions. Chem. Rev. 115, 3760-3802. https://doi.org/10.1021/cr500667e. 5. Azevedo, L., Pereira, M.J., Ribeiro, M.C., Soares, A. 2020. Geostatistical COVID-19 infection risk maps for Portugal. Int J Health Geogr 19, 25. https://doi.org/10.1186/s12942-020-00221-5.
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