Heavy metals in the São Mateus Stream Basin, Peixe River Basin, Paraiba do Sul River Basin, Brazil

Abstract

Large-scale enterprises with high potential to pollute need to be licensed, properly supervised and monitored during and after their operations to avoid and/or mitigate impacts in their areas of influence. The São Mateus Stream Basin (SMSB), located in rural area of Juiz de Fora (MG), is impacted by several activities, highlighting a deactivated landfill and an industrial park. This study monitored the concentration of heavy metals in the waters of the main tributaries of the SMSB. Strategic points were selected in each sub-basin, before the mouth and meeting of the Bocaina, Salvaterra and São Mateus Streams, measured monthly between January and December 2014 using the Metalyser probe, and applying the Contamination Index (CI). The CI results showed that the enterprises located in this basin, especially the Park Sul and Salvaterra Landfill in the Bocaina and Salvaterra Streams, respectively, are negatively impacting the quality of these waters. Metals such as Hg, Cu, Pb and Zn were the ones that most violated CONAMA Resolution 357/2005, directing management in order to control the sources of these metals, which are cumulative in organisms and damage the whole trophic chain. The inhabitants of this rural area are not served by any water concessionaire and make use of springs and wells below the level of these streams.

Human Risk from Exposure to Heavy Metals and Arsenic in Water from Rivers with Mining Influence in the Central Andes of Peru

“…They found concentrations within limits for unpolluted water and sediment; however, in fish the concentrations of Cd and Pb were high. Barra-Rocha et al [17] monitored the concentration of heavy metals in the waters of the main tributaries of the São Mateus stream basin in Brazil, finding pollution rates that were of concern due to contents of Hg, Cu, Pb, and Zn above environmental regulations.…”

The present and potential future of aqueous mercury preservation: a review

“…For pristine waters, these probes will likely struggle to produce an accurate quantitative result as mercury concentrations can be as low as 1 ng L −1 Hg 2+ . Rocha et al (2019) reported detection limits of 5 mg L −1 Hg 2+ in river water using a portable analyser, 23 unsuitable for the WHO guideline value 1 of 2 mg L −1 Hg but may be useful for indicating severe Hg pollution. A similar detection limit was reported by Bhardwaj et al (2020) in pond and drain water.…”

Removal of Paracetamol and Cu2+ from Water by Using Porous Carbons Derived from Agrowastes

“…Besides PhACs, ions of heavy metals, such as Cu 2+ , are also commonly found in water bodies [27][28][29]. Copper has been known for many decades as a pollutant for aquatic ecosystems, not only concerning the water itself but also the sediments and biota.…”