Metal Pollution in the Environment of Minas Gerais State – Brazil

Veado, M. A. R. V.; Arantes, I. A.; Oliveira, Arno Heeren de; Almeida, M. R. M. G.; Miguel, R. A.; Severo, M. I.; Cabaleiro, H. L.

doi:10.1007/s10661-006-8716-9

Cited by 45 publications

(13 citation statements)

References 9 publications

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“…Concentrations between 2.2 and 105 μg L −1 were found, and according to the authors, the principal form of human contamination in the region is likely due to the ingestion of contaminated dust, fish, and water (Matschullat et al 2000;Deschamps and Matschullat 2007). The presence of toxic metals in water and sediments has also been reported by Veado et al (2006) and Pereira et al (2007).…”

Section: Introductionsupporting

confidence: 65%

“…The most abundant sulfide minerals are pyrite (FeS 2 ), arsenopyrite (FeAsS), and pyrrhotite (Fe 1−x S) (Matschullat et al 2000;Vial et al 2007), yet trace metal sulfides occur in subordinate phases as well (Gonçalves et al 2007). Previous studies have revealed high levels of arsenic (Matschullat et al 2000;Deschamps et al 2002;Borba et al 2003;Veado et al 2006;Deschamps and Matschullat 2007;Gonçalves et al 2007;Pereira et al 2007) in aquatic and terrestrial environments in different regions of the IQ. According to Deschamps et al (2002), such high amounts of arsenic in water, soils, and sediments in the IQ is related to both natural causes as well as past and recent mining activities.…”

Section: Introductionmentioning

confidence: 94%

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Arsenic and trace metals in river water and sediments from the southeast portion of the Iron Quadrangle, Brazil

Varejão

Bellato

Fontes

et al. 2010

Environ Monit Assess

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The Iron Quadrangle has been one of the most important gold production regions in Brazil since the end of the seventeenth century. There, arsenic occurs in close association with sulfide-rich auriferous rocks. The most abundant sulfide minerals are pyrite and arsenopyrite, yet trace metal sulfides occur in subordinate phases as well. Historical mining activities have been responsible for the release of As and trace metals to both aquatic and terrestrial environments close to mining sites in the region. Therefore, this study was aimed to evaluate the distribution and mobility of As, Cd, Co, Cr, Cu, Ni, Pb, and Zn in streams in the southeast portion of the Iron Quadrangle between the municipalities of Ouro Preto and Mariana, the oldest Brazilian Au mining province. Total concentrations of some trace metals and arsenic in water were determined. The four-stage sequential extraction procedure proposed by the commission of the European Communities Bureau of Reference (BCR) was used to investigate the distribution of these elements in stream sediments. Arsenic concentration in water was > 10 μg L⁻¹ (maximum limit permitted by Brazilian environmental regulations for water destined for human consumption) at all sampling sites, varying between 36.7 and 68.3 μg L⁻¹. Sequential extraction in sediments showed high concentrations of As and trace metals associated with easily mobilized fractions.

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Section: Introductionsupporting

confidence: 65%

Section: Introductionmentioning

confidence: 94%

Arsenic and trace metals in river water and sediments from the southeast portion of the Iron Quadrangle, Brazil

Varejão

Bellato

Fontes

et al. 2010

Environ Monit Assess

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“…Other American countries with an important long mining tradition have assessed soil contamination in the vicinity of mines such as those of San Luis de Potosí in Mexico [58] or Santa Barbara [59]. Contamination by trace elements from Minas Gerais (Brazil) has been found to seriously affect the local flora and fauna within a range of 400 km [60].…”

Section: Problems In Agricultural Soils Affected By Sulfide Miningmentioning

confidence: 99%

Assessing Soil Quality in Areas Affected by Sulfide Mining. Application to Soils in the Iberian Pyrite Belt (SW Spain)

2011

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Abstract:The characterization, evaluation and remediation of polluted soils is one of the present environmental challenges to be addressed in the coming years. The origin of trace elements in soils can be either geogenic or anthropogenic, but only the latter is interesting from a legal point of view. The hazard of the pollutants in the soils not only depends on their total concentration, but particularly on their availability. The mobility of the trace elements depends on their speciation, and it is also affected by several soil parameters. Mining activity is one of the most important anthropogenic causes of soil pollution. As a case study, this work is focused in the Riotinto mining area (Iberian Pyrite Belt, IPB, SW Spain). The IPB is one of the most important metallogenic provinces in the world and it has been exploited for thousands of years. The disposal of mining residues has produced important sources of contamination by trace elements and acidic waters affecting soils and rivers. In addition to these problems, the closure of mines in the Pyrite Belt at the end of the 20th Century has led to a great loss of employment, which has caused the development of an intensive agriculture of citrus fruits as a new source of income. The intensive growing of citrus fruits and the traditional subsistence agriculture have been developed surrounding the mining areas and on floodplains near to mining sites. The level of soil pollution has not been taken into account in these cases, nor has its impact on the health of the inhabitants of these areas. Therefore, it is of great interest to study the current state of the cultivated soils and the sources and types of contaminants derived from mining activity in order to program its decontamination, where appropriate, according to legislation. In order to know the present and future hazard posed by the soils chemical and mineralogical speciation has been carried out, given that the availability of a metal depends on the phase OPEN ACCESSMinerals 2011, 1 74 in which it is found. The results showed that mining activity has caused high levels of As, Cu, Pb and Zn in several cultivated soils. Moreover, Cu, Pb and Zn showed a high bioavailability. This suggests that at least other studies are necessary to preserve health in the inhabitants of this area. The methodology carried out in this work allowed to select potentially polluted areas where agricultural activities are not recommended.

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“…Such limitation was noted to bear substantial implications for the post-Kyoto discussion. The situation was found to be exacerbated on both hemispheres by enhanced nitrogen deposition from agricultural practices (in addition to combustion of fossil fuels; Bytnerowicz et al, 2013;Kozovits and Bustamante, 2013) and regionally by heavy-metal pollution from open-pit mining (such as in the State of Minas Gerais, Brazil;Veado et al, 2006). A research gap was identified in understanding air pollution effects, as part of climate change, on natural and managed forest and woodland ecosystems.…”

mentioning

confidence: 99%

Vegetation Response to Climate Change and Air Pollution – Unifying Research and Evidence from Northern and Southern Hemisphere

Matyssek

Kozovits

Wieser

2015

Environmental Pollution

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Metal Pollution in the Environment of Minas Gerais State – Brazil

Cited by 45 publications

References 9 publications

Arsenic and trace metals in river water and sediments from the southeast portion of the Iron Quadrangle, Brazil

Arsenic and trace metals in river water and sediments from the southeast portion of the Iron Quadrangle, Brazil

Assessing Soil Quality in Areas Affected by Sulfide Mining. Application to Soils in the Iberian Pyrite Belt (SW Spain)

Vegetation Response to Climate Change and Air Pollution – Unifying Research and Evidence from Northern and Southern Hemisphere

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