Metais pesados em solos de uma topolitosseqüência do Triângulo Mineiro

Oliveira, Teógenes Senna de; Costa, Liovando Marciano da

doi:10.1590/s0100-06832004000400018

Cited by 17 publications

(7 citation statements)

References 17 publications

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“…Ressalta-se que concentrações elevadas de Cu e Zn são comuns em solos desenvolvidos de basalto em que seu oposto é observado para materiais mais arenosos enquanto outros metais pesados podem apresentar comportamento variado (Oliveira & Costa, 2004 Fadigas et al (2002) ressaltam que variações podem decorrer tanto da diversidade de solos como dos métodos de extração utilizados. Assim e embora o método de análise seja o mesmo (Água Régia) deve-se considerar que os solos amostrados em Santa Catarina são predominantemente derivados de basalto, material naturalmente rico em metais pesados.…”

Section: Methodsunclassified

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Teores de Cu e Zn em perfis de solos de diferentes litologias em Santa Catarina

Hugen

Miquelluti

Campos

et al. 2013

Rev. bras. eng. agríc. ambient.

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RESUMOOs metais pesados têm origem principalmente no solo, por meio do intemperismo de rochas ricas nesses elementos. Objetivou-se, neste trabalho, avaliar os teores de Cu e Zn em 58 perfis modais das principais classes de solo do Estado de Santa Catarina, coletados em ambientes naturais não antropizados e derivados de diferentes litologias. Foram utilizadas 111 amostras de solo considerando-se horizontes A e B. Os teores de Cu e Zn foram extraídos com água régia e quantificados em absorção atômica. Para a análise dos resultados os dados foram categorizados utilizando-se, como variáveis, os teores de Cu e Zn; avaliaramse o efeito de horizonte genético, perfil e o material de origem na distribuição desses metais através das técnicas de análise univariada. Os solos amostrados para este trabalho são derivados, na sua maioria, de rochas ígneas básicas, reflexo da sua quantidade expressiva no estado. Os resultados mostram que, em solos catarinenses, a concentração de Cu e Zn é relacionada à composição geoquímica do material de origem. Assim, referidos elementos podem ser usados na indicação da influência das diferentes litologias como, também, na definição da concentração de base para monitoramento ambiental. Palavras-chave: perfis modais, material de origem, metais pesadosCu and Zn contents in soil profiles of different lithologies in Santa Catarina ABSTRACT Heavy metals occur in the soil through the weathering of rocks rich in these elements. The objective of this study was to evaluate the contents of Cu and Zn in 58 modal profiles of the major soil types of the State of Santa Catarina, collected in natural soils without anthropogenic interference, and derived from different lithologies. One hundred and eleven soil samples were used from the A and B horizons. The Cu and Zn elements were extracted with Aqua Regia method and quantified by atomic absorption. For the analysis of the results, the data was categorized using as variables the concentrations of Cu and Zn, and the effect of genetic horizon, profile, and rock material on the distribution of these metals using univariate techniques was evaluated. The sampled soils for this study are mostly derived from igneous rocks, which reflects the significant amount of soil derived from these materials in the state. The results indicate that the concentrations of Cu and Zn in South Brazilian soils are related to the geochemical composition of the rock material. So, these elements can be used to indicate the influence of different lithologies and the baseline concentration to environmental monitoring.

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Section: Methodsunclassified

“…Tal fato pode ser visualizado em trabalhos estudando o mesmo material de origem e classes distintas de solo, e que se observa variabilidade nos teores de metais (Fadigas et al, 2002;Oliveira & Costa, 2004;Oliveira & Jucá, 2004;Biondi et al, 2011;Pelozato et al, 2011).…”

Section: Introductionunclassified

Teores de Cu e Zn em perfis de solos de diferentes litologias em Santa Catarina

Hugen

Miquelluti

Campos

et al. 2013

Rev. bras. eng. agríc. ambient.

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“…The median values of pH, CEC, and V% in Amazonian rainforest were lower than the mean values for other Brazilian biomes (Marques et al, 2004a;Oliveira and Costa, 2004;Dalmolin et al, 2006;Maia et al, 2015;Souza et al, 2015), for rainforest in Ghana (Bowell, 1993), and for rainforest in southeastern Asia (Richter and Babbar, 1991). In Amazonia, median values were up to 17 % lower in pH, 50 % in CEC, and 78 % in V% (Table 2).…”

Section: Discussionmentioning

confidence: 82%

Geochemical Signature of Amazon Tropical Rainforest Soils

Souza

Fontes

Gilkes

et al. 2018

Rev. Bras. Ciênc. Solo

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Evaluating soil geochemical diversity in the Amazon Basin has been a challenge largely because most study sites have been at the edge of the basin and it is difficult to get samples in such a region. Here we show that even among the most weathered soils, physicochemical soil properties express lithology. Our results are based on topsoil samples collected from different locations in minimally disturbed areas in the state of Amazonas, Brazil. Soil properties were measured using methods which are suitable for highly developed soils. The Chemical Index Alteration and Weathering Index of Parker was calculated based on the content of metal(loid)s in soils determined by X-ray fluorescence. Descriptive statistics, Pearson correlation, and Principal Component Analysis (PCA) were performed on data. In general, Amazon rainforest soils are more deeply weathered than soils in other Brazilian biomes and tropical rainforests in Asia and Africa. The high coefficient of variation of metal(loid) contents express pedogenesis and parent material diversity. Correlation analysis indicated that the tri-pentavalent elements are strongly associated with Al and Fe contents in the topsoil. In contrast, mono-divalent elements are correlated with sand and silt fractions. According to PCA, five soil groups with defined geochemical compositions and degrees of weathering could be identified: i) acidic sandy podzolized soils; ii) acidic loamy ferralitic soils with the highest content of tri-pentavalent ions; iii) acidic clayey kaolinitic soils with low metal(loid) contents; iv) acidic loamy kaolinitic soils with low metal(loid) contents; and v) silty neutral 2:1 clay soils. This study is the first effort to analyze the geochemical diversity in Amazon rainforest soils. These data are extremely valuable in determining the geochemical background for these soil types and this region. Geochemical variability can be predicted to some extent by lithology and pedogenesis, which can be applied to define the sampling required in future studies.

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“…Therefore, even though parent materials have large influence on soil PTE contents (Fadigas et al, 2002;Oliveira and Costa, 2004;Campos et al, 2012), the effect of this factor depends on pedogenic development that, through many reactions and processes, can enhance or attenuate the original contents of rocks and sediments (Kampf and Curi, 2012;Souza et al, 2015).…”

Section: Association Of Potentially Toxic Elements (Pte) To Soil Clasmentioning

confidence: 99%

Mineralogy and Concentration of Potentially Toxic Elements in Soils of the São Francisco Sedimentary Basin

Ferreira

Coelho

Valladares

et al. 2018

Rev. Bras. Ciênc. Solo

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Lithological and geomorphological variations determine formation of soils with different mineralogical constitutions and can influence the distribution of potentially toxic elements (PTE). The aim of this study was to determine the contents of PTE and mineralogical assemblages along soil profiles of different classes and parent materials and to investigate the association among these factors in the São Francisco sedimentary basin in the northern part of the state of Minas Gerais (Brazil). Eight soil pedons of different classes that developed from different parent materials (limestone, siltstone, phyllite, alluvial-colluvial sediments, detrital cover, and rhythmite) were studied in two lithotoposequences. Soil morphological, particle-size, and chemical analyses were carried out for soil characterization and classification. A mineralogical investigation was carried out by X-ray diffraction on soil sand, silt, and clay fractions. Potentially toxic elements were extracted by microwave-assisted acid digestion (EPA 3015A method) and determined in an ICP-OES. Soil mineralogy showed relevant interactions between pedogenesis and morphogenesis. Quartz is the main mineral in the sand and silt fractions, with varying amounts of weatherable primary minerals, whereas kaolinite is the main mineral in the clay fraction, followed by 2:1 clay minerals and oxides. The main soil properties associated with PTE variability were pH, redox environment, mineral and organic reactive surfaces, and clay content. The unique patterns of PTE distribution per pedon and differences in PTE contents in soils from the same parent material, but with different pedogenic evolution, showed that pedogenic processes influence PTE distribution. Mainly Mn, Ni, Pb, and Ba were influenced by parent material, especially limestone, siltstone, and detrital cover, but Cd, As, and Cu were also influenced. To a lesser extent, Mo was influenced by phyllite and Cr by detrital cover and phyllite. Rhodic Ferralsol (Latossolo Vermelho Distrófico típico) was the only taxonomic class to show class association with PTE. The association of Ferralsols (Latossolos) with Cd, Mn, Ni, Pb, Ba, As, and Cu and the low contents of these elements in soils of this class suggest that pedogenic processes common to Ferralsol (Latossolo) evolution are responsible for decreasing levels of these PTE.

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Metais pesados em solos de uma topolitosseqüência do Triângulo Mineiro

Abstract: RESUMO

Cited by 17 publications

References 17 publications

Teores de Cu e Zn em perfis de solos de diferentes litologias em Santa Catarina

Teores de Cu e Zn em perfis de solos de diferentes litologias em Santa Catarina

Geochemical Signature of Amazon Tropical Rainforest Soils

Mineralogy and Concentration of Potentially Toxic Elements in Soils of the São Francisco Sedimentary Basin

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