From geochemical background determination to pollution assessment of heavy metals in sediments and soils

Dung, Trần Thị Thu; Cappuyns, Valérie; Swennen, Rudy; Phung, Nguyen Ky

doi:10.1007/s11157-013-9315-1

Cited by 261 publications

(133 citation statements)

References 85 publications

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“…The enrichment factor (EF) is a popular background enrichment index used in geochemical studies for assessment of soil or sediment enrichment in elements (Dung et al 2013;Pourret et al 2016). However, its usefulness for interpretation of the abundance of elements showing strongly positive geochemical anomalies in the study area is debatable because all the calculated EF would indicate extremely high values.…”

Section: The Ph and Element Concentrations Of Soilsmentioning

confidence: 99%

“…The use of mean crustal element concentrations or average shale composition as proxies of natural element concentrations in soils affected by multiple small-scale geochemical anomalies is problematic because in this approach a local geologic setting and other environmental factors are not considered. However, many authors use the upper continental crust element concentration for soil quality assessment, especially in calculation of quantitative indices, such as enrichment factor, geoaccumulation index and pollution load index (Dung et al 2013;Barbieri 2016).…”

Section: Introductionmentioning

confidence: 99%

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Geochemical background of potentially toxic trace elements in reclaimed soils of the abandoned pyrite–uranium mine (south-central Poland)

Gałuszka

Migaszewski

Duczmal-Czernikiewicz

et al. 2016

Int. J. Environ. Sci. Technol.

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Spatial distribution patterns of As, Ba, Cd, Cr, Cu, Mn, Ni, Pb, U and Zn were determined in topsoil samples collected after 40 years of chemical remediation conducted in the inoperative ''Staszic'' pyrite-uranium mine in the Holy Cross Mountains, south-central Poland. Soil samples were taken from 58 sites using a systematic random sampling design. Selected samples were subjected to an X-ray diffractometry analysis on bulk soils and separated clay fractions. Hematite, goethite and gypsum are common mineral phases in soil samples. Technogenic soils developed on reclaimed mine spoils show uniform spatial element distribution patterns and additionally a distinct enrichment in As, Pb, Mn, U and Zn. Mineral and chemical composition of soils vs. rocks points to the lithogenic source of the determined elements. The results of chemical analysis have been used for evaluation of geochemical background of trace elements in the study area with the iterative 2r-technique. This investigation shows that using mean crustal element concentrations (Clarke values) as proxies of threshold values in soils are not useful for determination of strongly positive geochemical anomalies. A modified enrichment factor, i.e. a local enrichment factor, is proposed for identification of sites where soils are contaminated.

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Section: The Ph and Element Concentrations Of Soilsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Geochemical background of potentially toxic trace elements in reclaimed soils of the abandoned pyrite–uranium mine (south-central Poland)

Gałuszka

Migaszewski

Duczmal-Czernikiewicz

et al. 2016

Int. J. Environ. Sci. Technol.

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“…Geochemical background is called "natural" substances in environmental samples, taking into account the spatial and time factors. There are determined of direct methods to the samples with minimal anthropogenic influence, or indirectly by statistical methods [16]. High lead levels in the sediments of Lake Sunia could be attributed to agricultural production in the catchment and the resulting application of mineral fertilizers and pesticides.…”

Section: Resultsmentioning

confidence: 99%

Spatial Distribution Of Lead, Zinc And Chromium In The Bottom Deposits Of Lake Sunia

Sidoruk

Potasznik

2015

Ecological Chemistry and Engineering S

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Abstract:Various elements are accumulated in bottom deposits in concentrations that significantly exceed the levels observed in lake water. Under certain conditions, this can lead to secondary contamination of water, posing a threat to aquatic organisms. The aim of this study was to evaluate the spatial distribution of Pb, Zn and Cr pollutants in the bottom deposits of Lake Sunia. The investigated water body is situated in the Olsztyn Lakeland (western part of the Masurian Lakeland), approximately 30 km north of the city of Olsztyn, in the municipality of Swiatki. The lake has a total area of 111.6 ha and a maximum depth of 8.8 m. The inflow to and the outflow from lake are situated in its south-western and north-western part, respectively. The lake features a bay which is separated from the main water body by a shallow zone. Its catchment area comprises mainly agricultural land. The total area of supply of lake is 450 ha of which inflow catchment area is 70 ha. Most of the catchment area is agricultural land (91%), and in particular arable land, the rest of the area (5%) are the barren, and trees (4%). In the area of the lake is dominated by power-sandy loam soil in the passing sands and clay loam strong little sandy. In terms of particle size are a summary of the soil that is difficult permeable to water and nutrients. Taking into account the valuation of soil classification in the vast quantities of soil are included in the class IVa, IIIa and IIIb. The average content of organic matter in the lake was determined at 24%. Significant accumulation of organic matter results from intense inflow of biogenic substances from farmed areas in the catchment. The average concentrations of trace elements in the analyzed water body were arranged in the following series: Cr < Pb < Zn, and their ratios were determined at 8.1 < 22.9 < 45.2. Higher levels of heavy metals were observed in the profundal zone, whereas lower concentrations of the analyzed elements were noted in littoral zone sediments.Keywords: anthropogenic pressure, bottom deposits, heavy metals All water reservoirs have their bottom, which settle on the organic and inorganic suspensions. They form a bottom deposits characteristic for catchment and morphological feature [1]. The settlement of allochthonous material formed outside the sedimentation zone and autochthonous material created at the place of sedimentation leads to the formation of bottom sediments in water bodies [2]. The content of chemical compounds in sediments is determined by the type of bed rock forming lake catchments as well as land use patterns in the catchment area. Rock strata constitute a point of reference (geochemical background)

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“…These fine grained sediments entered the system through the São João, Bacaxá and Capivari Rivers, promoting silting of the dam especially in their mouths (Figure 3). According to Förstner and Wittmann (1983) and more recently Dung et al (2013), this grain size favors the accumulation of contaminants through surface chemical processes. The homogeneity shown in Figure 3 is probably a hydrodynamic response that is due to wind induced currents that should present very low velocities.…”

Section: Resultsmentioning

confidence: 99%

Mercury distribution in sediments of a shallow tropical reservoir in Brazil

Souza

Wasserman

2014

Geochim. Bras.

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ResumoO mercúrio é um elemento tóxico distribuído globalmente em áreas contaminadas e também em ambientes remotos. No caso do Lago de Juturnaíba (Estado do Rio de Janeiro, Sudeste do Brasil), parte da paisagem foi submergida após a construção de uma represa, favorecendo a geração de condições anóxicas e baixo potencial redox e modificando as características geoquímicas. O entendimento do comportamento dos poluentes em Juturnaíba é necessário, pois o sistema é utilizado para vários propósitos, inclusive captação de água para consumo humano, irrigação, lazer e pesca amadora. No presente estudo, a distribuição das concentrações de mercúrio foi avaliada em sedimentos de superfície do reservatório de Juturnaíba, a qual foi interpretada à luz da granulometria e de concentrações de nitrogênio e carbono. Trinta e duas amostras de sedimento de superfície foram coletadas em março de 2011 a fim de se determinar as concentrações de mercúrio por espectrofotometria de absorção atômica com acessório vapor frio (CV-AAS). O mapa de distribuição indica que os maiores valores de mercúrio (211 ng/g) são associados com a presença de bancos de macrófitas aquáticas. Os valores mais baixos (58 ng/g) foram observados na porção Norte, associados com os aportes do Rio São João que drena uma região mais bem preservada. Deve ser sublinhado que as maiores concentrações associadas à maior produção de macrófitas é exatamente onde é mais intenso o processo de metilação, constituindo uma ameaça às populações humanas e ao meio ambiente. Palavras-chave: reserva tropical, mercúrio total, contaminação ambiental, carbono orgânico total, nitrogênio total. Abstract Mercury is a toxic element that is globally distributed in contamina-

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From geochemical background determination to pollution assessment of heavy metals in sediments and soils

Cited by 261 publications

References 85 publications

Geochemical background of potentially toxic trace elements in reclaimed soils of the abandoned pyrite–uranium mine (south-central Poland)

Geochemical background of potentially toxic trace elements in reclaimed soils of the abandoned pyrite–uranium mine (south-central Poland)

Spatial Distribution Of Lead, Zinc And Chromium In The Bottom Deposits Of Lake Sunia

Mercury distribution in sediments of a shallow tropical reservoir in Brazil

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