Use of BCR sequential extraction procedures for soils and plant metal transfer predictions in contaminated mine tailings in Sardinia

Ondoño, Emilia Fernández; Bacchetta, Gianluigi; Lallena, A. M.; Reyes, Francisco Bruno Navarro; Ortíz, I.; Jiménez, M.N.

doi:10.1016/j.gexplo.2016.09.013

Cited by 97 publications

(30 citation statements)

References 35 publications

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“…However, they do not relate to the mobility and availability of metals that ultimately determine the ecological risk they pose. Even though sequential chemical extractions of heavy metals do not directly indicate the speciation of metals in soils and sediments, precious data can be obtained about their mobility and bioavailability (Pueyo et al 2008;Fernández-Ondoño et al 2017). Figure 5 displays the results of the sequential extractions of heavy metals in the studied oxbow sediments.…”

Section: Mobility Of Sediment-bound Heavy Metals In Oxbows Of the Lowmentioning

confidence: 99%

Assessing the impacts of the main river and anthropogenic use on the degree of metal contamination of oxbow lake sediments (Tisza River Valley, Hungary)

et al. 2019

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Purpose Oxbow lakes, reaches that were cut off from a river during river straightening works, can accumulate during flooding metal-rich suspended sediments transported by a river from mining-impacted source areas and other anthropogenic sources. Additionally, the anthropogenic use of oxbow lakes may significantly impact the sediment-bound metal concentrations. The aim was to determine the dominating effect in the sediments' enrichment in heavy metals. Materials and methods We collected surface sediments (< 10-cm depth) from seven oxbow lakes once connected to the Tisza River (a transboundary river in Central and Eastern Europe). Four of the oxbows were located on the active floodplain, while three oxbows were at the reclaimed side (i.e., outside the flood defense levee). The sediment samples were subjected to total metal analyses (Cd, Co, Cr, Cu, Ni, Pb, and Zn) and sequential chemical extractions. Results and discussion Contamination indices (geoaccumulation index (Igeo) and pollution load index (PLI)) show a moderate but significant metal pollution of oxbow lakes situated on the active floodplain (I geo (Pb) 0.95-1.25, PLI 2.1-2.8) and an overall unpolluted to slightly polluted status of those at the reclaimed side (I geo (Pb) − 0.36-0.51, PLI 1.3-1.7). Additionally, the geochemical fractionation of the target metals showed that Cd and Zn were the most labile (Cd 29-48%, Zn 18-37% of nonresidual proportions), indicating their environmental significance. Conclusions Canonical discriminant analysis of the sediment-bound metal concentrations revealed the prevalent role of the river connection over the anthropogenic use in controlling the metal enrichment of oxbow sediments.

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Section: Mobility Of Sediment-bound Heavy Metals In Oxbows Of the Lowmentioning

confidence: 99%

Assessing the impacts of the main river and anthropogenic use on the degree of metal contamination of oxbow lake sediments (Tisza River Valley, Hungary)

et al. 2019

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“…Heavy metals accumulate in different geochemical fractions (organic-associated, exchangable, carbonateassociated, Fe, Mn oxide-associated and phyllosilicate minerals) in soils or sediments. In the soil or sediment, the bioavailable concentrations of trace elements are analyzed by using sequential extraction procedures that are commonly used to examine the mobility of trace elements in the soil [11,[14][15][16][17]. In the soil analyzed by this method; information on total concentrations, mobility and toxicity of heavy metals can be obtained.…”

Section: Introductionmentioning

confidence: 99%

Risk Assessment and Chemical Fractionation of Heavy Metals by BCR Sequential Extraction in Soil of the Sapanca Lake Basin, Turkey

Ateş¹,

Demirel²,

Mergul³

2020

Pol. J. Environ. Stud.

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Sapanca Lake is an important drinking water source located by D-100 highway in the north and E-80 (TEM Anatolian Highway) and a railway line in the south. Heavy metal concentrations in roadside soils result from vehicle exhausts and the corroding metal parts of vehicles. Due to the difficulty of removing heavy metals from the soil, a significant pollution problem arises and this pollution also affects the water resources by means of rain. Although there are several industries, the highway located near the lake is the most important pollutant source for Sapanca Basin. Therefore, this study evaluated heavy metal concentrations, the chemical fractions of the metals and ecological risks (by using C f , RAC and PERI) in the soil samples collected seasonally between 2015 and 2017 in Sapanca Lake Basin. Al and Fe were determined at very high amounts in all stations and the relationship between mean concentrations of other metals was determined to be Zn>Ba>As>Ni>Cr>Pb>Cu>Co>Cd. However, Zn, Ba, As, Ni, Cr, Pb, Cu, Co and Cd mean concentrations were determined as 87.63 mg/kg, Ba 86.87 mg/kg, 80.40 mg/kg, 58.62 mg/kg, 50.42 mg/kg, 41.90 mg/kg, 38.16 mg/kg, 13.98 mg/kg, 2.89 mg/kg respectively. Al, Fe, Co, Cr, Cu, Ni and Zn are mainly found in residual fractions in soil. According to the environmental risk assessment on the basis of soil stations, the 7 th station has the highest GC f value, which means that the soil sample presents the highest environmental risk according to the contamination factors. On the other hand, Cd has serious potential ecological risk and As has considerable potential ecological risk in all stations.

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“…The residual fraction (R) contains the metals with the strongest association with the crystalline structures of the minerals, which are therefore the most difficult to separate from the sediments. 16,19,20,24 Figure 3 and Table 4S show the results of the fractionation of arsenic and trace elements. In general, the chemical elements in the four fractionated sediments have similar behavior.…”

Section: Fractionation Of As and Trace Metalsmentioning

confidence: 99%

“…The results can be used to predict the mobility and potential bioavailability of the metals. [16][17][18][19] The advantage of the sequential extractions is the provision of detailed information about the origins, modes of occurrence, physicochemical and biological availability, mobilization and transport of trace metals. [20][21][22][23][24][25] The technique uses reagents to carry out successive leaching of specific geochemical fractions and several different protocols are proposed in the literature.…”

Section: Introductionmentioning

confidence: 99%

Arsenic and Trace Metals in Water and Sediment of the Velhas River, Southeastern Iron Quadrangle Region, Minas Gerais, Brazil

Silva¹,

Bellato²,

Neto³

et al. 2018

Quim. Nova

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River provides the public water supply for much of this region. The gold and iron mining activities in the Velhas River yield considerable amounts of suspended solids as well as metals to the hydrological system of the region. Thus, the present study sought to evaluate the concentrations of arsenic and trace metals in the waters and their distribution and mobility in sediment by BCR sequential extraction. Arsenic concentrations in the water samples were between 78.1 and 85.3 μg L-1 , which exceeded 10 μg L-1 (maximum limit permitted by Brazilian environmental regulations for water destined to human consumption, CONAMA Resolution 357/2005). The sequential extraction of the sediment showed considerable amounts of As (20%), Cd (55%), Co (56%), Cr (16%), Cu (23%), Ni (29%), Pb (47%) and Zn (71%) associated with the geochemical fractions considered potentially available for the remobilization to the aquatic environment. The presence of the elements in these fractions indicated high ecotoxicological risk and potential harm to the health of the local population.

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Use of BCR sequential extraction procedures for soils and plant metal transfer predictions in contaminated mine tailings in Sardinia

Cited by 97 publications

References 35 publications

Assessing the impacts of the main river and anthropogenic use on the degree of metal contamination of oxbow lake sediments (Tisza River Valley, Hungary)

Assessing the impacts of the main river and anthropogenic use on the degree of metal contamination of oxbow lake sediments (Tisza River Valley, Hungary)

Risk Assessment and Chemical Fractionation of Heavy Metals by BCR Sequential Extraction in Soil of the Sapanca Lake Basin, Turkey

Arsenic and Trace Metals in Water and Sediment of the Velhas River, Southeastern Iron Quadrangle Region, Minas Gerais, Brazil

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