Kinetic extractions to assess mobilization of Zn, Pb, Cu, and Cd in a metal-contaminated soil: EDTA vs. citrate

Labanowski, Jérôme; Monna, Fabrice; Bermond, Alain; Cambier, Philippe; Fernandez, C.; Lamy, Isabelle; Oort, Folkert van

doi:10.1016/j.envpol.2007.06.054

Cited by 134 publications

(79 citation statements)

References 30 publications

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“…Kinetic extractions were performed using a solution of EDTA at 0.05 mol·L −1 with 13 contact times ranging from 15 min to 24 h and a L:S ratio of 10:1. EDTA is used as extractant because it is non-specific (only cations) and can therefore mobilise a large number of elements; it is also capable of extracting metal bound to organic matter, carbonate and Fe and Mn oxides providing good long-term prediction of metal bioaccessibility from these different sediment phases (Gismera et al (2004); Labanowski et al (2008)). Three replicate extractions of each extraction procedure were undertaken.…”

Section: Geochemical Analysis and Extraction Of The Raw And Treated Smentioning

confidence: 99%

Trace element mobility in a polluted marine sediment after stabilisation with hydraulic binders

Saussaye

Hamdoun

Leleyter

et al. 2016

Marine Pollution Bulletin

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The management of dredged marine sediment is an issue for many harbours, particularly when contaminant concentrations prevent disposal at sea. The stabilisation/solidification of the sediments with hydraulic binders for a use in road subgrade layer is a potential alternative solution. However, the environmental acceptability is not yet fully established. This paper presents the results of a case study to comprehensively determine the stabilisation of As, Cd, Cr, Cu, Ni, Pb and Zn. After demonstrating that stabilisation/solidification affects the microstructure of the sediment, a mobility study is realised (single, sequential and kinetic extractions). According to the regulatory/ technical guidelines the studied elements do not pose a risk to the environment. However, results from more complex mobility studies reveal that stabilisation in the short term is only effective for Ni while other elements are mobilised after treatment by at least one type of extraction. Stabilisation in the long term is not universally effective.

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Section: Geochemical Analysis and Extraction Of The Raw And Treated Smentioning

confidence: 99%

Trace element mobility in a polluted marine sediment after stabilisation with hydraulic binders

Saussaye

Hamdoun

Leleyter

et al. 2016

Marine Pollution Bulletin

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“…The supernatant was filtered and analysed by inductively-coupled plasma optical emission spectroscopy (ICP-OES; Varian Vista MPX). This method is known to extract the 'labile' and 'less labile' pools of trace elements (Fangueiro et al 2005;Labanowski et al 2008), i.e. the mineral fraction potentially available to plants via root absorption.…”

Section: Plant and Soil Materialsmentioning

confidence: 99%

Metal concentration and metal mass of metallicolous, non metallicolous and serpentine Noccaea caerulescens populations, cultivated in different growth media

et al. 2013

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Aims Evaluate the genetic and environmental variability of metal concentration and metal mass of Noccaea caerulescens, from metalliferous (MET), non metalliferous (NMET) and serpentine (SERP) soils. Methods 18 populations were cultivated in 18 different growth conditions, such as a soil mine tailing, soils amended with zinc (Zn), cadmium (Cd) and nickel (Ni) salts (in mixtures or in monometallic salts) and a hydroponic solution with two Zn concentrations. Results MET populations had Zn concentrations lower than NMET and SERP in the different soils but higher Cd mass (the product of aerial biomass and foliar metal concentration). SERP had the highest Ni concentration and Ni mass values. The addition of Cd or Ni to a Zn-contaminated soil significantly decreases Zn concentration. In hydroponics, MET and NMET had equivalent Zn concentrations but these were three times higher than those obtained in soil experiments. Zn mass of NMET was significantly lower than MET with the latter having Zn mass values largely above those obtained in mine soil. Conclusions Results showed a large heterogeneity of responses among populations depending on the substrate used, and it was not possible to correctly assign a single population to its accurate origin with only one experiment. Finally, data on metal concentration obtained in culture soils are closer to those in field soils than those from hydroponics so that they could give a more accurate information on the accumulating capacity of Noccaea caerulescens and its use in phytoextraction of metals in field conditions.

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“…Several authors have hypothesized that the application of models with metals extraction data might better reflect behaviors of metals in soils [1][2][3][4][5]. For a given chemical extractant, the extraction method generates two kinds of data: (i) with respect to the total metals content, the proportion of extractable metals in the soil sample; and (ii) the dynamics of metals [6]. In view of the effectiveness in removing a wide range of heavy metals, chelating or acidic agents are widely applied as extractants [7].…”

Section: Introductionmentioning

confidence: 99%

Change of the Extractability of Cadmium Added to Different Soils: Aging Effect and Modeling

et al. 2018

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Ethylenediaminetetraacetic acid (EDTA) is known to be a chelating agent and has been widely used for estimating the total extractable metals in soil. The effect of aging on EDTA-extractable cadmium (Cd) was investigated in five different soils at three Cd concentrations incubated for 180 days. The EDTA-extractable Cd rapidly decreased after incubated during 30-60 days, followed by slow processes, and for 90 days the EDTA-extractable Cd tended to be stable. The decrease in EDTA-extractable Cd may be due to precipitation/nucleation processes, diffusion of Cd into the micropores/mesopores, and occlusion within organic matter in soils. A semi-mechanistic model to predict the extractability of Cd during incubation, based on processes of Cd precipitation/nucleation, diffusion, and occlusion within organic matter, was developed and calibrated. The results showed that the processes of micropore/mesopore diffusion were predominant processes affecting the extractability of Cd added to soils, and were slow. However, the proportions of the processes of precipitation/nucleation and occlusion within organic matter to the non-EDTA-extractable Cd added to soils were only 0.03-21.0% and 0.41-6.95%, respectively. The measured EDTA-extractable Cd from incubated soils were in good agreement with those predicted by the semi-mechanistic model (R 2 = 0.829). The results also indicated that soil pH, organic matter, and incubation time were the most important factors affecting Cd aging.

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Kinetic extractions to assess mobilization of Zn, Pb, Cu, and Cd in a metal-contaminated soil: EDTA vs. citrate

Cited by 134 publications

References 30 publications

Trace element mobility in a polluted marine sediment after stabilisation with hydraulic binders

Trace element mobility in a polluted marine sediment after stabilisation with hydraulic binders

Metal concentration and metal mass of metallicolous, non metallicolous and serpentine Noccaea caerulescens populations, cultivated in different growth media

Change of the Extractability of Cadmium Added to Different Soils: Aging Effect and Modeling

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