Mobility and Bioavailability of Trace Elements in Soils

Podlesakova, E.; Němeček, Jan; Vácha, Radim

doi:10.1201/9781420032734.ch2

Cited by 34 publications

(36 citation statements)

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“…At present, the CaCl 2 extractable pool proved to give a better indication of the actual element availability for plant uptake than concentrations obtained with other extraction reagents [37,22,44], whereas EDTA showed good extractive effi ciency, with classic complexation reaction of different heavy metal cations and released heavy metals from soil exchangeable and organically complexed 'pools' [41,47]. It also had an infl uence on heavy metals bound in iron carbonates and hydroxides [6].…”

Section: Introductionmentioning

confidence: 99%

Physico-Chemical Parameters Determining the Variability of Actually and Potentially Available Fractions of Heavy Metals in Fluvial Sediments of the Middle Odra River

Ibragimow¹,

Walna²,

Siepak³

2013

Archives of Environmental Protection

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Abstract:The occurrence of heavy metals (Cd, Cr, Cu, Ni, Pb, Zn) has been determined in the fl uvial sediment samples collected along three transects in the Middle Odra River (western Poland) with a width of 360 m. The total concentrations of the metals were obtained after HNO 3 microwave digestion and the available fractions of heavy metals were determined by single extraction procedures using two extractants: 0.01M CaCl 2 and 0.05M EDTA. The measurement of physico-chemical parameters was also performed. The determination of total and available fractions of heavy metals, except potential available fractions of Cr, revealed high concentrations of studied elements detected in the sediment samples characterized by high content of coarse and very coarse-grained sand fraction and high content of organic matter. It was found that the concentrations of total and available fractions of metals could increase along with the content of organic matter, Eh values and concentrations of H + . Apart from the above, those concentrations become the lowest, the higher the content of medium grain size fractions is. Furthermore, the amounts of CaCl 2 and EDTA extractable metals increase in the sediments samples characterized by the lowest total and available concentrations of heavy metals.

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Section: Introductionmentioning

confidence: 99%

Physico-Chemical Parameters Determining the Variability of Actually and Potentially Available Fractions of Heavy Metals in Fluvial Sediments of the Middle Odra River

Ibragimow¹,

Walna²,

Siepak³

2013

Archives of Environmental Protection

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“…The extracted amounts of all studied metals with CaCl 2 and Na-acetate were not correlated with the total content in the sediment samples. Pendias and Pendias, 1984;Podlesakova et al, 2001). It also extracted the metals associated with carbonates and hydroxides of iron and manganese (Beckett, 1989).…”

Section: Resultsmentioning

confidence: 99%

“…For the extraction of Cu the solution of Na-acetate is more suitable, because of more complexing power of acetate ion and its ability to prevent deposition or readsorption of the released metal ions (Podlesakova et al, 2001). This reagent, other than Cu extracts also large amounts of Zn and V compared with CaCl 2 and NH 4 Cl.…”

Section: Resultsmentioning

confidence: 99%

Mobility and Bioavailability of Metals in sediments of Skadar Lake - Montenegro

Kastratović

Đurović

Krivokapić

et al. 2013

E3S Web of Conferences

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Abstract. Metals in sediments are present in different chemical forms, which mostly affect their ability to transfer in water and plants i.e. their bioavailability. The mobile part of metals is potentially toxic, thus for the evaluation of the bioavailability it is often enough to determine the metal content in the available and potentially available fraction of sediment. The aim of this study was to compare some methods of determination of mobile forms of heavy metals and to determine their share related to the "pseudo-total" metal content in the sediment from Skadar Lake, Montenegro. Mobile forms of Cu, Co, Cr, Mn, Ni, Pb, Zn, Sr and V were determined using: 0.1M NH 4 Cl (buffered to pH 9), 0.1M CaCl 2 (pH 6), 0.1M CH 3 COONa (pH 9), 0.1M H 2 C 2 O 4 (pH 2) and 0.1M EDTA (pH 6),. The largest amounts of Co (42.2 wt.%), Cr (11.4%) , Mn (59.9%), Ni (13.5%), Zn (41.0%) and V (42.2%) were extracted with oxalic acid and Cu (44.7 wt.%), Pb (49.3%), and Sr (61.2%) with EDTA. With NH 4 Cl, CaCl 2 and CH 3 COONa small amounts of metals were extracted (except Sr), generally below 1%. Based on these results we can conclude that the metals in the sediments of Lake Skadar are found in a negligible amount in easily mobile, acid soluble and carbonate-related phase.

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“…But at the distance of 350 m from roadside we still found elevated Pb and Cu concentrations in upper horizons of the soil profile. It could be due to more distant air transfer of finer particles, long-range transboundary transport of pollutants from Western Europe, also due to greater affinity of Pb and Cu to soil constituents and possibility to accumulate in the topsoil (Podlesakova et al, 2001;Brannvall, Spakauskas, 2007).…”

Section: Methodsmentioning

confidence: 99%

Heavy metal sorption capacity and mobility in the Retisol profile in relation to the contamination

Motuzas

Vaisvalavičius

Sabiene

2016

Zemdirbyste-Agriculture

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The aim of the research was to evaluate heavy metal contamination, heavy metal sorption capacity and their mobility in the monoliths of the relatively natural and technogenically affected by vehicle emissions Retisol profile. Two objects of the Eutric Albic Stagnic Bathygleyic Glossic Retisol were investigated: 1 st -relatively natural (350 m from motorway) and 2 nd -technogenically affected 20 m from motorway). Total heavy metal amounts in each horizon of the soil profile were determined by flame atomic absorption spectrometry method in the digestate of the HF + HNO 3 + HCl, and mobile heavy metal amounts -in the extract of 1 M CH 3 COONH 4 (pH 4.8). In the relatively natural soil, elevated Pb amounts were observed at the topsoil to 10 cm, and Cu -at the depth to 60 cm while Zn contamination was not observed. While heavy metal contamination of the technogenically affected Retisol was observed throughout the soil profile to one meter. Percentage of the mobile Pb from total amount in the natural and technogenically affected soil was 11.1-19.6% and 16.7-19.3%, Cu -13.0-16.7% and 16.1-19.5%, Zn -18.3-22.5% and 16.4-21.0%, respectively. Special stands of the model columns (1 m height, 0.15 m diameter) were designed and filled up with undisturbed soil monoliths. Heavy metal sorption capacity and mobility both in the soil profile and each horizon were investigated when saturating them with mixture of Pb, Zn and Cu solutions. Heavy metal sorption capacity in the horizons of the Retisol profile varied in the range of 504.40-819.60 mg kg -1 for Pb, 498.27-905.63 mg kg -1 for Cu and 505.07-983.43 mg kg -1 for Zn as well as enrichment factor -27.4-70.8, 36.0-59.5 and 17.5-53.2, respectively. Percentage of the mobile Pb, Cu and Zn in the saturated natural and technogenically affected soil was 40.6-48.2, 40.4-45.7 and 40.7-48.9 %, respectively. Consequently, despite the great heavy metal sorption capacity, their mobility and potential bioavailability increase markedly in the contaminated Retisol, therefore it is important in the legislations of the food safety and agricultural land protection to strengthen measures of the environmental protection at roadsides, such as sanitary zones of at least 20 m.

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Mobility and Bioavailability of Trace Elements in Soils

Cited by 34 publications

References 4 publications

Physico-Chemical Parameters Determining the Variability of Actually and Potentially Available Fractions of Heavy Metals in Fluvial Sediments of the Middle Odra River

Physico-Chemical Parameters Determining the Variability of Actually and Potentially Available Fractions of Heavy Metals in Fluvial Sediments of the Middle Odra River

Mobility and Bioavailability of Metals in sediments of Skadar Lake - Montenegro

Heavy metal sorption capacity and mobility in the Retisol profile in relation to the contamination

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