Kinetics of Radionuclides and Heavy Metals Behaviour in Soils: Implications for Plant Growth

Igwe, J. C.; Nnorom, Innocent C.; Gbaruko, B. C.

doi:10.1002/chin.200705264

Cited by 23 publications

(29 citation statements)

References 2 publications

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“…Numerous investigations show that the distribution and bioavailability of radionuclides in nature are a function of their chemical fractionation in the soils (e.g. Schultz et al 1998;Rao et al 2008), which depends both upon their physicochemical forms and the soil characteristics (Igwe et al 2005). The long-term differences of the environmental conditions were found to cause redistribution of the radionuclides within the various soil fractions due to changes of the pH, the redox potential, destruction of the organic matter, leaching and ion-exchange (Koch-Steidl and Pröhl 2001).…”

Section: Introductionmentioning

confidence: 99%

Effects of freezing and soil drought on the geochemical fractionation of americium in Fluvisol and Cambisol soils from Bulgaria

Kovacheva¹,

Yovkova²,

Todorov³

et al. 2013

Central European Geology

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Extreme changes of environmental conditions can alter the soil properties and influence the migration ability and bioavailability of pollutants. Elucidation of the effects of the extreme weather conditions, such as sharp temperature change, drought and floods, on the fractionation of radionuclides in different soil types is especially important for adequate risk assessment after radioactive contamination. The effects of short-term and prolonged freezing and soil drought on the geochemical fractionation of americium in two soil types (Fluvisol and Cambisol, classified according to the World Reference Base for Soil Resources/FAO) from Bulgaria were studied. The changes of the physico-chemical forms of 241 Am after storage under different conditions were determined by the sequential extraction procedure and gamma-spectrometric measurements. The impact of the sharp temperature decrease and drought on the association of the radionuclide with the various soil phases was considered in terms of the soil characteristics. The results showed that the risk of increased mobility and bioavailability of americium in the loamy-sand soil with acidic pH and very low cation exchange capacity (CEC) exists under the examined extreme environmental conditions. The soil with sand-loam texture tended to immobilize americium after freeze and drought storage.

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Section: Introductionmentioning

confidence: 99%

Effects of freezing and soil drought on the geochemical fractionation of americium in Fluvisol and Cambisol soils from Bulgaria

Kovacheva¹,

Yovkova²,

Todorov³

et al. 2013

Central European Geology

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“…Soil pH is the most widely accepted parameter which exerts a controlling influence on the availability of micro-nutrients and heavy metals in the soil to plants (Sanders, 1982;Igwe et al, 2005). Banjoko and Sobulo, (1994) reported that some Nigerian soils especially in the forest and savannah regions are within a pH range of 5.70 -6.50.…”

Section: Resultsmentioning

confidence: 99%

Fractionation of lead-acid battery soil amended with Biochar

Anegbe¹,

Okuo²,

Ewekay³

et al. 2015

Bayero J. Pure App. Sci.

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Mobile (bio)available metal concentration in contaminated soils can be minimized through biological immobilization and stabilization methods using a range of organic compounds, such as "biochar." Biochar has a high surface area, highly porous, variable -charge organic material that has the potential to increase soil water holding capacity, surface sorption and base saturation when added to soil. The soil was characterized before and after amending by standard method. The parent soil used for this study was collected from lead-acid battery chargers' workshop. . There is a gradual decrease in the concentration of the heavy metals as the concentration of biochar increases from 5 -20%. Fractionation result shows that the heavy metals (Zn,Cr,Cd,Cu and Pb) were mainly associated with the residual fraction, the mobility factor for the heavy metals was calculated and found to be higher for all metals in the parent soil than the Biochar amended soil. Contamination levels were moderate for Cd and Cr, considerably for Pb, Cu and Zn. The results indicated that long term discharge of these battery chargers' wastes into the environment will cause accumulation of some toxic metals in soils which may lead to elevated levels of these metals in plants.

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“…Fine solid particles are also more tractable to migration in soil due to the biological activity of growing plant roots as well as of small organisms and animals living in soil [17]. As a result of the above processes, caesium can migrate carried by soil particles.…”

Section: Resultsmentioning

confidence: 99%

Parameters Affecting 137Cs Migration within Soil Profile

Sefien

Ibrahim

Abdelmalik

2018

Arab Journal of Nuclear Sciences and Applications

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Several studies have been carried out on the adsorption, distribution and migration of 137 Cs within soil profile in the vicinity of the Nuclear Research Center, Atomic Energy Authority, Egypt, in addition to Ismailia Canal areas. The soil physicochemical and mineralogical characteristics were carried out and indicated that the soil samples consist mainly of sand (quartz) and silt fractions. The kinetics of caesium adsorption and its related adsorption isotherms for the tested soils were also studied. The sorption of 137 Cs by soil minerals markedly affects its migration rate. The natural background of both locations under study indicated that the 137 Cs concentration in the reactor site were found to be 30.82 Bq/kg while that at the canal site was found to be 0.87 Bq/kg. 137 Cs in the reactor site may be originated from the fallout and from the external contamination which affected the background level. The vertical distribution and the migration rate of 137 Cs have been studied for the soil profiles in both locations. These rates were found to be 0.056 and 0.031 cm/year for the reactor and canal site respectively.

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Kinetics of Radionuclides and Heavy Metals Behaviour in Soils: Implications for Plant Growth

Abstract: ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.

Cited by 23 publications

References 2 publications

Effects of freezing and soil drought on the geochemical fractionation of americium in Fluvisol and Cambisol soils from Bulgaria

Effects of freezing and soil drought on the geochemical fractionation of americium in Fluvisol and Cambisol soils from Bulgaria

Fractionation of lead-acid battery soil amended with Biochar

Parameters Affecting 137Cs Migration within Soil Profile

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