Low molecular weight organic acids and their Al-complexes in soil solution—composition, distribution and seasonal variation in three podzolized soils

Hees, Patrick A.W. van; Lundström, Ulla; Giesler, Reiner

doi:10.1016/s0016-7061(98)00140-2

Cited by 202 publications

(88 citation statements)

References 40 publications

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“…The latter are mainly applied in drinking water purification process steps, such as water softening, decolourizing and pollutant removal. Ultrafiltration has, however, been used in many studies for the fractionation of trace elements associated with dissolved organic material, including fulvic and humic acids, and the study of colloidal-material-associated trace elements, both in soil extracts/solutions and in groundwater [20][21][22][23][24].…”

Section: Particle Size Fractionationmentioning

confidence: 99%

Fractionation and Speciation of Trace Elements in Soil Solution

Laing

2010

Trace Elements in Soils

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Section: Particle Size Fractionationmentioning

confidence: 99%

Fractionation and Speciation of Trace Elements in Soil Solution

Laing

2010

Trace Elements in Soils

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“…In soils, waters and sediments, humic substances represent the main part of dissolved organic matter and contain a large number of ionizable functional groups, mainly carboxyls, phenolics and alcoholic hydroxyls able to form stable binds with metal ions [36 -39]. Others authors [40,41] showed in soils that low molecular weight organic acids (< 500 Da), such as oxalic, citric, acetic, malic and formic acid can form strong complexes with metal ions and can be responsible for their transportation.…”

Section: Effect Of Time Sampling Points and Doc On Dom Characteristicsmentioning

confidence: 99%

Dissolved Cu(II) Speciation in Unpolluted Soil Solutions of a Planosolic Horizon

2008

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Dissolved Cu(II) speciation in unpolluted soil solutions from different horizons was studied using differential pulse anodic stripping voltammetry (DPASV). Three sites were selected according to topography and monitored for three years. Experiments evidence Cu(II) can be bound by DOM (Dissolved Organic Matter) through complexation and/or adsorption reactions. The complexation capacity and the corresponding conditional stability constant were determined for complexation reactions. The adsorbing sites were titrated. A potential binding coefficient was calculated to compare both types of reactions. Results show adsorption is less frequent than complexation but exhibits higher binding coefficient.

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“…There are many studies, though, concerning the stability of complexes with a low molecular weight [56,57]. However, they usually form a small part of total organic carbon dissolved in soil solutions.…”

Section: Aluminium Bound To Organic Mattermentioning

confidence: 99%

Composition and variability of soil solutions as a measure of human impact on protected woodland areas

Walna

2007

Open Chemistry

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Abstract:A study was made of the sandy and loamy soils of the woodland areas of the Wielkopolski National Park (Poland) affected by acid rain. The basic properties of the soils were determined, revealing their strong acidification, poor buffering power, and the possibility of aluminium release. An analysis was made of the content of soluble, exchangeable, organic, amorphous, and free forms of aluminium. The concentration of exchangeable aluminium exceeded that of the form dissolved in soil water several times to tens of times. In soil solutions Ca/Al ratios in some horizons show very low values that could induce a nutrient deficit. In the sandy profiles the ratio even drops below the critical level of 0.1. In the surface horizon the dominant cation at all the sites is the aluminium ion. An analysis of anions shows a dominance of sulphate and chloride ions. In autumn nitrites were recorded at all depth levels, while in spring only in the surface layers. The highest fluoride concentrations were found to occur in profiles situated the closest to the emission source of fluorine compounds. The markedly higher concentrations of ammonium than nitrate ions can lead to increased acidification and eutrophication of the soil.

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Low molecular weight organic acids and their Al-complexes in soil solution—composition, distribution and seasonal variation in three podzolized soils

Cited by 202 publications

References 40 publications

Fractionation and Speciation of Trace Elements in Soil Solution

Fractionation and Speciation of Trace Elements in Soil Solution

Dissolved Cu(II) Speciation in Unpolluted Soil Solutions of a Planosolic Horizon

Composition and variability of soil solutions as a measure of human impact on protected woodland areas

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