Comparison of water-soluble and exchangeable forms of Al in acid forest soils

Drábek, Ondřej; Mládková, Lenka; Borůvka, Luboš; Száková, Jiřina; Nikodem, Antonín; Němeček, Karel

doi:10.1016/j.jinorgbio.2005.06.024

Cited by 74 publications

(51 citation statements)

References 61 publications

(82 reference statements)

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“…Although Al 13 (Al 3+ ) is the most toxic, or most damaging, species to plant root systems it is not usually present in high numbers in soils (Drabeck et al, 2005), as was revealed by our study. Even under the natural conditions of acidic soils where, in solution, low to moderate concentrations of Al 3+ of the complexes formed can be observed between aluminum and fluoride (Al-F) and aluminum and dissolved organic carbon (Al-DOC) still prevails as the most commonly found aluminum species (Merino et al, 1998).…”

Section: S CM -------------------------------------------------------supporting

confidence: 64%

“…According to Drabeck et al (2005), the toxicity threat to the plant decreases in the following order: Al 13 polymers (except for phosphates and silicates), Al (Table 3). Overall, this species was found with more frequency in the deepest two layers, (the major part in the 40-60 cm layer) where the performance of OM and correctives is generally poor.…”

Section: S CM -------------------------------------------------------mentioning

confidence: 99%

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Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol

Antonângelo

Neto

Crusciol

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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Section: S CM -------------------------------------------------------supporting

confidence: 64%

Section: S CM -------------------------------------------------------mentioning

confidence: 99%

Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol

Antonângelo

Neto

Crusciol

et al. 2017

Sci. agric. (Piracicaba, Braz.)

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“…Down to the 0.1 -0.2 m depth, there was a positive (P < 0.05) correlation between the exchangeable and soluble content values of calcium and magnesium (data not shown), confirming the equilibrium between these two phases, as well as the sensitivity of the water extract in reflecting changes in the exchangeable content of these nutrients in the soil. The correlation between calcium and magnesium in solu- + , considering that the toxicity of this last species is not always accepted (Drabeck et al, 2005). The Al species bonded with fluoride and organic compounds, Al(OH) 3 , are considered nontoxic.…”

Section: Resultsmentioning

confidence: 99%

“…The Al species bonded with fluoride and organic compounds, Al(OH) 3 , are considered nontoxic. Although Al 13 is the most toxic species, it is not commonly present in soils (Drabeck et al, 2005). The free form Al 3+ is, therefore, the most harmful to plant roots.…”

Section: Resultsmentioning

confidence: 99%

“…The soil chemical analyses performed before the beginning of the experiment, following the methodology described by Pavan et al (1992), indicated the following results, for the 0 -0.2 and 0.2 -0.4 m soil layers, respectively: pH CaCl 2 of 4.6 and 4.2; organic matter (OM) content of 31 and 21 g dm -3 ; P (Mehlich-1) of 0.3 and 0.1 mg dm -3 ; K + of 3.6 and 2.2; Ca 2+ of 25 and 7; Mg 2+ of 20 and 8; Al 3+ of 3 and 8; H + Al of 77.6 and 97.0 mmol c dm -3 ; base saturation (V) of 38 and 15%; aluminum saturation (m) of 6 and 32%. The soil textural composition, determined according to Embrapa (1997) methodology for these same soil layers, was 290 and 300 g kg -1 sand; 130 and 100 g kg -1…”

Section: Methodsmentioning

confidence: 99%

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Liming and Ionic speciation of an Oxisol under no-till system

Zambrosi

Alleoni²,

Caires³

2008

Sci. agric. (Piracicaba, Braz.)

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The chemical speciation of the soil solution is an important tool for evaluating nutrient availability and aluminum phytotoxicity. The effect of liming in the composition of the soil solution under the no-till (NT) system is still not well known. We evaluated the chemical speciation of Al and nutrients in the soil solution (water extract 1:1), five years after liming at the moment of the establishment of NT in a native pasture, in Ponta Grossa, Paraná State, Brazil. Dolomitic lime was applied at a rate of 4.5 t ha -1 (either incorporated or surface-applied), or split in three annual rates of 1.5 t ha CALAGEM E ESPECIAÇÃO IÔNICA DE UM LATOSSOLO SOB SISTEMA PLANTIO DIRETORESUMO: A especiação química da solução do solo é uma importante ferramenta para avaliar a disponibilidade de nutrientes e o potencial fitotóxico do alumínio. As formas em que os elementos ocorrem na solução dos solos sob sistema plantio direto (SPD) ainda são pouco conhecidas, sobretudo em áreas que receberam aplicação de calcário. Avaliou-se a distribuição das espécies químicas de alumínio e nutrientes na solução do solo (extrato aquoso 1:1), cinco anos após a aplicação de calcário, na introdução do SPD em área de pastagem nativa, em Ponta Grossa -PR. Aplicaram-se 4,5 t ha -1 de calcário dolomítico na superfície, em dose única ou parcelada durante três anos, ou com incorporação na camada de 0 -0,20 m, de um Latossolo Vermelho distrófico textura argilosa. As amostras de solo foram coletadas nas profundidades de 0 -0,05; 0,05 -0,1; 0,1 -0,2; 0,2 -0,4; 0,4 -0,6 e 0,6 -0,8 m. O alumínio (Al) ocorreu predominantemente complexado pelo carbono orgânico dissolvido (DOC) e pelo fluoreto, e em baixíssimas proporções na forma livre Al 3+ , mesmo em condições de alta acidez. Para cálcio (Ca) e magnésio (Mg), as espécies químicas que ocorreram em maiores proporções foram as formas livres (Ca 2+ e Mg 2+ ) e complexadas pelo DOC. O fósforo, além das formas livres (H 2 PO 4 -, HPO 4 2-), interagiu com alumínio (par iônico Al-H x PO 4 x ), sobretudo até 0,1 m de profundidade. A complexação do alumínio pelo carbono orgânico dissolvido não foi influenciada pela correção da acidez do solo por meio da calagem na superfície ou com incorporação. A aplicação de calcário não alterou a especiação de cálcio e magnésio na solução do solo sob sistema plantio direto. Contudo, a ocorrência das formas livres H 2 PO 4 -e HPO 4 2-foi influenciada pela calagem, havendo incremento das formas associadas com cátions. Palavras-chave: calcário dolomítico, complexos, par iônico, carbono orgânico dissolvido

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Evaluation of Bioavailability and Partitioning of Aluminum in Sediment Samples of Different Ecosystems by Modified Sequential Extraction Methods

Khan

Kazi

Arain

et al. 2013

CLEAN Soil Air Water

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Sequential extraction procedures are widely used to characterize the different operational fractions with different potential toxicity of metals in environmental solid samples. The present work describes the application of different analytical approaches for sequential extraction of aluminum to evaluate its mobility, availability, and persistent chemical forms in sediment samples of different fresh water ecosystems (lake, canal, and river). The conventional BCR three‐stage sequential extraction procedure (C‐BCR) was modified at each stage, by applying ultrasonic device (U‐BCR), in order to shorten the required shaking time of 16 h for each three steps (excluding the hydrogen peroxide digestion in step 3, which was not performed with ultrasonic bath), could be completed in 40, 50, and 45 min, respectively. The aluminum in all extracts were determination by atomic absorption spectrometry using nitrous oxide – acetylene flame. The accuracy of results obtained from C‐BCR and proposed U‐BCR was verified with literature reported values of certified sediment sample (BCR 701). The overall recoveries of aluminum obtained by proposed U‐BCR were found in the range of 96.7–113% of those values obtained with C‐BCR for all fractions. Use of ultrasonic device, provided a large saving in extraction time relative to conventional shaking. It was observed that major part of Al in real sediment samples (80–83% of total Al) were bound to residual fraction. The acid soluble fraction of aluminum extracted by 0.11 mol/L CH3COOH has good correlation with aluminum content in corresponding water samples of each ecosystem.

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Comparison of water-soluble and exchangeable forms of Al in acid forest soils

Cited by 74 publications

References 61 publications

Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol

Lime and calcium-magnesium silicate in the ionic speciation of an Oxisol

Liming and Ionic speciation of an Oxisol under no-till system

Evaluation of Bioavailability and Partitioning of Aluminum in Sediment Samples of Different Ecosystems by Modified Sequential Extraction Methods

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