Selective Chemical Extraction of Soil Components and Bound Metal Species

Pickering, W.F.; Shuman, L. M.

doi:10.1080/10408348108542747

Cited by 60 publications

(43 citation statements)

References 127 publications

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“…Os extratores ácidos deslocam cátions adsorvidos, dissolvem carbonatos e hidróxidos não perfeitamente cristalizados e provocam dissolução parcial de minerais de argila silicatados (Pickering, 1981). Já os extratores quelatantes atuam no deslocamento de Zn de sítios de troca por meio da formação de complexos solúveis, reduzindo a atividade de íons em solução (Norvell, 1991) e sem alterar, significativamente, o pH dos solos, evitando, dessa maneira, a solubilização de compostos de Zn.…”

Section: Introductionunclassified

Disponibilidade de zinco para milho pelos extratores Mehlich-1, Mehlich-3 e DPTA em solos de Minas Gerais, na presença e ausência de calagem

Menezes

Dias

Neves³

et al. 2010

Rev. Bras. Ciênc. Solo

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Section: Introductionunclassified

Disponibilidade de zinco para milho pelos extratores Mehlich-1, Mehlich-3 e DPTA em solos de Minas Gerais, na presença e ausência de calagem

Menezes

Dias

Neves³

et al. 2010

Rev. Bras. Ciênc. Solo

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“…Various single and sequential chemical extraction procedures provide information about the reactivity of different metal pools (Pickering, 1981). These aspects of dredged materials have been intensely studied (Förstner, 1989;Gambrell, 1994).…”

Section: Introductionmentioning

confidence: 99%

Leaching behaviour of Cd, Cu, Pb and Zn in surface soils derived from dredged sediments

Singh

Verloo

1999

Environmental Pollution

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Leaching of heavy metals from land disposed dredged sediment spoils is a potential environmental hazard. The leaching behavior of Cd, Cu, Pb and Zn in surface soils sampled from abandoned dredged sediment disposal sites was assessed. Using simple mass-balance calculations, the significance of the leaching test results with respect to metal migration into underlying clean soil was appraised. The potential leachability, defined as the amounts released at constant pH 4, decreased in the order (% of total contents): Zn (58 %) ≈ Cd (49 %) > Cu (5 %) ≈ Pb (2 %). The kinetics of metal release were determined in a cascade shaking test using demineralized water acidified to pH 4 (HNO 3 ). Metal concentrations in the leachates were low and metal migration was, assuming uniform convective flow, predicted to be of no environmental concern. It is emphasized that any long term prediction of metal migration is uncertain.

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“…The principle and limitations of this method have been described by, e.g., Jenne and Luoma [91], Luoma and Bryan [92], Pickering [93], and Kersten and Foerstner [94]. The methods aim at extraction of different species of radionuclides based on selective desorption of adsorbed or 'exchangeable' forms, or on selective dissolution of a solid phase containing the radionuclide.…”

Section: Methods For Direct Speciation Analysis In the Lithospherementioning

confidence: 99%

Speciation of Radionuclides in the Environment

Gunten

Beneš

1995

Radiochimica Acta

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Methods for the determination of the speciation of radionuclides in aerosols, in aquatic solutions, in sediments, soils and rocks are reviewed. At present, most of the results about speciation are deduced from model calculations, model experiments, and separation of species (forms) of radionuclides, e.g., by sequential extraction procedures. Methods of direct determination of speciation of radionuclides (e.g., by laser induced spectroscopy) are in general not yet sensitive enough for a measurement of the very low concentrations of radionuclides in the environment. The methodological part of this paper is followed by a review of the very abundant literature about speciation of important radionuclides in the environment, i.e., in the atmosphere, hydrosphere and lithosphère. The review does not include the biosphere. Literature up to spring 1993 is included (with a few more recent additions).

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Selective Chemical Extraction of Soil Components and Bound Metal Species

Cited by 60 publications

References 127 publications

Disponibilidade de zinco para milho pelos extratores Mehlich-1, Mehlich-3 e DPTA em solos de Minas Gerais, na presença e ausência de calagem

Disponibilidade de zinco para milho pelos extratores Mehlich-1, Mehlich-3 e DPTA em solos de Minas Gerais, na presença e ausência de calagem

Leaching behaviour of Cd, Cu, Pb and Zn in surface soils derived from dredged sediments

Speciation of Radionuclides in the Environment

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