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Lithogenic thallium behavior in soils with different land use
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SYSNO ASEP 0336838 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Lithogenic thallium behavior in soils with different land use Author(s) Vaněk, A. (CZ)
Chrastný, V. (CZ)
Mihaljevič, M. (CZ)
Drahota, P. (CZ)
Grygar, Tomáš (UACH-T)
Komárek, M. (CZ)Source Title Journal of Geochemical Exploration. - : Elsevier - ISSN 0375-6742
Roč. 102, č. 1 (2009), s. 7-12Number of pages 6 s. Language eng - English Country NL - Netherlands Keywords thallium ; speciation ; Mn oxide Subject RIV DD - Geochemistry CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000266617000002 DOI 10.1016/j.gexplo.2008.10.004 Annotation In order to evaluate the effect of different land use on lithogenic Tl geochemistry, two forest and grassland soils developed on an identical Tl-rich substrate were examined. The modified BCR sequential extraction combined with X-ray diffraction analysis (XRD) and voltammetry of microparticles (VMP) were performed for a detailed insight on lithogenic Tl speciation and availability in both contrasting soils. It was revealed that soil forming processes like bioturbation and probably dust deposition may influence the increased input of lithogenic Tl into the forest floor. Thallium was predominantly bound within the residual fraction (up to 95%) corresponding to primary silicates (mainly orthoclase and muscovite) and probably secondary illite. The highest portion (~ 5%) of “labile” Tl was found in the organic horizons of the forest soil. Thallium adsorption was dominated by an identified non-crystalline Mn(III,IV) oxide proving thus its strong affinity for Mn oxides in mineral soils. Workplace Institute of Inorganic Chemistry Contact Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Year of Publishing 2010
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