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Lithogenic thallium behavior in soils with different land use
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SYSNO ASEP 0336838 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Lithogenic thallium behavior in soils with different land use Tvůrce(i) Vaněk, A. (CZ)
Chrastný, V. (CZ)
Mihaljevič, M. (CZ)
Drahota, P. (CZ)
Grygar, Tomáš (UACH-T)
Komárek, M. (CZ)Zdroj.dok. Journal of Geochemical Exploration. - : Elsevier - ISSN 0375-6742
Roč. 102, č. 1 (2009), s. 7-12Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova thallium ; speciation ; Mn oxide Vědní obor RIV DD - Geochemie CEZ AV0Z40320502 - UACH-T (2005-2011) UT WOS 000266617000002 DOI 10.1016/j.gexplo.2008.10.004 Anotace 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. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2010
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