Effect of low-molecular-weight organic acids on the leaching of thallium and accompanying cations from soil - A model rhizosphere solution approach

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F12%3A10127748" target="_blank" >RIV/00216208:11310/12:10127748 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41330/12:54512 RIV/60460709:41210/12:54512

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.gexplo.2011.08.010" target="_blank" >http://dx.doi.org/10.1016/j.gexplo.2011.08.010</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.gexplo.2011.08.010" target="_blank" >10.1016/j.gexplo.2011.08.010</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of low-molecular-weight organic acids on the leaching of thallium and accompanying cations from soil - A model rhizosphere solution approach

Popis výsledku v původním jazyce

The kinetic batch leaching of Tl-bearing mineral soil in 500 AM solutions of citric, oxalic and acetic acid was performed to simulate the release of Tl and main cations (Al, Fe, Si, K, Ca, Mn) in the rhizosphere-like environment. The obtained data demonstrate that low-molecular-weight organic acids (LMWOAs) significantly contribute to soil alteration accompanied by the release of lithogenic Tl (if present). The highest mobilization rates for Tl were observed after 0.5 h of leaching (with maximal valuesobtained for oxalate) followed by a substantial decrease. Thallium extractability in the organic acid solutions was up to 2.8-fold higher compared to water. Based on the experimental and speciation modeling data, Tl release is mainly pH-driven and can beattributed to acid ion exchange and/or acid leaching, as the formation of Tl-LMWOA complexes is negligible. The main Tl solubility-controlling phases predicted include illite and the identified Mn(III,IV) oxide due to their ability to ef

Název v anglickém jazyce

Effect of low-molecular-weight organic acids on the leaching of thallium and accompanying cations from soil - A model rhizosphere solution approach

Popis výsledku anglicky

The kinetic batch leaching of Tl-bearing mineral soil in 500 AM solutions of citric, oxalic and acetic acid was performed to simulate the release of Tl and main cations (Al, Fe, Si, K, Ca, Mn) in the rhizosphere-like environment. The obtained data demonstrate that low-molecular-weight organic acids (LMWOAs) significantly contribute to soil alteration accompanied by the release of lithogenic Tl (if present). The highest mobilization rates for Tl were observed after 0.5 h of leaching (with maximal valuesobtained for oxalate) followed by a substantial decrease. Thallium extractability in the organic acid solutions was up to 2.8-fold higher compared to water. Based on the experimental and speciation modeling data, Tl release is mainly pH-driven and can beattributed to acid ion exchange and/or acid leaching, as the formation of Tl-LMWOA complexes is negligible. The main Tl solubility-controlling phases predicted include illite and the identified Mn(III,IV) oxide due to their ability to ef

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

DD - Geochemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Geochemical Exploration

ISSN

0375-6742

e-ISSN

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Svazek periodika

112

Číslo periodika v rámci svazku

JANUARY

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

212-217

Kód UT WoS článku

000300201400017

EID výsledku v databázi Scopus

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