Synergetic Tl and As retention in secondary minerals: An example of extreme arsenic and thallium pollution
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10434630" target="_blank" >RIV/00216208:11310/21:10434630 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wZI2pKOeRL" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wZI2pKOeRL</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apgeochem.2021.105114" target="_blank" >10.1016/j.apgeochem.2021.105114</a>
Alternative languages
Result language
angličtina
Original language name
Synergetic Tl and As retention in secondary minerals: An example of extreme arsenic and thallium pollution
Original language description
Secondary minerals could be effective scavengers of toxic arsenic (As) and thallium (Tl). In environments polluted by mining, these elements are abundant both in acid rock/mine drainage scenarios, as well as in carbonate-buffered environments. In this study we have investigated the behavior of As and Tl during weathering in mine waste dumps and an associated technosol sample from the Crven Dol locality (Allchar Tl-As-Sb-Au deposit, North Macedonia) contaminated with up to 142 g kg(-1) of As and 18 g kg(-1) of Tl, making it an As- and Tl-extreme environment. We identified As and Tl reservoirs and discuss their difference from those observed in other naturally As- and Tl-rich environments. The pore waters show high concentrations of As {up to 196 mg L(-1)} and Tl {up to 660 μg L(-1)}. Mild extractions mobilized up to 46% of the total Tl and 11% of the total As, indicating that a large amount of these toxic elements is weakly bound and can be easily mobilized into the environment. Apart from the recognition of Tl storage in several secondary phases {mainly as Tl(I) in members of the pharmacosiderite and jarosite groups, as well as Mn oxides, but also as very minor Tl(III) in other secondary phases}, this study also provides the first evidence of Tl uptake by previously unknown thallium arsenate phases (with Tl: As ratios approx. 2 and 4), detected in carbonate-buffered (near-neutral pH) As- and Tl-rich technosols and waste dumps. These results indicate the need for further studies on Tl speciation in extremely As- and Tl-rich environments.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10505 - Geology
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Geochemistry
ISSN
0883-2927
e-ISSN
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Volume of the periodical
135
Issue of the periodical within the volume
December
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
105114
UT code for WoS article
000720474600002
EID of the result in the Scopus database
2-s2.0-85118116415