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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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

  • 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