Speciation and mobility of arsenic and antimony in soils and mining wastes from an abandoned Sb–Au mining area
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F23%3A10468338" target="_blank" >RIV/00216208:11310/23:10468338 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_RdaDXkuUZ" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=_RdaDXkuUZ</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apgeochem.2023.105665" target="_blank" >10.1016/j.apgeochem.2023.105665</a>
Alternative languages
Result language
angličtina
Original language name
Speciation and mobility of arsenic and antimony in soils and mining wastes from an abandoned Sb–Au mining area
Original language description
Gold mining activities have long been recognized as one of the most important local sources of arsenic (As) and antimony (Sb). While the environmental impact of As is documented in the literature from many mining regions worldwide, still little data is available concerning the environmental chemistry and associations of Sb. Here, we used bulk analyses, selective extractions, X-ray diffraction, electron microprobe, and Raman microspectrometry to determine and compare the distribution, speciation, and mobility of As and Sb in three historical mining wastes and two soil profiles at the Krasna Hora-Mile.sov and Pricovy Sb-Au ore districts (Czech Republic). The mining wastes were slightly alkaline, with both high and variable concentrations of As (318-1360 mg/kg) and Sb (214-8740 mg/kg). The naturally developed soils were acidic to neutral and enriched in As (up to 208 mg/kg) as well as in Sb (up to 255 mg/kg), with the highest concentrations in the arable topsoil (<40 cm). In the mining wastes, the primary ore minerals (arsenopyrite, pyrite, and stibnite) have been substantially oxidized and replaced by secondary As and Sb mineral phases such as Fe (hydr)oxides, Ca-Fe-Sb (hydr)oxides, as well as the less common Ca-Sb (hydr)oxides and Ca-Fe arsenates. The primary sulfide minerals were absent in the soils, and both As and Sb were particularly bound to crystalline Fe (hydr)oxides (goethite and hematite) and clay minerals (especially true for Sb). The leaching of As and Sb from all the samples with water was pH-dependent and relatively low, as less than 2.1% of the total As and Sb contents in the samples had been released. Water-extractable concentrations were usually below 30 μg/L for As and 450 μg/L for Sb, except for an alkaline and As- and Sb-rich mining wastes, which released up to 1500 μg/L of As and 5400 μg/L of Sb. Interaction of agricultural soils with low PO4(3-) indicated that As was more likely mobilized by the addition of low PO4(3-) (0.1 mM) than Sb was. Although the water extraction data mostly documented the higher mobility of Sb compared to As, the addition of low PO4(3-) into agricultural soils strongly increases As mobility. Based on the results of this study, leaching of As and Sb from mining wastes by rainwater can contribute to the dispersion of these metalloids and a potential hazard for the surrounding 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
<a href="/en/project/GA22-27939S" target="_blank" >GA22-27939S: Effects of soil geochemistry and mineralogy on the mobility and bioaccessibility of arsenic from soils with different phosphate levels</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
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
1872-9134
Volume of the periodical
152
Issue of the periodical within the volume
May
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
105665
UT code for WoS article
000985883200001
EID of the result in the Scopus database
2-s2.0-85152591578