Metal(loid)s remobilization and mineralogical transformations in smelter-polluted savanna soils under simulated wildfire conditions

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F21%3A00000208" target="_blank" >RIV/00025798:_____/21:00000208 - isvavai.cz</a>
Alternative codes found
RIV/67985831:_____/21:00555414 RIV/00216208:11310/21:10430041
Result on the web
<a href="https://doi.org/10.1016/j.jenvman.2021.1128989" target="_blank" >https://doi.org/10.1016/j.jenvman.2021.1128989</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jenvman.2021.112899" target="_blank" >10.1016/j.jenvman.2021.112899</a>

Result language
angličtina
Original language name
Metal(loid)s remobilization and mineralogical transformations in smelter-polluted savanna soils under simulated wildfire conditions
Original language description
Laboratory single-stepcombustion experiments (2–8 ◦C) and experiments with a continuous temperature increase (25–7 ◦C)were coupled with mineralogical investigations of the soils, ashes, and aerosols. Metals (Cd, Cu, Pb, Zn) werereleased at >;5–600 ◦C, mostly at the highest temperatures, where complex aerosol particles, predominantlycomposed of slag-like aggregates, formed. In contrast, As exhibited several emission peaks at ~275 ◦C,~370–410 ◦C, and ~580 ◦C, reflecting its complex speciation in the solid phase and indicating its remobilization,even during wildfires with moderate soil heating. At <;0 ◦C, As was successively released via the transformationof As-bearing hydrous ferric oxides, arsenolite (As2O3) grains attached to the organic matter fragments,metal arsenates, and/or As-bearing apatite, followed by the thermal decomposition of enargite (Cu3AsS4)at >;0 ◦C. The results indicate that the active and abandoned mining and smelting sites, especially those highlyenriched in As, should be protected against wildfires, which can be responsible for substantial As re-emissions.
Czech name
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Czech description
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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

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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