Thermally-induced release of arsenic from minerals and phases relevant to polluted natural systems affected by wildfires
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F25%3A00617939" target="_blank" >RIV/67985831:_____/25:00617939 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/25:10494624
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0883292725000411?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0883292725000411?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apgeochem.2025.106318" target="_blank" >10.1016/j.apgeochem.2025.106318</a>
Alternative languages
Result language
angličtina
Original language name
Thermally-induced release of arsenic from minerals and phases relevant to polluted natural systems affected by wildfires
Original language description
Fire-induced arsenic (As) emission from contaminated biomass or soil is dependent on its solid-phase speciation. To quantify the nature of this release, environmentally relevant As-bearing compounds (sulfides, sulfosalts, As-oxides, arsenates, As-doped Fe-oxyhydroxides and organic material) were experimentally heated with a linear temperature increase (25–800 °C) and simultaneous detection of As and other emitted elements. Organic As-bearing materials (fungi, dimethylarsinic acid-DMAA) exhibited the peak of As release at the lowest temperatures of 275–350 °C, followed by arsenolite (As2O3) with the maximum As emission at ∼400 °C. Realgar (As4S4) and orpiment (As2S3) exhibited the maximum As release at 425–450 °C, while enargite (Cu3AsS4) and arsenopyrite (FeAsS) released As at much higher temperatures with emission peaks at ∼625 and > 725 °C, respectively. Similarly, As-bearing Fe-oxyhydroxides emitted As at temperatures exceeding 650 °C. Arsenic emission from arsenates was rather variable and peaked at ∼700 °C for conichalcite [CaCu(AsO4)(OH)], and scorodite (FeAsO4·2H2O), while for mimetite [Pb5(AsO4)3Cl], it peaked towards the upper limit of the temperature range. These results suggest that typical low intensity wildland fires would affect only organically bound As and arsenolite, while higher intensity wildland fires could cause the redistribution of As from all studied phases, thereby posing a significant environmental risk of As redistribution beyond contaminated sites.
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
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
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
182
Issue of the periodical within the volume
March
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
106318
UT code for WoS article
001430935100001
EID of the result in the Scopus database
2-s2.0-85217977562