Geogenic and Pedogenic Inheritance of Arsenic, Antimony, Selenium and Tellurium in Poorly Developed and Metamorphic Soils
The content of arsenic, antimony, selenium and tellurium in soils from a territory with natural and man-caused load, located in the range of the Old Quaternary proluvial plume in the northeastern part of the Sofia valley, was studied. The contents have been determined by LA-ICP-MS, together with...
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| Format: | Article |
| Language: | English |
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Bulgarian Soil Science Society
2022-06-01
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| Series: | Bulgarian Journal of Soil Science |
| Subjects: | |
| Online Access: | https://www.bsss.bg/issues/Issue1_2022/BJSS_2022_1_1.pdf |
| Summary: | The content of arsenic, antimony, selenium and tellurium in soils from a territory with
natural and man-caused load, located in the range of the Old Quaternary proluvial plume in
the northeastern part of the Sofia valley, was studied. The contents have been determined by
LA-ICP-MS, together with those of more than 45 chemical elements, for the purpose of
future remediation and study of the impact of natural and man-made factors on the
geochemical relationships of the elements in the specific soil environment. The studied soil
types are Regosols and Cambisols, most of which have been changed and classified as
Technosols (IUSS Working Group WRB, 2015, Teoharov et al., 2019, Stoykova, 2021) under
the influence of industrial waste from the former Kremikovtzi metallurgical plant. Very high
contents of the groups of elements Te - Se and As - Sb have been established, which are
inherited from the soil - forming rocks with predominant, respectively syenite or ore material.
The content of arsenic in Technosols is on average 4 times higher than the maximum
permissible concentration of metalloid in industrial soils, and the arsenic in the control profile
of Cambisols exceeds 1.5 times the norm for the maximum permissible concentration for
arable land. The processes of overwetting, acidification and microbiological activity are the
factors that influence the redistribution of the four elements in the soil environment.
Contamination with agglomeration dust leads to the accumulation of antimony in the spolic
horizon, where it is associated with a number of heavy metals. Its more metallic character is
reflected in the statistically significant high positive correlation with iron - r (Sb-Fe) = 0.85,
which shows only this element. |
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| ISSN: | 2534-8787 2367-9212 |