Extremely High Soil Copper Content, yet Low Phytotoxicity: A Unique Case of Monometallic Soil Pollution at Kargaly, Russia

Dovletyarova, E.A.; Zhikharev, A.P.; Polyakov, D.G.; Karpukhin, M.M.; Buzin, I.S.; Yáñez, C.; Neaman, A.

Авторы: Dovletyarova Elvira A., Zhikharev Alexander P., Polyakov Dmitry G., Karpukhin Mikhail M., Buzin Igor S., Yáñez Carolina, Neaman Alexander
Журнал: Environmental Toxicology and Chemistry
Том: 42
Номер: 3
Год издания: 2023
Издательство: Society of Environmental Toxicology and Chemistry
Местоположение издательства: United States
Первая страница: 707
Последняя страница: 713
DOI: 10.1002/etc.5562
Аннотация: An agricultural field in Kargaly, Orenburg region, Russia, where copper mining and smelting activities were carried out during the 18th–20th centuries. Samples of Mollisols (chernozems) were collected in the studied field. At several sampling points there were copper ore rocks on the surface, containing malachite (CuCO3 · Cu(OH)2). The soil samples had a high copper content, up to approximately 10 g kg−1, compared with 75 mg kg−1 in the background soil. Importantly, the content of other elements in all soil samples was similar to that in the background soil, highlighting the uniqueness of the monometallic contamination in the study area. Despite the extremely high total copper content, exchangeable copper was relatively low, with a maximum of approximately 0.5 mg kg−1. We performed a short-term (21-day) ecotoxicity assessment using perennial ryegrass as an indicator of copper toxicity. Contrary to expectations, plant growth was not affected by the high copper content in the studied soils. The low copper phytotoxicity may be explained by the low solubility of malachite.
Добавил в систему: Карпухин Михаил Михайлович

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Extremely High Soil Copper Content, yet Low Phytotoxicity: A Unique Case of Monometallic Soil Pollution at Kargaly, Russiaстатья

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