Abstract—
Solutions of SbF3 and NaSbF4 (50 and 100 mg/L) were found to have a toxic effect on soil microflora. At the final concentration of 50 mg/L, bacteria and microscopic fungi were detected sporadically in the nutrient medium (MPA). At 100 mg/L, bacterial growth in the studied soils was completely suppressed. Microscopic fungi were found to be more resistant to the action of the studied compounds. Addition of 0.1 M sodium dihydrophosphate (NaH2PO4) solution to SbF3 or NaSbF4 solutions resulted in a 5.7‒6.9-fold decrease in the concentration of dissolved Sb3+ ions. However, this solution still had a toxic effect on the number of soil microorganisms. In contrast to reagent purification, the method of sorption extraction of Sb(III) was shown to be efficient. A solution containing 5000 mg/L antimony, which was used to dilute the soil suspension, completely suppressed the growth of microflora. After sorption treatment, the concentration of antimony decreased to 201.3 mg/L, and growth of microorganisms was noted.
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This study was carried out within the framework of State Assignment no. 0205-2021-0002, topic 2, section 5) of the Institute of Chemistry (Far Eastern Branch, Russian Academy of Sciences) and State Assignment no. 0207-2021-0004 of the Federal Scientific Center of the East Asia Terrestrial Biodiversity (Far Eastern Branch, Russian Academy of Sciences).
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Kiseleva, I.V., Kholomeidik, A.N., Shchapova, L.N. et al. Impact of Antimony Fluoride Compounds on Soil Microflora and Methods of Their Detoxification. Microbiology 91, 796–800 (2022). https://doi.org/10.1134/S0026261722601427
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DOI: https://doi.org/10.1134/S0026261722601427