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Microbial community structures and their driving factors in a typical gathering area of antimony mining and smelting in South China

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Abstract

This study investigated soil microbial community in a typical gathering area of antimony mining and smelting in South China. The physical and chemical properties of different soils (mining waste dumps, flotation tailings, and smelting slag) and depths (0–20 cm, 40–60 cm, and 80–100 cm) were compared. The results showed that antimony (Sb) and arsenic (As) were the main pollutants, and their concentrations were 5524.7 mg/kg and 3433.7 mg/kg, respectively. Xanthates were found in the flotation tailings and smelting slag, and the highest concentration was 585.1 mg/kg. The microbial communities were analyzed by high-throughput sequencing, and it was shown that Proteobacteria, Acidobacteria, Chlorobacterium, Bacteroides, and Actinomycetes were the dominant taxa at the phylum level. There were obvious differences in microbial community structure in different sites. The dominant microorganism in the mining site was Chujaibacter. Subgroup_2_unclassified and Gemmatimonadaceae_unclassified were the prevalent microorganisms in the flotation and smelting sites, respectively. As, Sb, and xanthates were the main factors affecting the diversity and composition of bacteria in the flotation tailings and smelting slag areas. Therefore, this study provides experimental guidance and a theoretical basis for soil antimony pollution quality assessment, biological treatment, and environmental remediation.

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Data are available upon request from the corresponding author.

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Funding

This work was supported by the National Natural Science Foundation of China (No. 51934009, No. 52074353) and National Key Research and Development Program of China (No.2019YFC1803600).

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Weinong Wang: Conceptualization, investigation, data curation, methodology, formal analysis, writing — original draft. Shanshan Xiao: Methodology, formal analysis, visualization. Charles Amanze: Methodology, visualization, formal analysis, writing — review and editing. Richmond Anaman: Writing — review & editing, visualization. Weimin Zeng: Conceptualization, funding acquisition, supervision, writing — review and editing.

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Correspondence to Weimin Zeng.

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Wang, W., Xiao, S., Amanze, C. et al. Microbial community structures and their driving factors in a typical gathering area of antimony mining and smelting in South China. Environ Sci Pollut Res 29, 50070–50084 (2022). https://doi.org/10.1007/s11356-022-19394-6

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  • DOI: https://doi.org/10.1007/s11356-022-19394-6

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