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- W3216797844 endingPage "113037" @default.
- W3216797844 startingPage "113037" @default.
- W3216797844 abstract "Over the past few decades, nonferrous mining has produced numerous waste rock and part of the waste that has not been properly treated was generally dumped at roadsides and hill slopes. However, the vertical distributions of toxic metal(loid)s and composition of microbial communities in waste heap and the under-laid pristine soil are rarely studied. In this work, the fraction-related distributions of toxic metal(loid)s were investigated at a waste heap profile and the indigenous microbial assemblages were also analyzed by Illumina sequencing of 16 s rRNA genes. Results showed that compared to the under-laid pristine soil, content of toxic metal(loid)s, especially Cd, As and Pb, in waste rock layer were higher. Most of As in subsoil existed as non-specifically sorbed and specifically-sorbed fractions, which could be ascribed to the migration from the upper layer. The mobility was significantly correlated with Eh, EC, clay content, CEC and the total content of metal(loid)s. Phyla Proteobacteria, Acidobacteria and Firmicutes dominated the microbial communities. The microbial community compositions at the genus level were similar, but their relative abundances were mainly influenced by pH, CEC, Eh, SOM, and bioavailability content of toxic metal(loid)s. Besides, microbial functions of elements (S, Fe, Mn and As) oxidation/reduction and metabolites (siderophore, biosurfactant, organic acid, phosphatase and urease) potentially were used for pollutants bioremediation." @default.
- W3216797844 created "2021-12-06" @default.
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- W3216797844 date "2021-12-01" @default.
- W3216797844 modified "2023-09-26" @default.
- W3216797844 title "Vertical distribution of the toxic metal(loid)s chemical fraction and microbial community in waste heap at a nonferrous metal mining site" @default.
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- W3216797844 doi "https://doi.org/10.1016/j.ecoenv.2021.113037" @default.
- W3216797844 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34856484" @default.
- W3216797844 hasPublicationYear "2021" @default.
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