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Table 6 Heavy metal tolerance of the bacterial isolates obtained from soil of mining areas in Zamfara State

From: Physicochemical and molecular characterization of heavy metal–tolerant bacteria isolated from soil of mining sites in Nigeria

Heavy metal Conc. (ppm) Aeromonas sp. Aeromonas sobria Alcaligenes faecalis Bacillus spp. Enterococcus sp. Leptothrix ginsengisoli Micrococcus sp. Pseudomonas sp. Streptococcus sp.
Pb ˂ 6.0 + + + + + + + + +
≥ 6.0 + + + +
Cd ˂ 6.0 + + + + + + + + +
≥ 6.0 + + + +
Cr ˂ 6.0 + + + + + + + + +
≥ 6.0 + + + +
Cu ˂ 6.0 + + + + + + + + +
≥ 6.0 + + + +
  1. Key: + : tolerant, − : non-tolerant