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. 2013 Mar;79(6):2061–2068. doi: 10.1128/AEM.03160-12

Fig 3.

Fig 3

Cyclic voltammograms following the addition of sodium sulfide and polysulfide in PS medium with the pH adjusted to 3.0 (A) and to 4.0 (B). (B) An additional scan of polysulfide-spiked PS medium following 15 min of incubation shows the disappearance of the formed nanocrystalline S80.