Inactivation of Escherichia coli by Nanoparticulate Zerovalent Iron and Ferrous Ion
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- Inactivation of Escherichia coli by Nanoparticulate Zerovalent Iron and Ferrous Ion
- Kim, Jee Yeon; Park, Hee-Jin; Lee, Changha; Nelson, Kara L.; Sedlak, David L.; Yoon, Jeyong
- Deaerated conditions; Ferrous ion; Membrane integrity; Microscopic observations; Nano particulates; Reactive oxygen species; Respiratory activity; Zero-valent iron
- Issue Date
- AMER SOC MICROBIOLOGY
- APPLIED AND ENVIRONMENTAL MICROBIOLOGY, v.76, no.22, pp.7668 - 7670
- The mechanism of Escherichia coli inactivation by nanoparticulate zerovalent iron (nZVI) and Fe(II) was investigated using reactive oxygen species (ROS) quenchers and probes, an oxidative stress assay, and microscopic observations. Disruption of cell membrane integrity and respiratory activity was observed under deaerated conditions [more disruption by nZVI than Fe(II)], and .OH or Fe(IV) appears to play a role.
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