EN
TR
Ecotoxic Effects of Cerium Oxide Nanoparticles on Bacteria
Abstract
In this study, the ecotoxic effects of cerium
oxide nanoparticles (CeO2 NPs) on both
gram positive Bacillus subtilis and gram negative Escherichia coli bacteria were
investigated. CeO2 NPs were prepared in synthetic water solutions
having different water contents (low, median and high ionic strength and
conductivity, pH 5.5 and 6.5). Bacteria were exposed to CeO2 NP
solutions in absence and presence of light conditions for 1 h. Different NP
concentrations (10, 100, 500 and 1000 mg/L) were used,
and environmental scanning electron microscopy imaging was performed for
morphological examination of the bacteria. Results showed an aggregation of NPs
relating to both high NP concentrations and high ionic strength of the water
solutions. Regardless of the test condition, CeO2 NPs highly
inhibited the bacterial growth.
Keywords
References
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Details
Primary Language
English
Subjects
-
Journal Section
Research Article
Publication Date
June 30, 2019
Submission Date
July 11, 2018
Acceptance Date
February 19, 2019
Published in Issue
Year 2019 Volume: 40 Number: 2