Nanotechnology is an area of increased focus in scientific investigation and industrial application due to the unique physical properties of nanoparticles and their potential uses. While the apparent advantages of utilizing this technology offer prospective innovations in many sectors of human interests, there is still relatively little known about how these particles interact with the environment and those who inhabit that environment. This question is at the center of this paper. In this study, nanoscale elemental selenium particles with an average size of 75nm were synthesized and characterized using innovative nanotechnology instrumentation. The stability of the particles within this system were analyzed. The nanoparticles were introduced to the bacteria P. fuscovaginae for assessment for bioaccumulation, bioconcentration, and transformation of the elemental selenium nanoparticles. Varying concentrations of the particles and differing chemical species were evaluated to see their effects with the bacteria. The results showed the highest concentration of selenium nanoparticles in the treatment of 10 μg/mL. The treatment of 25 μg/mL has resulted in toxic effects on bacterial growth. The treatment of 5 μg/mL showed moderate uptake and accumulation. Preliminary data on speciation indicated the bacteria may have speciated the SeNP.
|Advisor:||Lin, Zhi-Qing Qi, McCracken, Vance|
|School:||Southern Illinois University at Edwardsville|
|School Location:||United States -- Illinois|
|Source:||MAI 55/03M(E), Masters Abstracts International|
|Subjects:||Plant Pathology, Nanotechnology, Environmental science|
|Keywords:||Accumulation, Nanoparticles, Selenium, Transformation|
Copyright in each Dissertation and Thesis is retained by the author. All Rights Reserved
The supplemental file or files you are about to download were provided to ProQuest by the author as part of a
dissertation or thesis. The supplemental files are provided "AS IS" without warranty. ProQuest is not responsible for the
content, format or impact on the supplemental file(s) on our system. in some cases, the file type may be unknown or
may be a .exe file. We recommend caution as you open such files.
Copyright of the original materials contained in the supplemental file is retained by the author and your access to the
supplemental files is subject to the ProQuest Terms and Conditions of use.
Depending on the size of the file(s) you are downloading, the system may take some time to download them. Please be