State Water Resources Research Institute Program

Project ID: 2009MA177B
Title: Bacterial Toxicity of Oxide Nanoparticles and Their Adhesion
Project Type: Research
Start Date: 4/ 1/2009
End Date: 3/31/2010
Congressional District: First
Focus Categories: Toxic Substances, Water Quality, Geochemical Processes
Keywords: Nanoparticles, toxicity, bacteria, oxide, water
Principal Investigator: Xing, Baoshan (University of Massachusetts Amherst)
Federal Funds: $ 4,976
Non-Federal Matching Funds: $ 13,967
Abstract: Massachusetts houses a great number of companies and manufacturers, universities and institutes using and working in nanotechnology. Oxide nanoparticles (NPs) are a large group of nanomaterials widely applied in insulators, catalyzers, paints, cosmetic products, textiles and semiconductors. NPs will be eventually introduced into the aquatic environments because of their widespread production and application. However, there is still lack of information on the NPs toxicity to the aquatic organisms and their influence on water quality. Therefore the overall goal of the proposed study is to evaluate the toxicity of oxide NPs to the common bacteria species in the aquatic system and their adhesion at the bacteria-water interface. Specifically, we will 1) evaluate the bacterial toxicity of nano-, bulk-particles and their released metal ions, 2) determine the relationship of bacterial toxicity with the NPs adhesion on bacteria surface, and 3) probe into the bacterial surface bond formation and structural change/damage by NPs using various techniques. This research is closely related to the priority areas of "Occurrence, fate, and transport of pollutant, and Ecological impacts" as outlined in the WRRC Call for Proposals.

Progress/Completion Report, 2009, PDF

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