ENVR Souhail Al-Abed  Wednesday, March 24, 2010 

464 - Influence of natural organic matter on the stability of Bacteriophage MS2

Claudia I. Rinciog1, rinciogc@lafayette.edu, Steven E Mylon1, mylons@lafayette.edu, Nathan Schmidt2, Leonardo Gutierrez3, Gerard C. L Wong2, Thanh H. Nguyen3. (1) Department of Chemistry, Lafayette College, Easton, PA 18042, United States, (2) Department of Material Science, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States, (3) University of Illinois at Urbana-Champaign, Department of Civil and Environmental Engineering, Urbana, IL 61801, United States

The stability of functionalized nanoparticles generally results from both steric and electrostatic interactions. Naturally occurring nanoparticles such as viruses are known to exploit this strategy for stability against aggregation. In natural systems, naturally organic matter (NOM) can adsorb to and effectively functionalize nanoparticle surfaces, affecting the fate and transport of these nanoparticles. This study reports the results of time resolved dynamic light scattering experiments used to measure the aggregation kinetics of a model virus, the bacteriophage MS2, across a range of solution chemistries both with and without NOM in order to understand what factors might destabilize viruses in aquatic systems. Results from were confirmed by small angle X-ray scattering experiments, which indicate a transition from repulsive to attractive interactions between MS2 virus particles as monovalent salts are replaced by divalent salts.

Wednesday, March 24, 2010 06:00 PM
Influence of Natural Organic Matter on the Fate and Transport of Metals, Colloids and Nanoparticles in the Aquatic Systems (06:00 PM - 08:00 PM)
Location: The Moscone Center
Room: Hall D


*ACS does not own copyrights to the individual abstracts. For permission, please contact the author(s) of the abstract.


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