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Transformations of Nanomaterials in the Environment
Link to Journal Abstract
Increasing use of engineered nanomaterials with novel properties relative to their bulk counterparts has generated a need to define their behaviors and impacts in the environment. The high surface area to volume ratio of nanoparticles results in highly reactive and physiochemically dynamic materials in environmental media. Many transformations, e.g. reactions with biomacromolecules, redox reactions, aggregation, and dissolution, may occur in both environmental and biological systems. These transformations and others will alter the fate, transport, and toxicity of nanomaterials. The nature and extent of these transformations must be understood before significant progress can be made toward understanding the environmental risks posed by these materials.
This paper briefly reviews what is known about chemical, physical, and biologically mediated transformations of nanomaterials (NMs) in natural systems and their effects on the resulting NM behavior. The authors also discuss state-of-the-science knowledge and instrumentation gaps preventing us from quantifying and predicting these transformations in biological and environmental media.
Exposure Or Hazard Target
Method Of Study
Environmental Fate and Transport
Risk Exposure Group
Environ. Sci. Technol., 2012, 46(13): 6893-6899
Environmental Science & Technology
Lowry GV, Gregory KB, Apte SC, Lead JR
Last updated on August 9, 2012
This work is supported in part by the Nanoscale Science and Engineering Initiative of the National Science Foundation
under NSF Award Number EEC-0118007.
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