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Title:

Transformations of Nanomaterials in the Environment

Date:

7/2012

Link to Journal Abstract

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.

Non-technical Summary:

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.

Content Emphasis

Review Article

Exposure Or Hazard Target

Multiple

Exposure Pathway

Other/Unspecified

Method Of Study

Environmental Study

Paper Type

Environmental Fate and Transport

Particle Type

Multiple