Nanomaterials in the environment: Behavior, fate, bioavailability, and effects—An updated review

Environmental Toxicology and Chemistry
By: , and 

Links

Abstract

The present review covers developments in studies of nanomaterials (NMs) in the environment since our much cited review in 2008. We discuss novel insights into fate and behavior, metrology, transformations, bioavailability, toxicity mechanisms, and environmental impacts, with a focus on terrestrial and aquatic systems. Overall, the findings were that: 1) despite substantial developments, critical gaps remain, in large part due to the lack of analytical, modeling, and field capabilities, and also due to the breadth and complexity of the area; 2) a key knowledge gap is the lack of data on environmental concentrations and dosimetry generally; 3) substantial evidence shows that there are nanospecific effects (different from the effects of both ions and larger particles) on the environment in terms of fate, bioavailability, and toxicity, but this is not consistent for all NMs, species, and relevant processes; 4) a paradigm is emerging that NMs are less toxic than equivalent dissolved materials but more toxic than the corresponding bulk materials; and 5) translation of incompletely understood science into regulation and policy continues to be challenging. There is a developing consensus that NMs may pose a relatively low environmental risk, but because of uncertainty and lack of data in many areas, definitive conclusions cannot be drawn. In addition, this emerging consensus will likely change rapidly with qualitative changes in the technology and increased future discharges. 

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Nanomaterials in the environment: Behavior, fate, bioavailability, and effects—An updated review
Series title Environmental Toxicology and Chemistry
DOI 10.1002/etc.4147
Volume 37
Issue 8
Year Published 2018
Language English
Publisher Society of Environmental Toxicology and Chemistry
Contributing office(s) National Research Program - Western Branch
Description 35 p.
First page 2029
Last page 2063