Jump to main content
US EPA
United States Environmental Protection Agency
Search
Search
Main menu
Environmental Topics
Laws & Regulations
About EPA
Health & Environmental Research Online (HERO)
Contact Us
Print
Feedback
Export to File
Search:
This record has one attached file:
Add More Files
Attach File(s):
Display Name for File*:
Save
Citation
Tags
HERO ID
192383
Reference Type
Journal Article
Title
Trophic transfer of nanoparticles in a simplified invertebrate food web
Author(s)
Holbrook, RD; Murphy, KE; Morrow, JB; Cole, KD
Year
2008
Is Peer Reviewed?
1
Journal
Nature Nanotechnology
ISSN:
1748-3387
EISSN:
1748-3395
Publisher
NATURE PUBLISHING GROUP
Location
LONDON
Volume
3
Issue
6
Page Numbers
352-355
Language
English
PMID
18654546
DOI
10.1038/nnano.2008.110
Web of Science Id
WOS:000256612500016
Abstract
The unique chemical and physical properties of engineered nanomaterials that make them attractive for numerous applications also contribute to their unexpected behaviour in the environment and biological systems. The potential environmental risks, including their impact on aquatic organisms, have been a central argument for regulating the growth of the nanotechnology sector. Here we show in a simplified food web that carboxylated and biotinylated quantum dots can be transferred to higher trophic organisms (rotifers) through dietary uptake of ciliated protozoans. Quantum dot accumulation from the surrounding environment (bioconcentration) was limited in the ciliates and no quantum dot enrichment (biomagnification) was observed in the rotifers. Our findings indicate that dietary uptake of nanomaterials should be considered for higher trophic aquatic organisms. However, limited bioconcentration and lack of biomagnification may impede the detection of nanomaterials in invertebrate species.
EPub Date
05/30/2008
Publication Date
05/30/2008
Home
Learn about HERO
Using HERO
Search HERO
Projects in HERO
Risk Assessment
Transparency & Integrity