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Cited by 419

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

Diffusion of Nanoparticles in a Biofilm

Peulen, Thomas-Otavio, Wilkinson, Kevin J.·2011·Environmental Science & Technology
DOI 10.1021/es103450g
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Abstract

In order to evaluate the risk of engineered nanomaterials in the natural environment, one must determine their mobility, among other factors. Such determinations are difficult given that natural systems are heterogeneous and biofilms are ubiquitous in soils and waters. The interaction and diffusion of several model nanoparticles (dextrans, fluorescent microspheres, Ag nanoparticles) were studied in situ using confocal microscopy and fluorescence correlation spectroscopy in a biofilm composed of Pseudomonas fluorescens. For the most part, relative self-diffusion coefficients decreased exponentially with the square of the radius of the nanoparticle. The precise growth conditions of the biofilm resulted in a variable density of both exopolymers and microbes, which was also shown to be an important parameter controlling the diffusion of the nanoparticles. Finally, the charge of the nanoparticles appeared to be important; for a dense bacterial biofilm, a greater than predicted decrease in the self-diffusion coefficient was observed for the negatively charged nano Ag.

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Metadata

Authors
Peulen, T.-O., & Wilkinson, K. J.
Venue
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Published
2011-03-24
Volume
45
Issue
8
Pages
3367-3373
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
DOI
10.1021/es103450g
OpenAlex
W2326443965
Cited by
419
References
38
FWCI
7.28
Type
journal article
Language
en
Open access
closed

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