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Heterogeneities in fullerene nanoparticle aggregates affecting reactivity, bioactivity, and transport.

dc.contributor.author Badireddy, AR
dc.contributor.author Chae, SR
dc.contributor.author Farner Budarz, J
dc.contributor.author Lin, S
dc.contributor.author Therezien, M
dc.contributor.author Wiesner, Mark
dc.contributor.author Xiao, Y
dc.coverage.spatial United States
dc.date.accessioned 2011-06-21T17:27:02Z
dc.date.issued 2010-09-28
dc.identifier http://www.ncbi.nlm.nih.gov/pubmed/20707347
dc.identifier.uri https://hdl.handle.net/10161/4098
dc.description.abstract Properties of nanomaterial suspensions are typically summarized by average values for the purposes of characterizing these materials and interpreting experimental results. We show in this work that the heterogeneity in aqueous suspensions of fullerene C(60) aggregates (nC(60)) must be taken into account for the purposes of predicting nanomaterial transport, exposure, and biological activity. The production of reactive oxygen species (ROS), microbial inactivation, and the mobility of the aggregates of the nC(60) in a silicate porous medium all increased as suspensions were fractionated to enrich with smaller aggregates by progressive membrane filtration. These size-dependent differences are attributed to an increasing degree of hydroxylation of nC(60) aggregates with decreasing size. As the quantity and influence of these more reactive fractions may increase with time, experiments evaluating fullerene transport and toxicity end points must take into account the evolution and heterogeneity of fullerene suspensions.
dc.language eng
dc.language.iso en_US
dc.relation.ispartof ACS Nano
dc.relation.isversionof 10.1021/nn100620d
dc.subject Bacteriophages
dc.subject Escherichia coli
dc.subject Filtration
dc.subject Fullerenes
dc.subject Membranes, Artificial
dc.subject Particle Size
dc.subject Porosity
dc.subject Reactive Oxygen Species
dc.subject Surface Properties
dc.subject Ultraviolet Rays
dc.title Heterogeneities in fullerene nanoparticle aggregates affecting reactivity, bioactivity, and transport.
dc.title.alternative
dc.type Journal article
dc.description.version Version of Record
duke.date.pubdate 2010-9-0
duke.description.issue 9
duke.description.volume 4
dc.relation.journal Acs Nano
pubs.author-url http://www.ncbi.nlm.nih.gov/pubmed/20707347
pubs.begin-page 5011
pubs.end-page 5018
pubs.issue 9
pubs.organisational-group Civil and Environmental Engineering
pubs.organisational-group Duke
pubs.organisational-group Duke Science & Society
pubs.organisational-group Earth and Ocean Sciences
pubs.organisational-group Environmental Sciences and Policy
pubs.organisational-group Initiatives
pubs.organisational-group Institutes and Provost's Academic Units
pubs.organisational-group Nicholas School of the Environment
pubs.organisational-group Pratt School of Engineering
pubs.publication-status Published
pubs.volume 4
dc.identifier.eissn 1936-086X


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