Ecological uptake and depuration of carbon nanotubes by Lumbriculus variegatus.
BACKGROUND: Carbon nanotubes represent a class of nanomaterials having broad application potentials and documented cellular uptake and ecotoxicological effects that raise the possibility that they may bioaccumulate in living organisms. OBJECTIVES: Radioactively labeled nanotubes were synthesized usi...
| Publicado en: | Environmental Health Perspectives Vol. 116; no. 4; pp. 496 - 501 |
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| Autores principales: | , , |
| Formato: | pictorial research tables/charts Journal Article |
| Publicado: |
National Institute of Environmental Health Sciences
Apr2008
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=105763752&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 105763752 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00916765 3B5 jtl: Environmental Health Perspectives issn: 00916765 maglogo: N pubinfo: dt: Apr2008 vid: 116 iid: 4 pid: 56539 pub: National Institute of Environmental Health Sciences place: Research Triangle Park, North Carolina artinfo: ui: 105763752 105763752 2009892235 10.1289/ehp.10883 NLM18414633 105763752 ppf: 496 ppct: 5 formats: fmt: @attributes: type: P tig: atl: Ecological uptake and depuration of carbon nanotubes by Lumbriculus variegatus. aug: au: Petersen EJ Huang Q Weber WJ Jr. affil: Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan, USA sug: subj: Carbon Environmental Pollution Invertebrates Nanotechnology Funding Source Water Human ab: BACKGROUND: Carbon nanotubes represent a class of nanomaterials having broad application potentials and documented cellular uptake and ecotoxicological effects that raise the possibility that they may bioaccumulate in living organisms. OBJECTIVES: Radioactively labeled nanotubes were synthesized using a novel methane chemical vapor deposition procedure. Single-walled carbon nanotubes (SWNTs), multiwalled carbon nanotubes (MWNTs), and pyrene were spiked to sediment samples, and the respective uptake and depuration of these nanotubes and pyrene were assessed by the oligochaete, Lumbriculus variegatus. RESULTS: 14C-labeled carbon nanotubes were developed for these experiments to overcome signifi- cant previous limitations for quantifying nanotube materials in environmental and biological media. Biota-sediment accumulation factors for SWNTs and MWNTs were observed to be almost an order of magnitude lower than those for pyrene, a four-ringed polycyclic aromatic hydrocarbon (PAH). The depuration behaviors of the oligochaete suggested that the nanotubes detected in these organisms were associated with sediments remaining in the organism guts and not absorbed into cellular tissues as was the pyrene. The results suggest that, unlike PAHs, purified carbon nanotubes do not readily absorb into organism tissues. pubtype: Academic Journal doctype: pictorial research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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