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dc.contributor.author
Mehrabi, Kamyar
dc.contributor.author
Nowack, Bernd
dc.contributor.author
Arroyo Rojas Dasilva, Yadira
dc.contributor.author
Mitrano, Denise
dc.date.accessioned
2021-02-18T14:17:52Z
dc.date.available
2021-02-17T09:19:09Z
dc.date.available
2021-02-18T14:17:52Z
dc.date.issued
2017-05-16
dc.identifier.issn
0013-936X
dc.identifier.issn
1520-5851
dc.identifier.other
10.1021/acs.est.7b00597
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/469907
dc.description.abstract
Numerous nanometrology techniques have been developed in recent years to determine the size, concentration, and a number of other characteristics of engineered nanomaterials (ENM) in environmental matrices. Among the many available techniques, nanoparticle tracking analysis (NTA) can measure individual particles to create a size distribution and measure the particle number. Therefore, we explore the possibility to use these data to calculate the particle mass distribution. Additionally, we further developed the NTA methodology to explore its suitability for analysis of ENM in complex matrices by measuring ENM agglomeration and sedimentation in municipal solid waste incineration landfill leachates over time. 100 nm Au ENM were spiked into DI H2O and synthetic and natural leachates. We present the possibility of measuring ENM in the presence of natural particles based on differences in particle refractivity indices, delineate the necessity of creating a calibration curve to adjust the given NTA particle number concentration, and determine the instruments linear range under different conditions. By measuring the particle size and the particle number distribution, we were able to calculate the ENM mass remaining in suspension. By combining these metrics together with transmission electron microscopy (TEM) analyses, we could assess the extent of both homo- and heteroagglomeration as well as particle sedimentation. Reporting both size and mass based metrics is common in atmospheric particle measurements, but now, the NTA can give us the possibility of applying the same approach also to aqueous samples. © 2017 American Chemical Society.
en_US
dc.language.iso
en
en_US
dc.publisher
American Chemical Society
en_US
dc.title
Improvements in Nanoparticle Tracking Analysis To Measure Particle Aggregation and Mass Distribution: A Case Study on Engineered Nanomaterial Stability in Incineration Landfill Leachates
en_US
dc.type
Journal Article
dc.date.published
2017-05-08
ethz.journal.title
Environmental Science & Technology
ethz.journal.volume
51
en_US
ethz.journal.issue
10
en_US
ethz.journal.abbreviated
Environ. Sci. Technol.
ethz.pages.start
5611
en_US
ethz.pages.end
5621
en_US
ethz.publication.place
Washington, DC
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::09717 - Mitrano, Denise M. / Mitrano, Denise M.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02350 - Dep. Umweltsystemwissenschaften / Dep. of Environmental Systems Science::02721 - Inst. f. Biogeochemie u. Schadstoffdyn. / Inst. Biogeochem. and Pollutant Dynamics::09717 - Mitrano, Denise M. / Mitrano, Denise M.
en_US
ethz.date.deposited
2021-02-17T09:19:21Z
ethz.source
FORM
ethz.eth
yes
en_US
ethz.availability
Metadata only
en_US
ethz.rosetta.installDate
2021-02-18T14:18:04Z
ethz.rosetta.lastUpdated
2021-02-18T14:18:04Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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