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Single-particle mul...
Single-particle multi-element fingerprinting (spMEF) using inductively-coupled plasma time-of-flight mass spectrometry (ICP-TOFMS) to identify engineered nanoparticles against the elevated natural background in soils
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Praetorius, A. (författare)
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Gundlach-Graham, A. (författare)
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Goldberg, E. (författare)
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Fabienke, W. (författare)
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Navratilova, J. (författare)
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- Gondikas, Andreas P., 1981 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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Kaegi, R. (författare)
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Günther, D. (författare)
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Hofmann, T. (författare)
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Von Der Kammer, F. (författare)
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(creator_code:org_t)
- 2017
- 2017
- Engelska.
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Ingår i: Environmental Science: Nano. - : Royal Society of Chemistry (RSC). - 2051-8153 .- 2051-8161. ; 4:2, s. 307-314
- Relaterad länk:
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The discrimination of engineered nanoparticles (ENPs) from the natural geogenic background is one of the preeminent challenges for assessing their potential implications. At low ENP concentrations, most conventional analytical techniques are not able to take advantage of inherent differences (e.g. in terms of composition, isotopic signatures, element ratios, structure, shape or surface characteristics) between ENPs and naturally occurring nanoscale particles (NNPs) of similar composition. Here, we present a groundbreaking approach to overcome these limitations and enable the discrimination of man-made ENPs from NNPs through simultaneous detection of multiple elements on an individual particle level. This new analytical approach is accessible by an inductively-coupled plasma time-of-flight mass spectrometer (ICP-TOFMS) operated in single-particle mode. Machine learning is employed to classify ENPs and NNPs based on their unique elemental fingerprints and quantify their concentrations. We demonstrate the applicability of this single-particle multi-element fingerprinting (spMEF) method by distinguishing engineered cerium oxide nanoparticles (CeO2 ENPs) from natural Ce-containing nanoparticles (Ce-NNPs) in soils at environmentally relevant ENP concentrations, orders of magnitude below the natural background.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
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- art (ämneskategori)
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Till lärosätets databas
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Praetorius, A.
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Gundlach-Graham, ...
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Goldberg, E.
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Fabienke, W.
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Navratilova, J.
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Gondikas, Andrea ...
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visa fler...
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Kaegi, R.
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Günther, D.
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Hofmann, T.
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Von Der Kammer, ...
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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och Ekologi
- Artiklar i publikationen
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Environmental Sc ...
- Av lärosätet
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Göteborgs universitet