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Raman Tweezers for ...
Raman Tweezers for Small Microplastics and Nanoplastics Identification in Seawater
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Gillibert, R. (author)
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Balakrishnan, G. (author)
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Deshoules, Q. (author)
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Tardivel, M. (author)
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- Magazzu, Alessandro (author)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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Donato, M. G. (author)
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Marago, O. M. (author)
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de La Chapelle, M. L. (author)
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Colas, F. (author)
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Lagarde, F. (author)
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Gucciardi, P. G. (author)
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Rpente.Ej, Science V. P. (author)
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(creator_code:org_t)
- 2019-07-01
- 2019
- English.
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In: Environmental Science & Technology. - : American Chemical Society (ACS). - 0013-936X .- 1520-5851. ; 53:15, s. 9003-9013
- Related links:
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https://archimer.ifr...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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Abstract
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- Our understanding of the fate and distribution of micro- and nano- plastics in the marine environment is limited by the intrinsic difficulties of the techniques currently used for the detection, quantification, and chemical identification of small particles in liquid (light scattering, vibrational spectroscopies, and optical and electron microscopies). Here we introduce Raman Tweezers (RTs), namely optical tweezers combined with Raman spectroscopy, as an analytical tool for the study of micro- and nanoplastics in seawater. We show optical trapping and chemical identification of sub-20 mu m plastics, down to the 50 nm range. Analysis at the single particle level allows us to unambiguously discriminate plastics from organic matter and mineral sediments, overcoming the capacities of standard Raman spectroscopy in liquid, intrinsically limited to ensemble measurements. Being a microscopy technique, RTs also permits one to assess the size and shapes of particles (beads, fragments, and fibers), with spatial resolution only limited by diffraction. Applications are shown on both model particles and naturally aged environmental samples, made of common plastic pollutants, including polyethylene, polypropylene, nylon, and polystyrene, also in the presence of a thin ecocorona. Coupled to suitable extraction and concentration protocols, RTs have the potential to strongly impact future research on micro and nanoplastics environmental pollution, and enable the understanding of the fragmentation processes on a multiscale level of aged polymers.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- 20 mu-m
- marine-environment
- spectroscopy
- particles
- ingestion
- micro
- ftir
- nanoparticles
- aggregation
- degradation
- Engineering
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Gillibert, R.
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Balakrishnan, G.
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Deshoules, Q.
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Tardivel, M.
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Magazzu, Alessan ...
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Donato, M. G.
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show more...
-
Marago, O. M.
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de La Chapelle, ...
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Colas, F.
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Lagarde, F.
-
Gucciardi, P. G.
-
Rpente.Ej, Scien ...
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Environmental Sc ...
- By the university
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University of Gothenburg