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  1. AU="Goodwin, David G"
  2. AU="Hill, Jonathan C"
  3. AU="Chankasingh, Kyle"
  4. AU="Narayanasami, Uma"
  5. AU="Chen, Ruichao"
  6. AU=Li Xuefeng AU=Li Xuefeng
  7. AU="Stef J.F. Letteboer"
  8. AU="Gewurz, H"
  9. AU="Linares, Mauricio"
  10. AU="Gnesi, Marco"
  11. AU="Park, Jinny"
  12. AU="Hill, Benjamin D"
  13. AU=Huang Chunfa
  14. AU="Skonieczny, Paul"
  15. AU="LIVINGSTON, M S"
  16. AU="Lidia Gonzalez-Quereda"
  17. AU="Korkmaz, Asli"
  18. AU="Patel, Mrinal"
  19. AU="Louis Chauvel"
  20. AU="Jampen, Laurent"
  21. AU="Tan, Jiacheng"
  22. AU="Weiss, Jonathan D"

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  1. Artikel ; Online: Evaluation of bioaccumulation of nanoplastics, carbon nanotubes, fullerenes, and graphene family materials

    Petersen, Elijah / Barrios, Ana C. / Bjorkland, Rhema / Goodwin, David G. / Li, Jennifer / Waissi, Greta / Henry, Theodore

    Environment International. 2023 Mar., v. 173 p.107650-

    2023  

    Abstract: Bioaccumulation is a key factor in understanding the potential ecotoxicity of substances. While there are well-developed models and methods to evaluate bioaccumulation of dissolved organic and inorganic substances, it is substantially more challenging to ...

    Abstract Bioaccumulation is a key factor in understanding the potential ecotoxicity of substances. While there are well-developed models and methods to evaluate bioaccumulation of dissolved organic and inorganic substances, it is substantially more challenging to assess bioaccumulation of particulate contaminants such as engineered carbon nanomaterials (CNMs; carbon nanotubes (CNTs), graphene family nanomaterials (GFNs), and fullerenes) and nanoplastics. In this study, the methods used to evaluate bioaccumulation of different CNMs and nanoplastics are critically reviewed. In plant studies, uptake of CNMs and nanoplastics into the roots and stems was observed. For multicellular organisms other than plants, absorbance across epithelial surfaces was typically limited. Biomagnification was not observed for CNTs and GFNs but were observed for nanoplastics in some studies. However, the reported absorption in many nanoplastic studies may be a consequence of an experimental artifact, namely release of the fluorescent probe from the plastic particles and subsequent uptake. We identify that additional work is needed to develop analytical methods to provide robust, orthogonal methods that can measure unlabeled (e.g., without isotopic or fluorescent labels) CNMs and nanoplastics.
    Schlagwörter absorbance ; absorption ; bioaccumulation ; carbon nanotubes ; ecotoxicology ; environment ; epithelium ; fluorescence ; fluorescent dyes ; fullerene ; graphene ; nanoplastics ; Trophic transfer ; Nanoparticles ; Nanotechnology ; Engineered nanomaterials
    Sprache Englisch
    Erscheinungsverlauf 2023-03
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel ; Online
    Anmerkung Use and reproduction
    ZDB-ID 554791-x
    ISSN 1873-6750 ; 0160-4120
    ISSN (online) 1873-6750
    ISSN 0160-4120
    DOI 10.1016/j.envint.2022.107650
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  2. Artikel ; Online: Quantitative evaluation of released nanomaterials from carbon nanotube epoxy nanocomposites during environmental exposure and mechanical treatment.

    Zhao, Yue / Goodwin, David G / Sung, Lipiin / Ramakrishnan, Girish / Wu, Qiyuan / Cen, Jiajie / Petersen, Elijah J / Orlov, Alexander

    NanoImpact

    2023  Band 32, Seite(n) 100486

    Abstract: Carbon nanotubes (CNTs) are promising nanomaterials exhibiting high thermal and electrical conductivities, significant stiffness, and high tensile strength. As a result, CNTs have been utilized as additives to enhance properties of various polymeric ... ...

    Abstract Carbon nanotubes (CNTs) are promising nanomaterials exhibiting high thermal and electrical conductivities, significant stiffness, and high tensile strength. As a result, CNTs have been utilized as additives to enhance properties of various polymeric materials in a broad range of fields. In this study, we investigated the release of CNTs from CNT epoxy nanocomposites exposed to environmental weathering and mechanical stresses. The presence and amount of CNTs released from degraded polymer nanocomposites is important because CNTs can impact physiological systems in humans and environmental organisms. The weathering experiments in this study included nanocomposite exposure to both UV and a water spray, to simulate sunlight and rain exposure, whereas mechanical stresses were induced by shaking and ultrasonication. CNT release from epoxy nanocomposites was quantified by a
    Mesh-Begriff(e) Humans ; Nanotubes, Carbon/chemistry ; Nanocomposites/chemistry ; Environmental Exposure ; Polymers/chemistry ; Water
    Chemische Substanzen Nanotubes, Carbon ; Polymers ; Water (059QF0KO0R)
    Sprache Englisch
    Erscheinungsdatum 2023-09-29
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ISSN 2452-0748
    ISSN (online) 2452-0748
    DOI 10.1016/j.impact.2023.100486
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: Evaluation of bioaccumulation of nanoplastics, carbon nanotubes, fullerenes, and graphene family materials.

    Petersen, Elijah / Barrios, Ana C / Bjorkland, Rhema / Goodwin, David G / Li, Jennifer / Waissi, Greta / Henry, Theodore

    Environment international

    2022  Band 173, Seite(n) 107650

    Abstract: Bioaccumulation is a key factor in understanding the potential ecotoxicity of substances. While there are well-developed models and methods to evaluate bioaccumulation of dissolved organic and inorganic substances, it is substantially more challenging to ...

    Abstract Bioaccumulation is a key factor in understanding the potential ecotoxicity of substances. While there are well-developed models and methods to evaluate bioaccumulation of dissolved organic and inorganic substances, it is substantially more challenging to assess bioaccumulation of particulate contaminants such as engineered carbon nanomaterials (CNMs; carbon nanotubes (CNTs), graphene family nanomaterials (GFNs), and fullerenes) and nanoplastics. In this study, the methods used to evaluate bioaccumulation of different CNMs and nanoplastics are critically reviewed. In plant studies, uptake of CNMs and nanoplastics into the roots and stems was observed. For multicellular organisms other than plants, absorbance across epithelial surfaces was typically limited. Biomagnification was not observed for CNTs and GFNs but were observed for nanoplastics in some studies. However, the reported absorption in many nanoplastic studies may be a consequence of an experimental artifact, namely release of the fluorescent probe from the plastic particles and subsequent uptake. We identify that additional work is needed to develop analytical methods to provide robust, orthogonal methods that can measure unlabeled (e.g., without isotopic or fluorescent labels) CNMs and nanoplastics.
    Mesh-Begriff(e) Nanotubes, Carbon/toxicity ; Fullerenes ; Microplastics ; Graphite ; Bioaccumulation
    Chemische Substanzen Nanotubes, Carbon ; Fullerenes ; Microplastics ; Graphite (7782-42-5)
    Sprache Englisch
    Erscheinungsdatum 2022-11-21
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article ; Review ; Research Support, Non-U.S. Gov't
    ZDB-ID 554791-x
    ISSN 1873-6750 ; 0160-4120
    ISSN (online) 1873-6750
    ISSN 0160-4120
    DOI 10.1016/j.envint.2022.107650
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel ; Online: Long-term wear effects on nanosilver release from commercially available food contact materials.

    Ntim, Susana Addo / Goodwin, David G / Sung, Lipiin / Thomas, Treye A / Noonan, Gregory O

    Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment

    2020  Band 36, Heft 11

    Abstract: Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that ... ...

    Abstract Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that result in significant changes to the surface of FCMs have not been investigated for NP migration into food. Therefore, a quantitative assessment of nanoparticle release from commercially available nanosilver-enabled FCMs was performed using an abrasion protocol to simulate cleaning, cutting, scraping and other stressful use conditions. Laser scanning confocal microscopy (LSCM) analysis showed a general increase in root mean square (RMS) roughness after FCM abrasion, and particle count (for particle sizes from 80 nm to 960 nm) at the surface was 4 orders of magnitude higher for the abraded FCMs. Migration was evaluated using both water and 3% (v/v, volume fraction) acetic acid as food simulants. Low concentrations of total Ag were detected in water simulants with a small portion (<10 ng dm
    Mesh-Begriff(e) Acetic Acid ; Anti-Infective Agents/analysis ; Anti-Infective Agents/toxicity ; Food Contamination/analysis ; Food Packaging ; Food Safety ; Humans ; Metal Nanoparticles/analysis ; Metal Nanoparticles/toxicity ; Microscopy, Confocal ; Nanocomposites/analysis ; Nanocomposites/toxicity ; Particle Size ; Silver/analysis ; Silver/toxicity ; Surface Properties ; Water
    Chemische Substanzen Anti-Infective Agents ; Water (059QF0KO0R) ; Silver (3M4G523W1G) ; Acetic Acid (Q40Q9N063P)
    Sprache Englisch
    Erscheinungsdatum 2020-10-30
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2462951-0
    ISSN 1944-0057 ; 1944-0049
    ISSN (online) 1944-0057
    ISSN 1944-0049
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  5. Artikel: Graphene/polymer nanocomposite degradation by ultraviolet light: The effects of graphene nanofillers and their potential for release.

    Goodwin, David G / Shen, Shih-Jia / Lyu, Yadong / Lankone, Ronald / Barrios, Ana C / Kabir, Samir / Perreault, François / Wohlleben, Wendel / Nguyen, Tinh / Sung, Lipiin

    Polymer degradation and stability

    2023  Band 182

    Abstract: The ultraviolet (UV)-induced degradation of graphene/polymer nanocomposites was investigated in this study. Specifically, the effect of few-layer graphene nanofillers on the degradation of a thermoplastic polyurethane (TPU) and the release potential of ... ...

    Abstract The ultraviolet (UV)-induced degradation of graphene/polymer nanocomposites was investigated in this study. Specifically, the effect of few-layer graphene nanofillers on the degradation of a thermoplastic polyurethane (TPU) and the release potential of graphene from the degraded nanocomposite surfaces were assessed. Graphene/TPU (G/TPU) nanocomposites and neat TPU were UV-exposed under both dry and humid conditions in the NIST SPHERE, a precisely controlled, high intensity UV-weathering device. Neat TPU and G/TPU were characterized over the time course of UV exposure using color measurements and infrared spectroscopy, for appearance and chemical changes, respectively. Changes in thickness and surface morphology were obtained with scanning electron microscopy. A new fluorescence quenching measurement approach was developed to identify graphene sheets at the nanocomposite surface, which was supported by contact angle measurements. The potential for graphene release from the nanocomposite surface was evaluated using a tape-lift method followed by microscopy of any particles present on the tape. The findings suggest that graphene improves the service life of TPU with respect to UV exposure, but that graphene becomes exposed at the nanocomposite surface over time, which may potentially lead to its release when exposed to small mechanical forces or upon contact with other materials.
    Sprache Englisch
    Erscheinungsdatum 2023-02-17
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 1502217-1
    ISSN 0141-3910
    ISSN 0141-3910
    DOI 10.1016/j.polymdegradstab.2020.109365
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  6. Artikel: The Impacts of Moisture and Ultraviolet Light on the Degradation of Graphene Oxide/Polymer Nanocomposites.

    Goodwin, David G / Lai, Trinny / Lyu, Yadong / Lu, Chen Yuan / Campos, Alejandro / Reipa, Vytas / Nguyen, Tinh / Sung, Lipiin

    NanoImpact

    2021  Band 19

    Abstract: The extent to which hydrophilic GO nanofillers regulate polymer degradation during exposure to a combination of ultraviolet (UV) radiation and moisture is presently unknown. Accordingly, this study systematically evaluated the effect of GO on polymer ... ...

    Abstract The extent to which hydrophilic GO nanofillers regulate polymer degradation during exposure to a combination of ultraviolet (UV) radiation and moisture is presently unknown. Accordingly, this study systematically evaluated the effect of GO on polymer degradability under both humid UV and dry UV conditions. Both GO accumulation at the polymer nanocomposite (PNC) surface and GO release following degradation were also investigated. Different mass loadings of GO were incorporated into waterborne polyurethane (WBPU), a commonly used exterior coating, and the resulting GO/WBPU nanocomposites were exposed to precisely controlled accelerated weathering conditions using the NIST Simulated Photodegradation via High Energy Radiant Exposure (SPHERE) device. Thickness loss and infrared spectroscopy measurements indicated GO slightly improved the durability of WBPU under dry UV conditions but not under humid UV conditions. Raman spectroscopy, scanning electron microscopy, and atomic force microscopy modulus measurements indicated that GO accumulation occurred at and near the PNC surface under both conditions but to a more rapid extent under humid UV conditions. Minimal GO release occurred under dry UV conditions as measured with Raman spectroscopy of aqueous run-off from a simulated rain spray applied to degraded PNCs. In contrast, PNC surface transformations under humid UV conditions suggested that GO release occurred.
    Sprache Englisch
    Erscheinungsdatum 2021-01-11
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ISSN 2452-0748
    ISSN 2452-0748
    DOI 10.1016/j.impact.2020.100249
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  7. Artikel ; Online: Long-term wear effects on nanosilver release from commercially available food contact materials.

    Addo Ntim, Susana / Goodwin, David G / Sung, Lipiin / Thomas, Treye A / Noonan, Gregory O

    Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment

    2019  Band 36, Heft 11, Seite(n) 1757–1768

    Abstract: Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that ... ...

    Abstract Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that result in significant changes to the surface of FCMs have not been investigated for NP migration into food. Therefore, a quantitative assessment of nanoparticle release from commercially available nanosilver-enabled FCMs was performed using an abrasion protocol to simulate cleaning, cutting, scraping and other stressful use conditions. Laser scanning confocal microscopy (LSCM) analysis showed a general increase in root mean square (RMS) roughness after FCM abrasion, and particle count (for particle sizes from 80 nm to 960 nm) at the surface was 4 orders of magnitude higher for the abraded FCMs. Migration was evaluated using both water and 3% (v/v, volume fraction) acetic acid as food simulants. Low concentrations of total Ag were detected in water simulants with a small portion (<10 ng dm
    Mesh-Begriff(e) Food Contamination/analysis ; Food Packaging ; Metal Nanoparticles/analysis ; Silver/analysis ; Water/chemistry
    Chemische Substanzen Water (059QF0KO0R) ; Silver (3M4G523W1G)
    Sprache Englisch
    Erscheinungsdatum 2019-08-22
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2462951-0
    ISSN 1944-0057 ; 1944-0049
    ISSN (online) 1944-0057
    ISSN 1944-0049
    DOI 10.1080/19440049.2019.1654138
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  8. Artikel: Long-term wear effects on nanosilver release from commercially available food contact materials

    Addo Ntim, Susana / Goodwin, David G / Sung, Lipiin / Thomas, Treye A / Noonan, Gregory O

    Food additives & contaminants. 2019 Nov. 2, v. 36, no. 11

    2019  

    Abstract: Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that ... ...

    Abstract Potential consumer exposure to nanoparticles (NPs) from nanoenabled food contact materials (FCMs) has been a driving force for migration studies of NPs from FCMs. Although NP migration from fresh, unused FCMs was not previously observed, conditions that result in significant changes to the surface of FCMs have not been investigated for NP migration into food. Therefore, a quantitative assessment of nanoparticle release from commercially available nanosilver-enabled FCMs was performed using an abrasion protocol to simulate cleaning, cutting, scraping and other stressful use conditions. Laser scanning confocal microscopy (LSCM) analysis showed a general increase in root mean square (RMS) roughness after FCM abrasion, and particle count (for particle sizes from 80 nm to 960 nm) at the surface was 4 orders of magnitude higher for the abraded FCMs. Migration was evaluated using both water and 3% (v/v, volume fraction) acetic acid as food simulants. Low concentrations of total Ag were detected in water simulants with a small portion (<10 ng dm⁻²) in the form of silver nanoparticles (AgNPs). Median particle diameter ranged from 39 nm to 50 nm with particle number concentrations on the order of 10⁶ particles dm⁻ ². Total Ag migration into 3% (v/v) acetic acid was significantly higher than in water; however, 3% (v/v) acetic acid was not suitable for evaluation of NP release due to dissolution of AgNPs to Ag⁺ under acidic solution chemistries.
    Schlagwörter acetic acid ; cleaning ; confocal laser scanning microscopy ; cutting ; food contact surfaces ; nanoparticles ; nanosilver ; particle size ; roughness ; silver
    Sprache Englisch
    Erscheinungsverlauf 2019-1102
    Umfang p. 1757-1768.
    Erscheinungsort Taylor & Francis
    Dokumenttyp Artikel
    ZDB-ID 2462951-0
    ISSN 1944-0057 ; 1944-0049
    ISSN (online) 1944-0057
    ISSN 1944-0049
    DOI 10.1080/19440049.2019.1654138
    Datenquelle NAL Katalog (AGRICOLA)

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  9. Artikel: Selection of an Optimal Abrasion Wheel Type for Nano-Coating Wear Studies under Wet or Dry Abrasion Conditions.

    Sung, Li-Piin / Chung, Yu-Fan / Goodwin, David G / Petersen, Elijah J / Hsueh, Hsiang-Chun / Stutzman, Paul / Nguyen, Tinh / Thomas, Treye

    Nanomaterials (Basel, Switzerland)

    2020  Band 10, Heft 8

    Abstract: Nanocoatings have numerous potential applications in the indoor environment, such as flooring finishes with increased scratch- and wear-resistance. However, given concerns about the potential environmental and human health effects of nanomaterials, it is ...

    Abstract Nanocoatings have numerous potential applications in the indoor environment, such as flooring finishes with increased scratch- and wear-resistance. However, given concerns about the potential environmental and human health effects of nanomaterials, it is necessary to develop standardized methods to quantify nanomaterial release during use of these products. One key choice for mechanical wear studies is the abrasion wheel. Potential limitations of different wheels include the release of fragments from the wheel during abrasion, wearing of the wheel from the abrasion process, or not releasing a sufficient number of particles for accurate quantitative analysis. In this study, we evaluated five different wheels, including a typically used silicon oxide-based commercial wheel and four wheels fabricated at the National Institute of Standards and Technology (NIST), for their application in nanocoating abrasion studies. A rapid, nondestructive laser scanning confocal microscopy method was developed and used to identify released particles on the abraded surfaces. NIST fabricated a high performing wheel: a noncorrosive, stainless-steel abrasion wheel containing a deep cross-patch. This wheel worked well under both wet and dry conditions, did not corrode in aqueous media, did not release particles from itself, and yielded higher numbers of released particles. These results can be used to help develop a standardized protocol for surface release of particles from nanoenabled products using a commercial rotary Taber abraser.
    Sprache Englisch
    Erscheinungsdatum 2020-07-24
    Erscheinungsland Switzerland
    Dokumenttyp Journal Article
    ZDB-ID 2662255-5
    ISSN 2079-4991
    ISSN 2079-4991
    DOI 10.3390/nano10081445
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  10. Artikel ; Online: Influence of polymer type and carbon nanotube properties on carbon nanotube/polymer nanocomposite biodegradation.

    Frank, Benjamin P / Goodwin, David G / Bohutskyi, Pavlo / Phan, Duc C / Lu, Xier / Kuwama, Leo / Bouwer, Edward J / Fairbrother, D Howard

    The Science of the total environment

    2020  Band 742, Seite(n) 140512

    Abstract: The interaction of anaerobic microorganisms with carbon nanotube/polymer nanocomposites (CNT/PNC) will play a major role in determining their persistence and environmental fate at the end of consumer use when these nano-enabled materials enter landfills ... ...

    Abstract The interaction of anaerobic microorganisms with carbon nanotube/polymer nanocomposites (CNT/PNC) will play a major role in determining their persistence and environmental fate at the end of consumer use when these nano-enabled materials enter landfills and encounter wastewater. Motivated by the need to understand how different parameters (i.e., polymer type, microbial phenotype, CNT characteristics) influence CNT/PNC biodegradation rates, we have used volumetric biogas measurements and kinetic modeling to study biodegradation as a function of polymer type and CNT properties. In one set of experiments, oxidized multiwall carbon nanotubes (O-MWCNTs) with a range of CNT loadings 0-5% w/w were incorporated into poly-ε-caprolactone (PCL) and polyhydroxyalkanoates (PHA) matrices and subjected to biodegradation by an anaerobic microbial community. For each CNT/PNC, complete polymer biodegradation was ultimately observed, although the rate of biodegradation was inhibited above certain critical CNT loadings dependent upon the polymer type. Higher loadings of pristine MWCNTs were needed to decrease the rate of polymer biodegradation compared to O-MWCNTs, an effect ascribed principally to differences in CNT dispersion within the polymer matrices. Above certain CNT loadings, a CNT mat of similar shape to the initial PNC was formed after polymer biodegradation, while below this threshold, CNT aggregates fragmented in the media. In situations where biodegradation was rapid, methanogen growth was disproportionately inhibited compared to the overall microbial community. Analysis of the results obtained from this study indicates that the inhibitory effect of CNTs on polymer biodegradation rate is greatest under conditions (i.e., polymer type, microbial phenotype, CNT dispersion) where biodegradation of the neat polymer is slowest. This new insight provides a means to predict the environmental fate, persistence, and transformations of CNT-enabled polymer materials.
    Mesh-Begriff(e) Biodegradation, Environmental ; Nanocomposites ; Nanotubes, Carbon ; Polymers
    Chemische Substanzen Nanotubes, Carbon ; Polymers
    Sprache Englisch
    Erscheinungsdatum 2020-06-30
    Erscheinungsland Netherlands
    Dokumenttyp Journal Article
    ZDB-ID 121506-1
    ISSN 1879-1026 ; 0048-9697
    ISSN (online) 1879-1026
    ISSN 0048-9697
    DOI 10.1016/j.scitotenv.2020.140512
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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