dc.contributor.author | Luo, Sihai | |
dc.contributor.author | Zhang, Junjie | |
dc.contributor.author | de Mello, John Christian | |
dc.date.accessioned | 2024-02-12T10:04:02Z | |
dc.date.available | 2024-02-12T10:04:02Z | |
dc.date.created | 2023-11-23T10:04:20Z | |
dc.date.issued | 2023 | |
dc.identifier.citation | Frontiers in Bioengineering and Biotechnology. 2023, 11 . | en_US |
dc.identifier.issn | 2296-4185 | |
dc.identifier.uri | https://hdl.handle.net/11250/3116815 | |
dc.description.abstract | Micro- and nano-plastics (MNPs) are global contaminants of growing concern to the ecosystem and human health. In-the-field detection and identification of environmental micro- and nano-plastics (e-MNPs) is critical for monitoring the spread and effects of e-MNPs but is challenging due to the dearth of suitable analytical techniques, especially in the sub-micron size range. Here we show that thin gold films patterned with a dense, hexagonal array of ring-shaped nanogaps (RSNs) can be used as active substrates for the sensitive detection of micro- and nano-plastics by surface-enhanced Raman spectroscopy (SERS), requiring only small sample volumes and no significant sample preparation. By drop-casting 0.2-μL aqueous test samples onto the SERS substrates, 50-nm polystyrene (PS) nanoparticles could be determined via Raman spectroscopy at concentrations down to 1 μg/mL. The substrates were successfully applied to the detection and identification of ∼100-nm polypropylene e-MNPs in filtered drinking water and ∼100-nm polyethylene terephthalate (PET) e-MNPs in filtered wash-water from a freshly cleaned PET-based infant feeding bottle. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Frontiers Media S. A. | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Detection of environmental nanoplastics via surface-enhanced Raman spectroscopy using high-density, ring-shaped nanogap arrays | en_US |
dc.title.alternative | Detection of environmental nanoplastics via surface-enhanced Raman spectroscopy using high-density, ring-shaped nanogap arrays | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.volume | 11 | en_US |
dc.source.journal | Frontiers in Bioengineering and Biotechnology | en_US |
dc.identifier.doi | 10.3389/fbioe.2023.1242797 | |
dc.identifier.cristin | 2200730 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |