Foetisch, Alexandra; Filella, Montserrat; Watts, Benjamin; Vinot, Laure-Hélène; Bigalke, Moritz (2021). Identification and characterisation of individual nanoplastics by scanning transmission X-ray microscopy (STXM). Journal of hazardous materials, 426, p. 127804. Elsevier 10.1016/j.jhazmat.2021.127804
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Nanoplastics (NP) are of environmental and human health concern. We tested a novel NP extraction method and scanning transmission X-ray spectro-microscopy (STXM) in combination with near-edge X-ray absorption finestructure spectroscopy (NEXAFS) to image and identify individual NP in environmental and food matrices. We (1) discussed the potential of STXM compared to other methods potentially suitable for NP analysis, (2) applied the method on NP suspensions of eight of the most common polymers, (3) analyzed environmental water and soil samples spiked with NP and (4) characterized NP in tea water infused in plastic teabags and unspiked soil samples. Here we show that STXM has methodological advantages and that polymers give characteristic spectra, which allows NP identification in environmental and food matrices. For soils we deliver a visual and spectroscopic characterization of NP, proving their presence and highlighting their diversity. Thus, STXM, can be used for the detection and characterisation of NP in different types of matrices.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
09 Interdisciplinary Units > Microscopy Imaging Center (MIC) 08 Faculty of Science > Institute of Geography > Physical Geography > Unit Soil Science 08 Faculty of Science > Institute of Geography 08 Faculty of Science > Institute of Geography > Physical Geography |
UniBE Contributor: |
Foetisch, Alexandra, Vinot, Laure-Hélène Isaure Marie, Bigalke, Moritz |
Subjects: |
500 Science 500 Science > 550 Earth sciences & geology 900 History > 910 Geography & travel |
ISSN: |
0304-3894 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Ariane Viviane Lisa Grimmer |
Date Deposited: |
02 Dec 2021 07:57 |
Last Modified: |
05 Dec 2022 15:55 |
Publisher DOI: |
10.1016/j.jhazmat.2021.127804 |
Uncontrolled Keywords: |
Nanoplastic analysis Soil pollution Environmental pollution Scanning transmission X-ray microscopy |
BORIS DOI: |
10.48350/161560 |
URI: |
https://boris.unibe.ch/id/eprint/161560 |
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