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Identification and characterisation of individual nanoplastics by scanning transmission X-ray microscopy (STXM)

Foetisch, Alexandra ; Filella, Montserrat ; Watts, Benjamin ; Vinot, Laure-Hélène ; Bigalke, Moritz (2022)
Identification and characterisation of individual nanoplastics by scanning transmission X-ray microscopy (STXM).
In: Journal of Hazardous Materials, 426
doi: 10.26083/tuprints-00022493
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Identification and characterisation of individual nanoplastics by scanning transmission X-ray microscopy (STXM)
Language: English
Date: 2022
Place of Publication: Darmstadt
Publisher: Elsevier
Journal or Publication Title: Journal of Hazardous Materials
Volume of the journal: 426
Collation: 9 Seiten
DOI: 10.26083/tuprints-00022493
Corresponding Links:
Origin: Secondary publication service
Abstract:

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 fine-structure 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.

Uncontrolled Keywords: Nanoplastic analysis, Soil pollution, Environmental pollution, Scanning transmission X-ray microscopy
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-224934
Classification DDC: 500 Science and mathematics > 550 Earth sciences and geology
Divisions: 11 Department of Materials and Earth Sciences > Earth Science > Department of Soil Mineralogy and Soil Chemistry
Date Deposited: 18 Oct 2022 12:27
Last Modified: 26 Apr 2023 08:17
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/22493
PPN: 50724012X
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