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

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

[img]
Preview
Text
Identification_and_characterisation_of_individual_nanoplastics_by_scanning.pdf - Published Version
Available under License Creative Commons: Attribution (CC-BY).

Download (2MB) | Preview

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)

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 and 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:

23 Mar 2022 21:16

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

Actions (login required)

Edit item Edit item
Provide Feedback