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An extensive characterization of various environmentally relevant microplastics – material properties, leaching and ecotoxicity testing
ID Rozman, Ula (Author), ID Turk, Tilen (Author), ID Skalar, Tina (Author), ID Zupančič, Marija (Author), ID Čelan Korošin, Nataša (Author), ID Marinšek, Marjan (Author), ID Olivero-Verbel, Jesus (Author), ID Kalčíková, Gabriela (Author)

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Abstract
Microplastics in the environment occur in different sizes and shapes and are made of various polymers. Therefore, they also considerably differ in their properties and ecotoxicity. However, the majority of microplastics research uses pre-made spherical microplastics, which practically do not exist in the environment. Our work focused on a comprehensive study of six different types of microplastic that were prepared to simulate common microplastics found in the environment. All types of microplastics where chemically and physically characterized using Fourier-transform infrared spectroscopy, thermal analysis, field-emission scanning electron microscopy, optical microscopy and laser diffraction analysis. The specific surface area was determined using the BET method. Furthermore, effects of microplastics and microplastic leachates on a common duckweed (Lemna minor) were evaluated. All tested microplastics did not affect specific growth rate and chlorophyll a content in duckweed, while microplastics with a rough surface and sharp edges caused a significant reduction of duckweed root length. Microplastics made of Bakelite also showed an intensive leaching, which increased their ecotoxicity potential. Natural particles used as a control did not have any negative effect on duckweed. Overall, microplastic particles have significantly different ecotoxicity profiles depending on their physico-chemical properties. Therefore, the testing of environmentally relevant particles and their proper characterization, as well as the testing of microplastic leaching properties, is crucial for understanding of microplastics ecotoxicological potential.

Language:English
Keywords:freshwaters, duckweed, leachate, macrophytes, microplastics, vascular plants
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FKKT - Faculty of Chemistry and Chemical Technology
Publication status:Published
Publication version:Version of Record
Year:2021
Number of pages:10 str.
Numbering:Vol. 773, art. 145576
PID:20.500.12556/RUL-138400 This link opens in a new window
UDC:504.5:678:628.1
ISSN on article:0048-9697
DOI:10.1016/j.scitotenv.2021.145576 This link opens in a new window
COBISS.SI-ID:50576643 This link opens in a new window
Publication date in RUL:19.07.2022
Views:442
Downloads:124
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Record is a part of a journal

Title:Science of the total environment
Shortened title:Sci. total environ.
Publisher:Elsevier
ISSN:0048-9697
COBISS.SI-ID:26369024 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.

Secondary language

Language:Slovenian
Keywords:površinske vode, mala vodna leča, izlužki, makrofiti, mikroplastika, vaskularne rastline

Projects

Funder:ARRS - Slovenian Research Agency
Project number:P2-0191
Name:Kemijsko inženirstvo

Funder:ARRS - Slovenian Research Agency
Project number:P1-0175
Name:Napredna anorganska kemija

Funder:ARRS - Slovenian Research Agency
Project number:P1-0134
Name:Kemija za trajnostni razvoj

Funder:ARRS - Slovenian Research Agency
Project number:N2-0129
Name:Interakcije mikroplastike s plavajočimi rastlinami

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