Detecting small microplastics down to 1.3 μm using large area ATR-FTIR.

Autor: Liu Y; Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark; College of Environmental and Biological Engineering, Putian University, Putian 351100, China; Fujian Provincial Key Laboratory of Ecology-Toxicological Effects and Control for Emerging Contaminants, Putian University, Putian 351100, China; Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, Putian 351100, Fujian, China. Electronic address: yuanlil@build.aau.dk., Lüttjohann S; Bruker Optics GmbH & Co. KG, Rudolf-Plank-Straße 27, 76275 Ettlingen, Germany., Vianello A; Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark., Lorenz C; Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark., Liu F; Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark., Vollertsen J; Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark.
Jazyk: angličtina
Zdroj: Marine pollution bulletin [Mar Pollut Bull] 2024 Jan; Vol. 198, pp. 115795. Date of Electronic Publication: 2023 Nov 25.
DOI: 10.1016/j.marpolbul.2023.115795
Abstrakt: Large area attenuated total reflectance-Fourier transform infrared spectroscopy (LAATR-FTIR) is introduced as a novel technique for detecting small microplastics (MPs) down to 1.3 μm. Two different LAATR units, one with a zinc selenide (ZnSe) and one with a germanium (Ge) crystal, were used to detect reference MPs < 20 μm, and MPs in marine water samples, and compared with μ-FTIR in transmission mode. The LAATR units performed well in identifying small MPs down to 1.3 μm. However, they were poorly suited for large MPs as uneven particle thickness resulted in uneven contact between crystal and particle, misinterpreting large MPs as many small MPs. However, for more homogeneous matrices, the technique was promising. Further assessment indicated that there was little difference in spectra quality between transmission mode and LAATR mode. All in all, while LAATR units struggle to substitute transmission mode, it provides additional information and valuable information on small MPs.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 The Authors. Published by Elsevier Ltd.. All rights reserved.)
Databáze: MEDLINE
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