Cited by 585Microplastics and Plastic PollutionSpectroscopy and Chemometric AnalysesCultural Heritage Materials Analysis

Reference database design for the automated analysis of microplastic samples based on Fourier transform infrared (FTIR) spectroscopy

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Primpke, Sebastian, Wirth, Marisa, Lorenz, Claudia, Gerdts, Gunnar·2018·Analytical and Bioanalytical Chemistry

Abstract

The identification of microplastics becomes increasingly challenging with decreasing particle size and increasing sample heterogeneity. The analysis of microplastic samples by Fourier transform infrared (FTIR) spectroscopy is a versatile, bias-free tool to succeed at this task. In this study, we provide an adaptable reference database, which can be applied to single-particle identification as well as methods like chemical imaging based on FTIR microscopy. The large datasets generated by chemical imaging can be further investigated by automated analysis, which does, however, require a carefully designed database. The novel database design is based on the hierarchical cluster analysis of reference spectra in the spectral range from 3600 to 1250 cm−1. The hereby generated database entries were optimized for the automated analysis software with defined reference datasets. The design was further tested for its customizability with additional entries. The final reference database was extensively tested on reference datasets and environmental samples. Data quality by means of correct particle identification and depiction significantly increased compared to that of previous databases, proving the applicability of the concept and highlighting the importance of this work. Our novel database provides a reference point for data comparison with future and previous microplastic studies that are based on different databases.

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  1. [29]Bienz S Bigler L Fox T Meier H Spektroskopische Methoden in der organischen Chemie / Hesse-Meier-Zeeh 2016 Stuttgart Georg Thieme Verlag

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Authors
Primpke, S., Wirth, M., Lorenz, C., & Gerdts, G.
Affiliations
Alfred-Wegener-Institut Helmholtz-Zentrum für Polar- und Meeresforschung (DE)
Corresponding author
Primpke, Sebastian
Venue
Analytical and Bioanalytical Chemistry
Published
2018-07-06
Volume
410
Issue
21
Pages
5131-5141
ISSN
  • 1618-2642 (ISSN-L)
  • 1618-2650
OpenAlex
W2856517393
Cited by
584
References
27
Citations by year
2026: 89 · 2025: 75 · 2024: 90 · 2023: 92 · 2022: 82 · 2021: 75 · 2020: 50 · 2019: 25 · 2018: 4
FWCI
14.52
Type
journal article
Language
en
Open access
Locations
  • Analytical and Bioanalytical Chemistry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Helmholtz-Zentrum für Polar-und Meeresforschung (Alfred-Wegener-Institut) (submittedVersion)
  • VBN Forskningsportal (Aalborg Universitet) (submittedVersion, other-oa)
Funders
Bundesministerium für Bildung und Forschung (03F0734A)
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Chemistry › Analytical Chemistry › Spectroscopy and Chemometric Analyses
  • Social Sciences › Arts and Humanities › Archeology › Cultural Heritage Materials Analysis
Keywords
microplastics, FTIR spectroscopy, FTIR microscopy, chemical imaging, hierarchical clustering, reference spectra, automated analysis, environmental samples, microplastic detection

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