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Microplastics Detection in Streaming Tap Water with Raman Spectroscopy

Microplastic particles have been found in drinking water sources worldwide and, thus, also in our food and beverages. Especially small microplastics, with sizes of 1 mm and less, cannot be identified reliably without spectroscopic means such as Fourier transform infrared spectroscopy (FTIR) or Raman...

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Detalles Bibliográficos
Autores principales: Kniggendorf, Ann-Kathrin, Wetzel, Christoph, Roth, Bernhard
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6515371/
https://www.ncbi.nlm.nih.gov/pubmed/31003396
http://dx.doi.org/10.3390/s19081839
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author Kniggendorf, Ann-Kathrin
Wetzel, Christoph
Roth, Bernhard
author_facet Kniggendorf, Ann-Kathrin
Wetzel, Christoph
Roth, Bernhard
author_sort Kniggendorf, Ann-Kathrin
collection PubMed
description Microplastic particles have been found in drinking water sources worldwide and, thus, also in our food and beverages. Especially small microplastics, with sizes of 1 mm and less, cannot be identified reliably without spectroscopic means such as Fourier transform infrared spectroscopy (FTIR) or Raman spectroscopy, usually applied to the particles extracted from the samples. However, for drinking and tap water, with its comparatively low biological loads, direct observation may be possible and allows a point-of-entry monitoring for beverages and food to ensure uncontaminated drinking water is being used. In a proof of concept, we apply Raman spectroscopy to observe individual microplastic particles in tap water with added particulate and fluorescent contaminants streaming with 1 L/h through a custom-made flow cell. We evaluated several tubing materials for compatibility with microplastic suspensions containing three different polymers widely found in microplastic surveys worldwide. The experiment promises the monitoring of streaming tap water and even clear surface waters for microplastics smaller than 0.1 mm.
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spelling pubmed-65153712019-05-30 Microplastics Detection in Streaming Tap Water with Raman Spectroscopy Kniggendorf, Ann-Kathrin Wetzel, Christoph Roth, Bernhard Sensors (Basel) Article Microplastic particles have been found in drinking water sources worldwide and, thus, also in our food and beverages. Especially small microplastics, with sizes of 1 mm and less, cannot be identified reliably without spectroscopic means such as Fourier transform infrared spectroscopy (FTIR) or Raman spectroscopy, usually applied to the particles extracted from the samples. However, for drinking and tap water, with its comparatively low biological loads, direct observation may be possible and allows a point-of-entry monitoring for beverages and food to ensure uncontaminated drinking water is being used. In a proof of concept, we apply Raman spectroscopy to observe individual microplastic particles in tap water with added particulate and fluorescent contaminants streaming with 1 L/h through a custom-made flow cell. We evaluated several tubing materials for compatibility with microplastic suspensions containing three different polymers widely found in microplastic surveys worldwide. The experiment promises the monitoring of streaming tap water and even clear surface waters for microplastics smaller than 0.1 mm. MDPI 2019-04-18 /pmc/articles/PMC6515371/ /pubmed/31003396 http://dx.doi.org/10.3390/s19081839 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kniggendorf, Ann-Kathrin
Wetzel, Christoph
Roth, Bernhard
Microplastics Detection in Streaming Tap Water with Raman Spectroscopy
title Microplastics Detection in Streaming Tap Water with Raman Spectroscopy
title_full Microplastics Detection in Streaming Tap Water with Raman Spectroscopy
title_fullStr Microplastics Detection in Streaming Tap Water with Raman Spectroscopy
title_full_unstemmed Microplastics Detection in Streaming Tap Water with Raman Spectroscopy
title_short Microplastics Detection in Streaming Tap Water with Raman Spectroscopy
title_sort microplastics detection in streaming tap water with raman spectroscopy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6515371/
https://www.ncbi.nlm.nih.gov/pubmed/31003396
http://dx.doi.org/10.3390/s19081839
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