Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in Seawater
The detection and quantification of micro(nano)plastics in the marine environment are essential requirements to understand the full impacts of plastic pollution on the ecosystem and human health. Here, static light scattering (SLS) and dynamic (DLS) light scattering techniques are assessed for their...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-06-01
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| Series: | Microplastics |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2673-8929/2/2/16 |
| _version_ | 1797593400024760320 |
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| author | Gireeshkumar Balakrishnan Fabienne Lagarde Christophe Chassenieux Taco Nicolai |
| author_facet | Gireeshkumar Balakrishnan Fabienne Lagarde Christophe Chassenieux Taco Nicolai |
| author_sort | Gireeshkumar Balakrishnan |
| collection | DOAJ |
| description | The detection and quantification of micro(nano)plastics in the marine environment are essential requirements to understand the full impacts of plastic pollution on the ecosystem and human health. Here, static light scattering (SLS) and dynamic (DLS) light scattering techniques are assessed for their capacity to detect colloidal particles with diameters between d = 0.1 and 0.8 µm at very low concentrations in seawater. The detection limit of the apparatus was determined using model monodisperse spherical polystyrene latex particles with diameters of 0.2 µm and 0.5 µm. It is shown that the concentration and size of colloids can be determined down to about 10<sup>−6</sup> g/L. Light scattering measurements on seawater obtained from different locations in Western Europe show that colloidal particles were detected with DLS in seawater filtered through 0.8 µm pore size filters. The concentration of these particles was not higher than 1 µg/L, with an average diameter of about 0.6 µm. We stress that these particles are not necessarily plastic. No particles were detected after filtration through 0.45 µm pore size filters. |
| first_indexed | 2024-03-11T02:08:27Z |
| format | Article |
| id | doaj.art-9ed15535b3eb4572bd6ae5a8c76fd975 |
| institution | Directory Open Access Journal |
| issn | 2673-8929 |
| language | English |
| last_indexed | 2024-03-11T02:08:27Z |
| publishDate | 2023-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Microplastics |
| spelling | doaj.art-9ed15535b3eb4572bd6ae5a8c76fd9752023-11-18T11:44:28ZengMDPI AGMicroplastics2673-89292023-06-012220221410.3390/microplastics2020016Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in SeawaterGireeshkumar Balakrishnan0Fabienne Lagarde1Christophe Chassenieux2Taco Nicolai3Institut des Molécules et Matériaux du Mans, UMR CNRS 6283, Le Mans Université, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, FranceInstitut des Molécules et Matériaux du Mans, UMR CNRS 6283, Le Mans Université, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, FranceInstitut des Molécules et Matériaux du Mans, UMR CNRS 6283, Le Mans Université, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, FranceInstitut des Molécules et Matériaux du Mans, UMR CNRS 6283, Le Mans Université, Avenue Olivier Messiaen, CEDEX 9, 72085 Le Mans, FranceThe detection and quantification of micro(nano)plastics in the marine environment are essential requirements to understand the full impacts of plastic pollution on the ecosystem and human health. Here, static light scattering (SLS) and dynamic (DLS) light scattering techniques are assessed for their capacity to detect colloidal particles with diameters between d = 0.1 and 0.8 µm at very low concentrations in seawater. The detection limit of the apparatus was determined using model monodisperse spherical polystyrene latex particles with diameters of 0.2 µm and 0.5 µm. It is shown that the concentration and size of colloids can be determined down to about 10<sup>−6</sup> g/L. Light scattering measurements on seawater obtained from different locations in Western Europe show that colloidal particles were detected with DLS in seawater filtered through 0.8 µm pore size filters. The concentration of these particles was not higher than 1 µg/L, with an average diameter of about 0.6 µm. We stress that these particles are not necessarily plastic. No particles were detected after filtration through 0.45 µm pore size filters.https://www.mdpi.com/2673-8929/2/2/16nanoplasticsmicroplasticsseawatercolloidsstatic light scatteringdynamic light scattering |
| spellingShingle | Gireeshkumar Balakrishnan Fabienne Lagarde Christophe Chassenieux Taco Nicolai Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in Seawater Microplastics nanoplastics microplastics seawater colloids static light scattering dynamic light scattering |
| title | Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in Seawater |
| title_full | Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in Seawater |
| title_fullStr | Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in Seawater |
| title_full_unstemmed | Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in Seawater |
| title_short | Quantification of Very Low Concentrations of Colloids with Light Scattering Applied to Micro(Nano)Plastics in Seawater |
| title_sort | quantification of very low concentrations of colloids with light scattering applied to micro nano plastics in seawater |
| topic | nanoplastics microplastics seawater colloids static light scattering dynamic light scattering |
| url | https://www.mdpi.com/2673-8929/2/2/16 |
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