EMODnet Product Catalogue
Microlitter particles in water surface sampled with ferrybox in Danish waters 2019 - 2020
In a pilot study, microlitter was sampled with a Ferry Box system on the commercial ferry (M/S Color Line Fantasy) between Oslo and Kiel. The system acquired samples in the Danish part of the Skagerrak and Kattegat. In total thirteen samples were collected from September 2019 to February 2020 using mesh sizes 100 and 500 µm. Eleven samples were successfully processed. The samples were subsequently processed and analysed for chemical composition using FTIR. Microplastic amounts found ranged from 0 to 1.85 fragments or fibers per m3 (average 0.71 per m3).
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| Date | 2021-10-08 |
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| Date type | Creation: Date identifies when the resource was brought into existence |
| Date type | Revision: Date identifies when the resource was examined or re-examined and improved or amended |
| Date | 2022-10-27 |
| Date type | Publication: Date identifies when the resource was issued |
| Date type | Publication: Date identifies when the resource was issued |
| Unique resource identifier | 3fc2c370-ce1a-4b9f-becd-ac675431ffb2 |
Point of contact
| Organisation name | The Danish Environmental Protection Agency |
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| Delivery point | Haraldsgade 53 |
| City | Copenhagen Ø |
| Postal code | 2100 |
| Country | Denmark |
| Electronic mail address | mst@mst.dk |
| Linkage | https://eng.mst.dk/ |
| Role | Dataset Holding Organisation: Dataset Holding Organisation |
Point of contact
| Organisation name | Aarhus University, Department of Bioscience, Marine Ecology Roskilde |
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| Delivery point | 399 Frederiksborgvej P.O. Box 358 |
| City | Roskilde |
| Postal code | DK-4000 |
| Country | Denmark |
| Linkage | http://bios.au.dk/en/ |
| Role | Author: Party who authored the resource |
Descriptive keywords
| GEMET - INSPIRE themes, version 1.0 | |
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| SeaVoX salt and fresh water body gazetteer |
Storebaelt
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Kattegat
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| SeaDataNet Agreed Parameter Groups | Pollution |
| SeaDataNet Parameter Discovery Vocabulary |
Suspended particulate material grain size parameters
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Micro-litter in water bodies
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| Language | English: English |
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| Character set | UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 |
| Topic category code |
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| Supplemental Information | Project report |
Reference System Information
| Anchor | WGS 1984 |
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| Hierarchy level | Dataset: Information applies to the dataset |
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| Statement | The FerryBox system is set up to collect water from a seawater intake situated at 3 m depth on the starboard side of the M/S Color Line Fantasy. Although varying depending on the speed of the Fantasy, design calculations have shown that this represents mixed surface waters down to approximately 4m depth. The system is remotely operated to start sampling and to stop again at designated positions along the vessels transect. Water is passed over a series of metal sieves housed in a stainless-steel sieve holder with sieves of mesh sizes 100-500 mu. When samples contained low levels of SPM and organic matter, they were directly rinsed from mesh filters using pre-filtered water and filtered through GF/A filters or stainless-steel mesh filters (pore size <100 µm), O 47 mm. These filters were pre-checked for microplastic content before the filtration. For samples with higher organic matter content, filtration was performed using stainless steel mesh filters before further processing. In most filter cases, 3 – 6 GF/A or stainless-steel filters were used to rinse all the material from the mesh filters, depending on volume of collected SPM. The filter with material was immediately transferred to a petri dish and covered prior to drying and analysis. Filtration was carried out in sterile conditions (laminar flow with HEPA filter). A digestion step using of 10% KOH followed by filtration was used to extract microplastics from samples which contained large amounts of organic matter. Acetic acid treatment was carried out for these samples and applied after the KOH treatment. After preparation, all samples were analyzed by visual identification followed by chemical confirmation of the polymer material. Visual analysis followed standard NIVA protocols where potential plastics were isolated, photographed, described in terms of shape and color, and measured along the longest and shorted length (mm). This was carried out using a stereo microscope with an Infinity 1-3C mounted camera and INFINITY ANALYZE and CAPTURE software. All particles found were marked on the filter paper for easy identification prior to chemical characterization. Visual identification of microplastics, especially in the smaller size range (> 300 µm) was performed using single-point FT-IR. NIVA conducted ATR-FT-IR on all extracted particles. This exceeds the recommendation for reporting under European Union’s Marine Strategy Framework Directive (MSFD) where it is recommended that a proportion (5–10%) of all samples should be routinely checked to confirm the accuracy of visual examination. All FT-IR results, regardless of measurement techniques, were compared to an extensive library of polymers to identify the polymer type of each particle. Field blank samples were performed on the vessel alongside sample collection. Procedural blanks were included in each batch under treatment to test for laboratory contamination. All equipment was cleaned with pre-filtered water and the use of plastic laboratory equipment was kept to a minimum. Filtration and processing were performed in laminar flow cabinet. In addition, all personnel wore cotton clothing and rinsed all equipment between samples. |
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| File identifier | 3fc2c370-ce1a-4b9f-becd-ac675431ffb2 | ||||||||||||||
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| Metadata language | English | ||||||||||||||
| Character set | UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646 | ||||||||||||||
| Hierarchy level | Dataset: Information applies to the dataset | ||||||||||||||
| Date stamp | 2025-02-14T00:00:00 | ||||||||||||||
| Metadata standard name | ISO 19115:2003/19139 | ||||||||||||||
| Metadata standard version | 1.0 | ||||||||||||||
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