EMODnet Product Catalogue
Microplastic-like particles in sediments from Danish waters 2015
Contents and composition of microplastic-like particles have been analysed in ten sediment samples from the Danish part of the open North Sea and in the Inner Danish waters in 2015. The contents of microplastic-like particles in the size range 100-5000 µm were determined to be in the range of 192-3511 particles per kg dry weight sediment, dominated by blue and black coloured particles, mainly as fibres, and particle sizes < 300 µm were dominating.
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| Date | 2016-01-01 |
|---|---|
| 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 | 2020-11-16 |
| Date type | Publication: Date identifies when the resource was issued |
| Date | 2021-09-20 |
| Date type | Publication: Date identifies when the resource was issued |
| Unique resource identifier | e4811c38-6c6f-4a99-8a26-654cfad18e41 |
Point of contact
| Organisation name | Aarhus University,Danish Centre for Environment and Energy |
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| Delivery point | Frederiksborgvej 399 Postboks 358 |
| City | Roskilde |
| Postal code | DK_4000 |
| Country | Denmark |
| Linkage | http://dce.au.dk/en/ |
| Role | Originator of Dataset: Originator of Dataset |
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 |
Skagerrak
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North Sea
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Baltic Sea
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The Sound
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Storebaelt
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Lillebaelt
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Kattegat
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Wadden Sea
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| SeaDataNet Agreed Parameter Groups | Rock and sediment physical properties |
| SeaDataNet device categories | unconsolidated sediment corers |
| SeaVoX Device Catalogue | Unspecified box corer |
| SeaDataNet Parameter Discovery Vocabulary |
Dissolved organic carbon concentrations in sediment pore waters
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Micro-litter in sediments
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Sediment water content, porosity and surface area
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| SeaVoX Platform Categories | airship |
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Text or Plaintext
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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 |
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Reference System Information
| Anchor | WGS 1984 |
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| Hierarchy level | Dataset: Information applies to the dataset |
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Lineage
| Statement | 10 sediment samples from the North Sea consisting of ~50 ml (~100 g wet weight (ww)) were first chemically digested by two hours of thoroughly shaking with 100 ml of a solution (consisting of ~3 % potassium hydroxide, ~1 % potassium tripolyphosphate, ~1 % potassium silicate and ~7 % sodium hypochlorite, so dominant fractions of natural organic matter were decomposed. Similar treatment of different types of common plastic materials showed no larger external changes in the particle structure. This was followed density, separation by adding 100 ml of saturated saline solution, followed by ten minutes of shaking and consequently five minutes of ultrasonic treatment. The particles in the samples were allowed to settle for five minutes after each of the two steps. Pooled supernatant was filtered into six size fractions, i.e. 20-38, 38-100, 100-300, 300-1000 and 1000-5000 µm, by being flushed with filtered freshwater through the sediment test sieves (Retsch) placed on top of each according to decreasing mesh size. For each size fraction, particles retained on the test sieves and regarded as of synthetic origin were visually identified as microplastic-like particles based on their relatively homogenous texture and structure using a stereo microscope (20-50x magnification). In size fraction 20-38 mm and 38 -100 µm only fibres longer than >100 µm were counted and these data are in the data sheet aggregated with data for the size fraction 100 – 300 µm. For quality assurance of the analyses, all glassware was cleaned and baked in the oven at 450 °C prior to the start of the microplastic analysis, and all the reagents were filtered using 20 µm mesh sizes. Additionally, the risk for airborne particulate contamination was controlled every day of sample analysis |
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| File identifier | e4811c38-6c6f-4a99-8a26-654cfad18e41 | ||||||||||||||
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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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