Date (Creation)

2016-01-01

Date (Revision)

Date (Publication)

2020-11-16

Date (Publication)

2021-09-20

Citation identifier

e4811c38-6c6f-4a99-8a26-654cfad18e41

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Aarhus University,Danish Centre for Environment and Energy			Originator of Dataset
Aarhus University, Department of Bioscience, Marine Ecology Roskilde			Author

GEMET - INSPIRE themes, version 1.0

• Oceanographic geographical features

SeaVoX salt and fresh water body gazetteer

• Skagerrak
• North Sea
• Baltic Sea
• The Sound
• Storebaelt
• Lillebaelt
• Kattegat
• Wadden Sea

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
• Micro-litter in sediments
• Sediment water content, porosity and surface area

SeaVoX Platform Categories

• airship

MEDIN data format categories

• Delimited
• Text or Plaintext

Keywords

Access constraints

Other restrictions

Other constraints

no limitations to public access

Use limitation

Conditions for access and use apply

Use constraints

Other restrictions

Other constraints

ODC-By

Language

English

Character set

UTF8

Topic category

• Oceans

Begin date

2015-10-24

End date

2015-12-14

Unique resource identifier

WGS 1984

Distribution format

Name	Version
Delimited	1
Text or Plaintext	1

OnLine resource

Protocol	Linkage	Name
WWW:DOWNLOAD-1.0-http--download	https://cloud.emodnet-ingestion.eu/index.php/s/0NAsdcv0mURA7wl
WWW:LINK-1.0-http--link	www.emodnet-chemistry.eu

Hierarchy level

Dataset

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

Metadata

File identifier

e4811c38-6c6f-4a99-8a26-654cfad18e41 XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2025-05-09T00:00:00

Metadata standard name

ISO 19115:2003/19139

Metadata standard version

1.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Aarhus University, Department of Bioscience, Marine Ecology Roskilde			Point of contact