725a196f-4d98-449a-94e9-a67bc8a83bd7 Aarhus University, Department of Bioscience, Marine Ecology Roskilde 399 Frederiksborgvej P.O. Box 358 Roskilde DK-4000 Denmark http://bios.au.dk/en/ web site 2026-04-02T00:00:00 ISO 19115:2003/19139 1.0 WGS 1984 Microplastic in sediment from Denmark 2012-2013 2013-09-23 2019-05-24 725a196f-4d98-449a-94e9-a67bc8a83bd7 This study is a first attempt in Denmark on assessing the presence of microplastics in our open & coastal waters from Baltic to North Sea. The occurrence and impact of microplastics have in the Danish initial assessment for EU’s Marine Strategy Framework Directive (MSFD) been identified as a relevant indicator for describing “Good Environmental Status” (GES) for descriptor 10 on Marine Litter. Microplastic particles in marine waters, which consist of synthetic polymer materials, origin mainly from secondary microplastics, i.e. fragments of litter like solid waste, fishing gear, paint flakes etc. from either sea- or land based sources. Primary microplastics (engineered) are not expected to be as common as secondary microplastics. Microplastics can origin from both local sources and from long-range transport with ocean or air currents. Aarhus University,Danish Centre for Environment and Energy Frederiksborgvej 399 Postboks 358 Roskilde DK_4000 Denmark http://dce.au.dk/en/ web site Aarhus University, Department of Bioscience, Marine Ecology Roskilde 399 Frederiksborgvej P.O. Box 358 Roskilde DK-4000 Denmark http://bios.au.dk/en/ web site Oceanographic geographical features GEMET - INSPIRE themes, version 1.0 2008-06-01 geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme Skagerrak North Sea Baltic Sea The Sound Storebaelt Lillebaelt Kattegat Wadden Sea SeaVoX salt and fresh water body gazetteer 2024-01-15 SeaVoX salt and fresh water body gazetteer Rock and sediment physical properties SeaDataNet Agreed Parameter Groups 2023-07-04 SeaDataNet Agreed Parameter Groups unconsolidated sediment corers SeaDataNet device categories 2024-01-16 SeaDataNet device categories Unspecified box corer SeaVoX Device Catalogue 2024-01-29 SeaVoX Device Catalogue Dissolved organic carbon concentrations in sediment pore waters Micro-litter in sediments Sediment water content, porosity and surface area SeaDataNet Parameter Discovery Vocabulary 2023-12-12 SeaDataNet Parameter Discovery Vocabulary CRUISE SUMMARY REPORT INVENTORY (CSR) 2023-10-02 ship SeaVoX Platform Categories 2024-01-16 SeaVoX Platform Categories ICES Platform Codes 2024-01-16 ICES Platform Codes SYMBIOSE project EUROPEAN DIRECTORY OF MARINE ENVIRONMENTAL RESEARCH PROJECTS (EDMERP) 2020-06-05 Delimited Text or Plaintext MEDIN data format categories 2024-01-29 MEDIN data format categories World Register of Marine Species (WORMS) 2024-02-07 SeaDataNet Measurement Periodicity Categories 2024-01-29 SeaDataNet Measurement Periodicity Categories BODC-approved data storage units (Spatial Unit) 2023-10-12 BODC-approved data storage units (Spatial Unit) BODC-approved data storage units (Vertical Unit) 2023-10-12 BODC-approved data storage units (Vertical Unit) no limitations to public access Conditions for access and use apply ODC-By Oceans 2012-10-08 2013-04-25 6.3510554617731 13.250469524273 53.556805562622 57.88289773916 Delimited 1 Text or Plaintext 1 https://cloud.emodnet-ingestion.eu/index.php/s/mREGgrSqEJfPetg WWW:DOWNLOAD-1.0-http--download WWW:LINK-1.0-http--link COMMISSION REGULATION (EC) No 1205/2008 of 3 December 2008 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards metadata 2010-12-08 See the referenced specification false Corrigendum to INSPIRE Metadata Regulation published in the Official Journal of the European Union, L 328, page 83 2010-12-08 See the referenced specification false Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 See the referenced specification false Sampling of sediments have been coordinated with the national monitoring (NOVANA) of contaminants in Denmark in 2012 and an additional sampling campaign in 2013. In addition to data for various contaminants groups in sediments, also data on general sediment characteristics are generated on the same samples. |Microplastic particles have been isolated from a100g sediment sample, which has been digested for 2 hours with 200 ml solution of KOH and NaOCl for reducing the amounts of natural organic materials. The remaining sample was when washed two times with a saturated NaCl solution. Particles were collected using sediment test sieves in following size fractions I) 38 µm – 1 mm , II) 1 – 5 mm and III) >5 mm Particles, regarded as of synthetic origin, were with microscope isolated, counted and characterized according to their colour and shape/structure, i.e. as fibres, flakes, granules or spherules. FT-IR spectroscopy was applied to identify specific polymers in some selected flakes and granules with size larger than 0.5 x 0.5mm, i.e. fibres were too small to study. Particles of the polymers polypropylene, acrylate, and polyester/alkyd were identified. About 50% of the selected particles could with our FTIR database not be matched on synthetic materials. Normalisation to adequate sediment characters can reduce the variability caused by natural heterogeneity between samples and increase the power of identifying more or less affected areas. Strong relationships between the content of microplastics and both %TOC and fine fraction (<63µm) in sediments were found throughout the area supporting that microplastic will accumulate in sedimentary depositional areas – i.e. with parallels to organic pollutants sorped to organic materials. Strong correlations were also established to PAH and to lesser extent to alkylphenols & phthalates in sediments probably due to co-variation with sources and TOC.