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Sediment samples for chemical analyzes have been collected on voyages with the Norwegian Institute of Marine Research's own vessels under the auspices of several different projects, including the MAREANO programme. Multicorer, box sampler and Van Veen grab are used for sampling. Most organic pollutants have been analyzed at the Norwegian Institute of Marine Research's chemistry laboratories. Certain new organic pollutants are analyzed by the Norwegian Institute for Air Research (NILU). Results of all environmental geochemical investigations are collected in a common database together with inorganic pollutants and sediment characteristics from the Geological Survey of Norway (NGU). The data set is suitable for use on a scale of 500,000 - 10,000,000.
Geologi Havområder Habitater og biotoper Norway Digital Mareano MarineGrunnkart fellesDatakatalog Forurensning Kyst og fiskeri Natur Fjorder og kystnære havområder langs norskekysten Barentshavet Norskehavet Svalbard Norge Norge Mareano Chemistry Seabed enviroment Persistent organic poison Hydro carbon pollution Sediment Marine Grunnkart i Kystsonen infoMapAccessService
Map layer showing concentrations of perylene (µg/kg dry weight) in samples of surface sediments collected on the MAREANO cruise in the years 2006-2019, on monitoring cruises in the Barents Sea in 2003-2004, and for some stations in the Marine base map in the coastal zone in 2020.

Perylene is a type of polycyclic aromatic hydrocarbon (PAH). PAHs consist of two or more aromatic rings and have low water solubility and are therefore to a small extent dissolved in water bodies, but linked to various types of particles such as organic colloids or mineral particles. All PAHs are lipophilic (dissolve easily in fat) and can bioaccumulate (build up) in many marine organisms. Exposure to PAHs can lead to various damages, since several PAHs are toxic and carcinogenic. In marine sediments, PAH can be preserved for a long time, and trends in the supply of PAH can be studied by analyzing sediment cores.

Sediment samples for geochemical analyzes are taken primarily from areas with fine-grained sediments both in open marine depositional environments and coastal sea areas. Sample density varies depending on location. There is a greater sample density in fjords and coastal areas, while in open sea areas the sample density is lower.
Organic environmental poisons in marine sediments - Levels of Perylene WMS