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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 Habitater og biotoper Havområder Mareano MarineGrunnkart fellesDatakatalog Natur Kyst og fiskeri Forurensning 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 summed concentrations of seven PFAS (per- and polyfluorinated alkylated substances) (µg/kg dry weight) in samples of surface sediments collected on the MAREANO cruise and for some stations in the Marine base map in the coastal zone in 2020-21.

PFAS are some of the most persistent environmental toxins that exist. They are considered so-called emerging contaminants, which in recent decades have been considered to pose a potential environmental problem. There is a lack of regulation, nationally and internationally, for most of these substances, and it is therefore important to be able to demonstrate the extent of the problem as a basis for achieving proper use and handling of the substances. The problem is greatest primarily in stressed coastal areas near ports and industrial areas, but the open sea can also be affected by the new environmental toxins through long-hauled inputs. The Norwegian Environment Agency has condition classes for some of these compounds. Since 2016, the MAREANO program has collected data on PFAS.
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 - Sum 7PFAS WMS