Show simple item record

dc.contributor.authorAzad, Atabak Mahjour
dc.contributor.authorFrantzen, Sylvia
dc.contributor.authorBank, Michael
dc.contributor.authorJohnsen, Ingrid Askeland
dc.contributor.authorTessier, Emmanuel
dc.contributor.authorAmouroux, David
dc.contributor.authorMadsen, Lise
dc.contributor.authorMåge, Amund
dc.date.accessioned2019-08-22T12:31:36Z
dc.date.available2019-08-22T12:31:36Z
dc.date.issued2019-06-01
dc.identifier.citationMahjour Azad AA, Frantzen S, Bank M, Johnsen IA, Tessier E, Amouroux D, Madsen L, Måge A. Spatial distribution of mercury in seawater, sediment, and seafood from the Hardangerfjord ecosystem, Norway. Science of the Total Environment. 2019;667:622-637eng
dc.identifier.urihttp://hdl.handle.net/1956/20707
dc.description.abstractHardangerfjord is one of the longest fjords in the world and has historical mercury (Hg) contamination from a zinc plant in its inner sector. In order to investigate the extent of Hg transferred to abiotic and biotic ecosystem compartments, Hg and monomethylmercury (MeHg) concentrations were measured in seawater, sediment, and seafood commonly consumed by humans. Although total mercury in seawater has been described previously, this investigation reports novel MeHg data for seawater from Norwegian fjords. Total Hg and MeHg concentrations in seawater, sediment, and biota increased towards the point source of pollution (PSP) and multiple lines of evidence show a clear PSP effect in seawater and sediment concentrations. In fish, however, similar high concentrations were found in the inner part of another branch adjacent to the PSP. We postulate that, in addition to PSP, atmospheric Hg, terrestrial run-off and hydroelectric power stations are also important sources of Hg in this fjord ecosystem. Hg contamination gradually increased towards the inner part of the fjord for most fish species and crustaceans. Since the PSP and the atmospheric Hg pools were greater towards the inner part of the fjord, it is not entirely possible to discriminate the full extent of the PSP and the atmospheric Hg contribution to the fjord food web. The European Union (EU) Hg maximum level for consumption was exceeded in demersal fish species including tusk (Brosme brosme), blue ling (Molva dypterygia) and common ling (Molva molva) from the inner fjord (1.08 to 1.89 mg kg−1 ww) and from the outer fjord (0.49 to 1.07 mg kg−1 ww). Crustaceans were less contaminated and only European lobster (Homarus gammarus) from inner fjord exceeded the EU limit (0.62 mg kg−1 ww). Selenium (Se) concentrations were also measured in seafood species and Se-Hg co-exposure dynamics are also discussed.eng
dc.language.isoengeng
dc.publisherElseviereng
dc.rightsAttribution CC BYeng
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/eng
dc.subjectMercuryeng
dc.subjectBioaccumulationeng
dc.subjectFjordseng
dc.subjectSeafood safetyeng
dc.subjectSpeciationeng
dc.subjectNorwayeng
dc.titleSpatial distribution of mercury in seawater, sediment, and seafood from the Hardangerfjord ecosystem, Norwayeng
dc.typeJournal articleeng
dc.date.updated2019-06-21T07:49:34Z
dc.rights.holderCopyright 2019 The Author(s)eng
dc.type.versionpublishedVersioneng
bora.peerreviewedPeer reviewedeng
dc.type.documentJournal article
dc.identifier.cristinID1703411
dc.identifier.doi10.1016/j.scitotenv.2019.02.352eng
dc.source.issn0048-9697eng
dc.source.issn1879-1026eng
dc.relation.journalScience of the Total Environment


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

Attribution CC BY
Except where otherwise noted, this item's license is described as Attribution CC BY