SwePub
Sök i LIBRIS databas

  Utökad sökning

onr:"swepub:oai:DiVA.org:liu-73971"
 

Sökning: onr:"swepub:oai:DiVA.org:liu-73971" > Manufacturing Origi...

  • Benskin, JonathanUniversity of Alberta, Canada (författare)

Manufacturing Origin of Perfluorooctanoate (PFOA) in Atlantic and Canadian Arctic Seawater

  • Artikel/kapitelEngelska2012

Förlag, utgivningsår, omfång ...

  • 2011-12-21
  • American Chemical Society (ACS),2012
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:liu-73971
  • https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-73971URI
  • https://doi.org/10.1021/es202958pDOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

Ingår i deldatabas

Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • funding agencies|Environment Canada||NSERC||Alberta Ingenuity New Faculty||Alberta Ingenuity graduate student scholarship||
  • The extent to which different manufacturing sources and long-range transport pathways contribute to perfluorooctanoate (PFOA) in the world’s oceans, particularly in remote locations, is widely debated. Here, the relative contribution of historic (i.e., electrochemically fluorinated) and contemporary (i.e., telomer) manufacturing sources was assessed for PFOA in various seawater samples by an established isomer profiling technique. The ratios of individual branched PFOA isomers were indistinguishable from those in authentic historic standards in 93% of the samples examined, indicating that marine processes had little influence on isomer profiles, and that isomer profiling is a valid source apportionment tool for seawater. Eastern Atlantic PFOA was largely (83−98%) of historic origin, but this decreased to only 33% close to the Eastern U.S. seaboard. Similarly, PFOA in the Norwegian Sea was near exclusively historic, but the relative contribution decreased to ∼50% near the Baltic Sea. Such observations of contemporary PFOA in coastal source regions coincided with elevated concentrations, suggesting that the continued production and use of PFOA is currently adding to the marine burden of this contaminant. In the Arctic, a spatial trend was observed whereby PFOA in seawater originating from the Atlantic was predominantly historic (up to 99%), whereas water in the Archipelago (i.e., from the Pacific) was predominantly of contemporary origin (as little as 17% historic). These data help to explain reported temporal and spatial trends from Arctic wildlife biomonitoring, and suggest that the dominant PFOA source(s) to the Pacific and Canadian Arctic Archipelago are either (a) from direct emissions of contemporary PFOA via manufacturing or use in Asia, or (b) from atmospheric transport and oxidation of contemporary PFOA-precursors.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Ahrens, LutzInstitute for Coastal Research, Geesthacht, Tyskland (författare)
  • Muir, DerekEnvironment Canada, Kanada (författare)
  • Scott, BrianEnvironment Canada, Kanada (författare)
  • Spencer, ChristineEnvironment Canada, Kanada (författare)
  • Rosenberg, BrunoDepartment of Fisheries and Oceans, Canada (författare)
  • Tomy, GreggDepartment of Fisheries and Oceans, Canada (författare)
  • Kylin, HenrikLinköpings universitet,Tema vatten i natur och samhälle,Filosofiska fakulteten(Swepub:liu)henky02 (författare)
  • Lohmann, RainerUniversity of Rhode Island, USA (författare)
  • Martin, JonathanUniversity of Alberta, Canada (författare)
  • University of Alberta, CanadaInstitute for Coastal Research, Geesthacht, Tyskland (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Environmental Science and Technology: American Chemical Society (ACS)46:2, s. 677-6850013-936X1520-5851

Internetlänk

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy