High Concentrations of Perfluoroalkyl Acids in Arctic Seawater Driven by Early Thawing Sea Ice.
Arctic
PFAS
chemical exposure
meltpond
sea ice
seawater
snow
Journal
Environmental science & technology
ISSN: 1520-5851
Titre abrégé: Environ Sci Technol
Pays: United States
ID NLM: 0213155
Informations de publication
Date de publication:
26 Jul 2021
26 Jul 2021
Historique:
entrez:
26
7
2021
pubmed:
27
7
2021
medline:
27
7
2021
Statut:
aheadofprint
Résumé
Poly- and perfluoroalkyl substances are synthetic chemicals that are widely present in the global environment including the Arctic. However, little is known about how these chemicals (particularly perfluoroalkyl acids, PFAA) enter the Arctic marine system and cycle between seawater and sea ice compartments. To evaluate this, we analyzed sea ice, snow, melt ponds, and near-surface seawater at two ice-covered stations located north of the Barents Sea (81 °N) with the aim of investigating PFAA dynamics in the late-season ice pack. Sea ice showed high concentrations of PFAA particularly at the surface with snow-ice (the uppermost sea ice layer strongly influenced by snow) comprising 26-62% of the total PFAA burden. Low salinities (<2.5 ppt) and low δ
Identifiants
pubmed: 34308632
doi: 10.1021/acs.est.1c01676
pmc: PMC8383270
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
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