High Concentrations of Perfluoroalkyl Acids in Arctic Seawater Driven by Early Thawing Sea Ice

High Concentrations of Perfluoroalkyl Acids in Arctic Seawater Driven by Early Thawing Sea Ice

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 compa...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Environmental science & technology 2021-08, Vol.55 (16), p.11049-11059
Hauptverfasser: Garnett, Jack, Halsall, Crispin, Vader, Anna, Joerss, Hanna, Ebinghaus, Ralf, Leeson, Amber, Wynn, Peter M
Format: Artikel
Sprache:eng
Schlagworte:
Acids
Contaminants in Aquatic and Terrestrial Environments
Food chains
Food webs
Ice cover
Ice environments
Meltwater
Meteoric water
Perfluoro compounds
Perfluoroalkyl & polyfluoroalkyl substances
Perfluorooctanoic acid
Sea ice
Seawater
Snow
Surface water
Thawing
Water depth
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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 (
ISSN:0013-936X
1520-5851
1520-5851
DOI:10.1021/acs.est.1c01676