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Title:Enrichment of legacy and emerging per- and polyfluoroalkyl substances in the sea surface microlayer
Author(s):Doane, Hannah
Subject(s):per- and polyfluoroalkyl substances
Abstract:Presented by: Hannah Doane – Graduate Student at MACRL, Co-authors: Ralph Mead, Jennifer Harfmann Abstract: The global transport of per- and polyfluoroalkyl substances (PFAS) is still widely unknown, particularly as it relates to air-sea exchange. This study focuses on the potential transport and enrichment of legacy and emerging PFAS (e.g. HFPO-DA) via the sea surface microlayer (SML), the interface between the hydrosphere and the atmosphere. Twenty-eight PFAS compounds – including four emerging PFAS – were quantified in the SML and the underlying sub-surface water (SSW) at two sites near a tidal bay on the eastern coast of North Carolina. The distribution of PFAS in both SML and SSW was dominated by PFOS with values of 0.9 to 30.3 ng/L and 1.6 to 5.1 ng/L respectively. Enrichment factors (CSML/CSSW) were highest for legacy PFAS (range: 0.2 to 19.6) and lowest for emerging PFAS (range: 0.7 to 7.0). This work emphasizes that the SML could be key in contributing to air-sea exchange and subsequent long-range transport of legacy PFAS compounds. Furthermore, as the number of emerging PFAS compounds continues to increase, the SML may be a critical boundary layer in understanding PFAS global transport. Biography: Hannah Doane is a graduate student at UNCW and her research is conducted through the MACRL group. She received her B.S. in Chemistry in 2019 and has been working with MACRL since 2017.
Issue Date:2021-04-27
Series/Report:2021 Emerging Contaminants in the Environment Conference (ECEC21)
Genre:Presentation / Lecture / Speech
Conference Paper / Presentation
Date Available in IDEALS:2021-04-26

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