Chance, Rosemary Jane orcid.org/0000-0002-5906-176X, Hamilton, Jacqueline Fiona orcid.org/0000-0003-0975-4311, Carpenter, Lucy Jane orcid.org/0000-0002-6257-3950 et al. (3 more authors) (2018) Water-Soluble Organic Composition of the Arctic Sea Surface Microlayer and Association with Ice Nucleation Ability. Critical Reviews in Environmental Science and Technology. pp. 1817-1826. ISSN 1547-6537
Abstract
Organic matter in the sea surface microlayer (SML) may be transferred to the atmosphere as sea spray and hence influence the composition and properties of marine aerosol. Recent work has demonstrated that the SML contains material capable of heterogeneously nucleating ice, but the nature of this material remains largely unknown. Water-soluble organic matter was extracted from SML and underlying seawater from the Arctic and analyzed using a combination of mass spectrometric approaches. High performance liquid chromatography-ion trap mass spectrometry (LC-IT-MS), and Fourier transform ion cyclotron resonance MS (FT-ICR-MS), showed seawater extracts to be compositionally similar across all stations, whereas microlayer extracts had a different and more variable composition. LC-IT-MS demonstrated the enrichment of particular ions in the microlayer. Ice nucleation ability (defined as the median droplet freezing temperature) appeared to be related to the relative abundances of some ions, although the extracts themselves did not retain this property. Molecular formulas were assigned using LC-quadrupole time-of-flight MS (LC-TOF-MS2) and FT-ICR-MS. The ice nucleation tracer ions were associated with elevated biogenic trace gases, and were also observed in atmospheric aerosol collected during the summer, but not early spring suggesting a biogenic source of ice nuclei in the Arctic microlayer.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 American Chemical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Keywords: | Sea surface microlayer,Ice nuclei,Mass spectrometry,Arctic |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Funding Information: | Funder Grant number NATURAL ENVIRONMENT RESEARCH COUNCIL NE/I028769/1 |
Depositing User: | Pure (York) |
Date Deposited: | 23 Feb 2018 15:30 |
Last Modified: | 16 Dec 2024 00:08 |
Published Version: | https://doi.org/10.1021/acs.est.7b04072 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1021/acs.est.7b04072 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:127892 |
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