ArticleACS earth & space chemistry2026
Distinct Lipid Compositions in Seawater and the Sea Surface Microlayer Measured with Liquid Chromatography and High-Resolution Mass Spectrometry.
Article in ACS earth & space chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The sea surface microlayer (SML) plays an important role in the air-sea exchange of gases and particles. Surfactants accumulate at and modulate the properties of the SML, but specific chemical and physical properties driving variability in their distribution in the SML remain unclear. Lipids are a type of surfactant in the ocean and are biomarkers for dissolved organic matter (DOM) sources. We collected paired SML and associated subsurface seawater (SSW) samples over three time points in the North Atlantic Ocean in September 2022 and used liquid chromatography and high-resolution mass spectrometry (LC-MS) to identify 163 and 189 lipids in the SML and SSW, respectively. Of those, just 33 were identified in both layers. Lipids were classified as glycolipids, phospholipids, triglycerols, diacylglycerides, monoacylglycerides, and betaine lipids, as well as lipid byproducts, including free fatty acids and polyunsaturated aldehydes. Enrichment factors for each lipid class show overall enrichment in the SML (average of 1.68 ± 1.43 for all classes (
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