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Powers, L.C.* ; Schijf, J.* ; Schmitt-Kopplin, P. ; Gonsior, M.*

Halogenated organic compounds: A massive halogen reservoir and an intriguing component of the marine dissolved organic matter pool.

Geophys. Res. Lett. 53:119062 (2026)
Verlagsversion Forschungsdaten DOI
Open Access Gold
Creative Commons Lizenzvertrag
Biogeochemical reactions produce volatile halocarbons and semi- to nonvolatile dissolved organic halogens (DOX) in marine systems. The former has a large influence on atmospheric chemistry, but little is known about DOX. Here, we present depth profiles of dissolved organic bromine (DOBr) and -iodine (DOI) isolated from the Central North Atlantic and the Central North Pacific. DOX ranged from ∼5 to 11 nM in the surface and decreased to ∼1 to 7 nM below 1,500 m. Relative to DOI, DOBr is elevated and more stable at depth. Moreover, 92 individual DOBr molecular ions were identified by high-resolution mass spectrometry for the first time in seawater using a solid phase extraction/sequential elution technique. Similar DOBr ions with an oxygen-to-carbon ratio of 0.35 and a hydrogen-to-carbon ratio of 1.3 were present throughout the water column. Thus, deep ocean DOBr may be a hitherto overlooked component of marine refractory organic matter.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Bats ; Dissolved Organic Halogens ; Dissolved Organic Matter ; Hot; Molecular Formula Assignment; Time-series Station; Iodine Speciation; Chesapeake Bay; Ocean; Bromine; Waters; Sea; Spectrometry; Chemistry
ISSN (print) / ISBN 0094-8276
e-ISSN 1944-8007
Zeitschrift Geophysical Research Letters
Quellenangaben Band: 53, Heft: 1, Seiten: , Artikelnummer: 119062 Supplement: ,
Verlag Wiley
Verlagsort Hoboken, NJ
Begutachtungsstatus Peer reviewed
Institut(e) Research Unit BioGeoChemistry and Analytics (BGC)
Förderungen National Science Foundation