Ozone-activated halogenation of mono- and dimethylbipyrrole in seawater

TitleOzone-activated halogenation of mono- and dimethylbipyrrole in seawater
Publication TypeJournal Article
Year of Publication2017
AuthorsKumar A., Borgen M., Aluwihare LI, Fenical W
JournalEnvironmental Science & Technology
Date Published2017/01
Type of ArticleArticle
ISBN Number0013-936X
Accession NumberWOS:000391346900065
Keywordsabiotic source; air-quality; climate-change; dimethyl bipyrroles; dissolved organic-matter; environmental-samples; humic substances; organohalogens; products; water

Polyhalogenated N-methylbipyrroles of two different structure classes have been detected worldwide in over 100 environmental samples including seawater, bird eggs, fish, dolphin blubber, and in the breast milk of humans that consume seafood. These molecules are concentrated in the fatty tissues in comparable abundance to some of the most important anthropogenic contaminants, such as the halogenated flame-retardants and pesticides. Although the origin of these compounds is still unknown, we present evidence that the production of these materials can involve the direct ozone activated seawater halogenation of N-methylbipyrrole precursors. This observation shows that environmental polyhalogenated bipyrroles can be produced via an abiotic process, and implies that the ozone activated halogenation of a variety of natural and anthropogenic seawater organics may be a significant process occurring in surface ocean waters.

Short TitleEnviron. Sci. Technol.
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