Arctic Antarctic and Alpine Research, Journal Year: 2024, Volume and Issue: 56(1)

Published: Aug. 9, 2024

Polybrominated diphenyl ethers (PBDEs) used in consumer goods and flame retardants have been replaced by alternatives such as tetrabromobisphenol A (TBBPA). TBBPA does not readily undergo global distal transport, but local sources still threaten aquatic ecosystems. We studied the photofate of with a specific focus on how Arctic-derived dissolved organic matter (DOM) affects its reaction kinetics, degradation pathways formation photoproducts artificial natural sunlight. Our results corroborate earlier studies that reveal pH-dependent trend TBBPA's direct photolysis longer times for acidic form. DOM either plays no role or it slightly reduces rate photodegradation via inner-filter effects. Photolysis experiments conducted at our Arctic field site, Toolik Lake Field Station, revealed slower than anticipated degradation, which magnified half-life significantly during in-lake experiments. Importantly, composition was found to influence type distribution formed, suggests different occur presence DOM. These findings provide valuable insights into intricate interplay environmental variables govern fate sunlit ecosystems globally.

Language: Английский