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Natural sunlight and sun simulator photolysis studies of tetra- to hexa-brominated diphenyl ethers in water using solid-phase microextraction

AuthorsSánchez-Prado, Lucía; Lores, Marta; Llompart, María; García-Jares, Carmen; Bayona Termens, Josep María; Cela, Rafael
KeywordsSolid-phase microextraction
Brominated diphenyl ethers
Flame retardants
Water analysis
Polybrominated dibenzofurans
Issue Date7-Jul-2006
CitationJournal of Chromatography A 1124(1-2): 157-166 (2006)
AbstractPhoto-solid-phase microextraction (photo-SPME) is combined for the first time with natural and simulated sunlight to study the photochemical behaviour of environmental concerning tetra- to hexa-brominated diphenyl ethers. The sunlight photodegradation kinetics of five brominated diphenyl ethers (BDE 47, BDE 100, BDE 99, BDE 154 and BDE 153) has been studied. These BDEs are the most abundant congeners in penta-BDE commercial formulations used as flame-retardants and are considered among the most toxic ones. The five studied BDEs were photolytically labile. The detected photodegradation products include more stable lower brominated diphenyl ethers and polybrominated dibenzofurans (PBDFs). The photoformation and decay kinetics of these photoproducts were also monitorized by photo-SPME. Aqueous photodegradation studies have also been carried out. In this case, SPME is only used as the extraction technique. Obtained results in the aqueous photodegradation experiments were compared with those obtained in photo-SPME experiments.
Description10 pages, 6 figures, 2 tables.-- PMID: 16824536 [PubMed].-- Printed version published Aug 18, 2006.-- Issue title: ExTech 2006 - 8th International Symposium on Advances in Extraction Techniques (York, UK, Feb 6-8, 2006).
Publisher version (URL)http://dx.doi.org/10.1016/j.chroma.2006.06.037
Appears in Collections:(IDAEA) Artículos
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