Title of article :
Natural sunlight and sun simulator photolysis studies of tetra- to hexa-brominated diphenyl ethers in water using solid-phase microextraction
Author/Authors :
Sلnchez-Prado، نويسنده , , Lucيa and Lores، نويسنده , , Marta and Llompart، نويسنده , , Maria and Garcيa-Jares، نويسنده , , Carmen and Bayona، نويسنده , , Josep M. and Cela، نويسنده , , Rafael، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2006
Abstract :
Photo-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.
Keywords :
Degradation , Photolysis , Solid-phase microextraction , Brominated diphenyl ethers , Flame retardants , GC–MS , Water analysis , Polybrominated dibenzofurans
Journal title :
Journal of Chromatography A
Journal title :
Journal of Chromatography A