Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 49, Issue 11, Pages 6683-6690Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.5b00382
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Funding
- National Natural Science Foundation of China [41076040, 41230858]
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The photolysis of tetrabromobisphenol A (TBBPA) in ape:ills solution under simulated solar light irradiation was studied under different conditions to find out mechanisms and pathways that control the transformation of TBBPA during photoreaction. Particular attention was paid to the identification Of intermediates and elucidation of the photolysis mechanism of TBBPA by UPLC, LC/MS, FT-ICR-MS, NMR, ESR, and stable isotope techniques (C-13 and O-18). The results showed that the photolysis of TBBPA could occur under simulated solar light irradiation in both aerated and deaerated conditions. A magnetic isotope effect (MIE)-hydrolysis transformation was proposed as the predominant pathway for TBBPA photolysis in both cases. 2,6-Dibrornophenol and two isopropylphenol derivatives were identified as photooxidation products of TBBPA by singlet oxygen. Reductive debromination products. tribromobisphenol A and dibromobisphenol A were also observed This is the first report Of a photolysis pathway involving the formation of hydroxyl-tribromubigphenol A.
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