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Liu, Aifeng; Zhao, Zongshan; Qu, Guangbo; Shen, Zhaoshuang; Shi, Jianbo; Jiang, Guibin
Environmental pollution (1987), December 2018, 2018-Dec, 2018-12-00, Letnik: 243, Številka: Pt BJournal Article
Although the abiotic and biotic transformation/degradation (T/D) processes of tetrabromobisphenol A (TBBPA) have been widely investigated in model experiments, few reviews have focused on these processes along with their metabolites or degradation products. In this paper, we summarize the current knowledge on the T/D of TBBPA and its derivatives, including abiotic and biotic T/D strategies/conditions, mechanisms, metabolites and environmental occurrences. Various treatments, such as pyrolysis, photolysis, chemical reactions and biotransformation, have been employed to study the metabolic mechanism of TBBPA and its derivatives and to remediate associated contaminated environments. To date, more than 100 degradation products and metabolites have been identified, dominated by less brominated compounds such as bisphenol A, 2,6-dibromo-4-isopropylphenol, 2,6-dibromo-4-hydroxyl-phenol, 2,6-dibromophenol, isopropylene-2,6-dibromophenol, 4-(2-hydroxyisopropyl)-2,6-dibromophenol, etc. It can be concluded that the T/D of TBBPA mainly takes place through debromination and β-scission. In some environmental media and human and animal tissues, brominated metabolites, glucoside and sulfate derivatives are also important T/D products. Here, the T/D products of TBBPA and its derivatives have been most comprehensively presented from the literature in recent 20 years. This review will enhance the understanding of the environmental behaviors of TBBPA-associated brominated flame retardants along with their ecological and health risks. Display omitted •Transformation/degradation (T/D) of TBBPA is most comprehensively reviewed.•T/D is involved in thermo-treatment, chemical reaction, microbe, organism, etc.•Debromination and β-scission are the main T/D pathways.•More than 100 intermediates or metabolites have been identified in recent years.•Fate and risk of metabolites are rarely studied for the lack of purity standards. T/D of TBBPA and its derivatives, including strategies/conditions, mechanism, metabolites and environmental occurrence is most systematically reviewed from the literature over the past 20 years.
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