Biodegradation kinetics of selected brominated flame retardants in aerobic and anaerobic soil.
The purpose of the present study was to investigate the biodegradation kinetics in aerobic and anaerobic soil of the following brominated flame retardants: 2,4,4'-tribromodiphenyl ether (BDE 28), decabromodiphenyl ether (BDE 209), tetrabromobisphenol A (TBBPA), 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane (TBECH), 2,4,6-tribromophenol (246BrPh), and hexabromobenzene (HxBrBz). For comparison, the biodegradation of the chlorinated compounds 2,4,4'-trichlorodiphenyl ether (CDE 28), 2,4,6-trichlorophenol (246ClPh), hexachlorobenzene (HxClBz), and 2,2',4,4',5,5'-hexachlorobiphenyl (PCB 153) was also assessed. In aerobic soil, BDE 209 showed no significant degradation during the test period, but concentrations of the other BFRs declined, with half-lives decreasing in the following order: BDE 28 > TBBPA > TBECH > HxBrBz > 246BrPh. Declines in almost the same order were observed in anaerobic soil: BDE 28, BDE 209 > TBBPA > HxBrBz > TBECH > 246BrPh.
Nyholm
Jenny Rattfelt
JR
Department of Chemistry, Umeå University, SE-901 87 Umeå, Sweden. jenny.rattfelt@chem.umu.se
Lundberg
Charlott
C
Andersson
Patrik L
PL
D000332:Aerobiosis; D000693:Anaerobiosis; D001673:Biodegradation, Environmental; D004784:Environmental Monitoring; D005411:Flame Retardants / Q000032:analysis*; D008401:Gas Chromatography-Mass Spectrometry; D006842:Hydrocarbons, Brominated / Q000032:analysis*; D007700:Kinetics; D012987:Soil / Q000032:analysis*; D012989:Soil Pollutants / Q000032:analysis*; D013548:Sweden
D005411:Flame Retardants; D006842:Hydrocarbons, Brominated; D012987:Soil; D012989:Soil Pollutants