Huyen Thu Vu and Toan Duc Vu
Abstract
The study presents the evaluation results of typical PBDEs (Polybrominated Diphenyl Ethers) belonging to the PBDE family in sediment samples from West Lake, Hanoi. During the investigation of sediment quality, four methods were employed: survey method, data collection method, sampling and sample analysis method, and risk assessment method. PBDE pollution in the sediment of West Lake, Hanoi, has occurred on a wide scale. The concentration of ?7PBDE ranges from 8.72 to 39.24 ?g/kg, with Hepta-BDEs being the dominant percentage in the sediment samples (averaging 60%). Penta BDE at most locations is at a medium-risk level, with the highest concentration being 0.054 ?g/kg and the lowest at 0.0002 ?g/kg (0.01 < RQ ? 0.1). This indicates that the physico-chemical properties and transformation potential in the environment are reflected through the percentage of PBDEs.