POLYBROMINATED DIPHENYL ETHERS IN SOILS OF PEARL RIVER DELTA,CHINA:CONCENTRATION LEVELS,COMPOSITIONAL PROFILES AND FATE

摘要

Polybrominated diphenyl ethers(PBDEs)are a group of additive flame-retardants that have attracted considerable concern in recent years due to their increasing detectable frequencies and levels in environmental matrix and biota(including humans).PBDEs in soils have not been widely investigated.Moreover,soils are a major reservoir and sink for nonpolar organic contaminants(NOCs)due to their large capacity for these compounds.Various factors such as input sources,transfer and transfomation,soil properties such as soil organic matter,chemical property and environmental variables can influence the behavior of NOCs in the soil environment.