title: [Levels and sources of gaseous polybrominated diphenyl ethers in air over the northern South China Sea].
abstract: A total of 32 air samples collected during a Shiyan III voyage over the northern South China Sea (SCS) were analyzed for polybrominated diphenyl ethers (PBDEs) by gas chromatography/mass spectrometry. The concentrations of sigma 7 PBDEs ranged from 0.07 to 35.9 pg x m(-3). The sigma 7 PBDEs were dominated by tetra-(BDE-47) and penta-(BDE-99 and -100) components, which accounted for 51.5% and 36.9%, respectively. This result indicated that the widely used commercial penta-BDE product was the original source. The higher concentrations of PBDEs were monitored close to the coastline of the South China and Philippine, while the lower concentrations were found over the SCS adjacent to central coast of Vietnam. Back trajectory analysis showed that the high PBDE concentrations observed in air over the northern SCS may be related to the continental pollutant outflows from the southeast coast of China, especially the Pearl River Delta, Taiwan and Philippine, by prevailing northeast wind transport.
authors.affiliation: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. lqlblue@yahoo.com.cn
authors.forename: Qi-lu
authors.initials: QL
authors.lastname: Li
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Xiang
authors.initials: X
authors.lastname: Liu
authors.forename: Wei-hai
authors.initials: WH
authors.lastname: Xu
authors.forename: Gan
authors.initials: G
authors.lastname: Zhang
mesh_terms: D000393:Air Pollutants / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D005740:Gases / Q000032:analysis; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D009792:Oceans and Seas
chemical_list: C477694:2,2',4,4',5-brominated diphenyl ether; D000393:Air Pollutants; D005740:Gases; D055768:Halogenated Diphenyl Ethers; C511295:2,2',4,4'-tetrabromodiphenyl ether