title: Seasonal variation of polybrominated diphenyl ethers in PM2.5 aerosols over the East China Sea.
abstract: PM2.5 aerosol samples were collected from a receptor site in the East China Sea (ECS) to explore the seasonal variation and sources of polybrominated diphenyl ethers (PBDEs). The concentrations of BDE-209 and total 11 PBDEs without BDE-209 (∑11PBDEs) were 7.1±6.8 and 0.97±0.52 pg m(-3), respectively. A distinct seasonal variation was observed for both BDE-209 and ∑11PBDEs, that higher concentrations in winter and spring dominated by the northwesterly winds while lower concentrations in autumn and summer when the southeasterly winds prevailed, suggesting a significant role of continental outflow on the elevated concentrations of PM2.5-bound PBDEs in winter and spring. Besides, the strong dust storm could increase the load of PBDEs in continental outflow to the atmosphere over ECS. Differently, due to the absence of continental outflow in autumn and summer, the good correlations between BDE-209 and ∑11PBDEs implied a potential contribution of the low brominated PBDEs from photoproducts of BDE-209 in high temperature circumstance, while the good correlations of OC with BDE-209 and BDE-99 suggested a significant role of OC in the occurrence of PM2.5-bound PBDEs over ECS.
authors.affiliation: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Center for Atmospheric Chemistry Study, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Li
authors.affiliation: State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China. Electronic address: lintian@vip.gyig.ac.cn.
authors.forename: Tian
authors.initials: T
authors.lastname: Lin
authors.affiliation: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Center for Atmospheric Chemistry Study, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
authors.forename: Fengwen
authors.initials: F
authors.lastname: Wang
authors.affiliation: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Center for Atmospheric Chemistry Study, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.
authors.forename: Tianyi
authors.initials: T
authors.lastname: Ji
authors.affiliation: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Center for Atmospheric Chemistry Study, Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China. Electronic address: guozgg@fudan.edu.cn.
authors.forename: Zhigang
authors.initials: Z
authors.lastname: Guo
mesh_terms: D000336:Aerosols / Q000737:chemistry*; D000393:Air Pollutants / Q000032:analysis*; D001272:Atmosphere / Q000737:chemistry*; D002244:Carbon / Q000032:analysis; D002681:China; D004784:Environmental Monitoring / Q000379:methods / Q000706:statistics & numerical data*; D008401:Gas Chromatography-Mass Spectrometry; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D009792:Oceans and Seas; D052638:Particulate Matter / Q000032:analysis*; D012621:Seasons; D014919:Wind
chemical_list: C477694:2,2',4,4',5-brominated diphenyl ether; D000336:Aerosols; D000393:Air Pollutants; D055768:Halogenated Diphenyl Ethers; D052638:Particulate Matter; D002244:Carbon; C010902:decabromobiphenyl ether
keywords: Atmosphere; East Asian continental outflow; East China Sea; PBDEs; Sources