Title of Paper:Atmospheric deposition of PBDEs and DPs in Dongjiang River Basin, South China

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Date of Publication:2017-02-01

Journal:ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH

Included Journals:SCIE、PubMed

Volume:24

Issue:4

Page Number:3882-3889

ISSN No.:0944-1344

Key Words:PBDEs; DPs; Atmospheric deposition; Seasonal variation; Spatial variation

Abstract:The atmospheric deposition fluxes of polybrominated diphenyl ethers (PBDEs) and Dechlorane Plus (DPs) in Dongjiang River Basin of the Pearl River Delta in South China were investigated during winter and summer, respectively. The total deposition fluxes varied from 4.74 to 27.0 ng/m(2)/day for PBDEs and 8.77 to 206 ng/m(2)/day for DPs, respectively. The fractions of anti-DP to the total DPs (f(anti)) varied from 0.28 to 0.63 (mean = 0.43 +/- 0.06), i.e., generally lower than those in commercial products, which might be attributed to the different environmental fates of the two isomers. Significant seasonal and spatial variations of PBDEs and DPs were observed. The deposition fluxes in summer were generally higher than those in winter, which may be due to the relatively high temperature and rainfall in summer under the influence of prevailing subtropical monsoon climate. Moreover, high deposition fluxes of PBDEs and DPs in urban areas and significant urban/rural gradient implied that local industrial activities in the urban areas were primary sources, which were further confirmed by the results of principal component analysis. The highest deposition of PBDE and DP fluxes was found at different sampling sites, suggesting PBDEs and DPs may be derived from different industries or products.