标題: Atmospheric deposition and air-soil exchange of polybrominated diphenyl ethers (PBDEs) in a background site in Central China

作者: Zhan, LX (Zhan, Lingxi); Lin, T (Lin, Tian); Cheng, HR (Cheng, Hairong); Wang, ZW (Wang, Zuwu); Cheng, ZN (Cheng, Zhineng); Zhou, D (Zhou, Deng); Qin, ZX (Qin, Zhengxin); Zhang, G (Zhang, Gan)

來源出版物: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH  卷: 26  期: 31  頁: 31934-31944  DOI: 10.1007/s11356-019-06312-6  出版年: NOV 2019  

摘要: Jinsha (JSH) is one of the regional background sites in Central China. In this study, eight polybrominated diphenyl ethers (PBDEs) were measured in atmospheric deposition samples (dry particle, wet particle, and wet dissolved), air (gaseous and particle) samples, and soil samples that were collected from March 2012 to March 2013. Of all eight PBDEs, BDE-209 was the most abundant congener in both deposition samples and air/soil samples. Average dry particle, wet particle, and wet dissolved deposition fluxes of Sigma 8PBDEs were 270 +/- 310 pg m(-2) day(-1), 130 +/- 210 pg m(-2) day(-1), and 250 +/- 330 pg m(-2) day(-1), respectively, while those of BDE-209 were 210 +/- 290 pg m(-2) day(-1), 80 +/- 120 pg m(-2) day(-1), and 160 +/- 290 pg m(-2) day(-1), respectively. Dry deposition velocities of individual PBDE ranged from 0.11 +/- 0.15 cm s(-1) (BDE-183) to 0.24 +/- 0.38 cm s(-1) (BDE-209), and total washout ratios ranged from 5.0 x 10(3) (BDE-28) to 4.2 x 10(4) (BDE-209). The calculated net air-soil gas exchange flux of Sigma 8PBDEs was - 16 +/- 13 pg m(-2) day(-1), suggesting the deposition status of PBDEs. The gas exchange flux at the air-soil interface was significantly lower than the deposition flux, which only accounted for 2.5% of the total deposition flux, implying that atmospheric deposition was an important input pathway for PBDEs to soils. Overall, the pollution level of the soil was relatively low, and the soil serves as a sink for PBDEs from adjacent regions.

入藏号: WOS:000500201200031

PubMed ID: 31489547

語言: English

文獻類型: Article

作者關鍵詞: PBDEs; Wet and dry deposition; Seasonal variation; Air soil gas exchange; Background site

地址: [Zhan, Lingxi; Cheng, Hairong; Wang, Zuwu] Wuhan Univ, Sch Resource & Environm Sci, Int Cooperat Base Sustainable Utilizat Resources, Wuhan 430072, Hubei, Peoples R China.

[Lin, Tian] Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China.

[Cheng, Hairong] Jianghan Univ, Hubei Key Lab Ind Fume & Dust Pollut Control, Wuhan 430056, Hubei, Peoples R China.

[Cheng, Zhineng; Zhang, Gan] Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China.

[Zhou, Deng; Qin, Zhengxin] Meteorol Bur Xianning, Xianning 437100, Peoples R China.

通訊作者地址: Cheng, HR (通訊作者)，Wuhan Univ, Sch Resource & Environm Sci, Int Cooperat Base Sustainable Utilizat Resources, Wuhan 430072, Hubei, Peoples R China.

Cheng, HR (通訊作者)，Jianghan Univ, Hubei Key Lab Ind Fume & Dust Pollut Control, Wuhan 430056, Hubei, Peoples R China.

電子郵件地址: chenghr@whu.edu.cn

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