title: Changes of polybrominated diphenyl ethers and polychlorinated biphenyls in surface soils from urban agglomeration of the Yangtze River Delta, in China between 2003 and 2012.
abstract: Surface soil samples were collected from urban agglomeration of the Yangtze River Delta (YRD), China in 2003 and 2012, respectively. Polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) were analyzed to determine if there were any changes in their levels and compositional profiles between the two sampling years. The concentrations of Σ8PBDEs ranged from 0.553 to 13.0 μg kg(-1)(with the mean of 3.31 μg kg(-1)) in the 2003 samples and from 1.01 to 43.2 μg/kg (with the mean of 10.0 μg kg(-1)) in the 2012 samples. The concentrations of Σ32PCBs ranged from 0.301 to 3.29 μg kg(-1)(with the mean of 1.01 μg kg(-1)) in the 2003 samples and from 0.205 to 3.96 μg/kg (with the mean of 0.991 μg kg(-1)) in the 2012 samples. The comparisons between the 2012 and 2003 data showed that PBDEs concentrations increased over the years, but PCB concentrations did not change much. BDE-209 was the major BDE congener in both the 2003 and 2012 samples, indicating that the dominant PBDE mixture production and usage in the YRD had been the commercial deca-BDE mixture. Investigation of the PBDE congener profiles indicated that there had been new input of octa-BDEs in this region in recent years. Little change was found for the pattern of PCBs congener profiles between 2 years' samples. As such, spatial distributions of PBDEs or PCBs in surface soil samples reflected a gradient (from high to low) from the central cities out to rural areas in both the 2003 and 2012 data. In addition, high concentrations of PBDEs were observed in the industrial and residential areas, whereas high concentrations of PCBs were only observed in the industrial areas.
authors: National Research Center for Environmental Analysis and Measurements, Dioxin Pollution Control Key Laboratory of State Environmental Protection Administration, Beijing, 100029, China, shishuangxin2001@163.com.
authors: Shuang-Xin
authors: SX
authors: Shi
authors: Ye-Ru
authors: YR
authors: Huang
authors: Li
authors: L
authors: Zhou
authors: Li-Fei
authors: LF
authors: Zhang
authors: Liang
authors: L
authors: Dong
authors: Wen-Long
authors: WL
authors: Yang
authors: Xiu-Lan
authors: XL
authors: Zhang
mesh_terms: D002681:China; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis*; D045483:Rivers / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014507:Urbanization
chemical_list: D055768:Halogenated Diphenyl Ethers; D012987:Soil; D012989:Soil Pollutants; D011078:Polychlorinated Biphenyls
references: Mar Pollut Bull. 2006 Oct;52(10):1299-304
references: 16837014
references: Bull Environ Contam Toxicol. 2014 Apr;92(4):466-71
references: 24526281
references: J Environ Sci (China). 2007;19(3):338-42
references: 17918597
references: Chemosphere. 2010 Apr;79(7):754-62
references: 20236682
references: Chemosphere. 2010 Aug;80(10):1207-12
references: 20594579
references: Environ Sci Technol. 2005 May 15;39(10):3521-7
references: 15952354
references: Environ Sci Technol. 2007 Apr 15;41(8):2730-7
references: 17533831
references: Sci Total Environ. 2009 Jan 15;407(3):1105-13
references: 19019410
references: Chemosphere. 2011 Aug;84(7):936-42
references: 21723587
references: Environ Monit Assess. 2011 Mar;174(1-4):259-70
references: 20437267
references: Environ Pollut. 2009 Jun;157(6):1911-6
references: 19233527
references: Chemosphere. 2005 Aug;60(6):810-6
references: 15946727
references: Sci Total Environ. 2013 Jun 1;454-455:619-26
references: 23583986
references: Chemosphere. 2011 Oct;85(3):399-405
references: 21893331
references: Chemosphere. 2002 Feb;46(5):745-55
references: 11999798
references: Chemosphere. 2005 Aug;60(6):731-9
references: 15964056
references: Chemosphere. 2012 Aug;88(7):769-78
references: 22546636
references: Environ Sci Technol. 2011 Sep 1;45(17 ):7291-7
references: 21819101
references: Environ Sci Technol. 2007 Jun 1;41(11):3871-6
references: 17612162