Distribution of polybrominated diphenyl ethers in the surface sediment of the East China Sea

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• 作者：Huijuan Li (1)
  Jing Lan (2)
  Guoliang Li (3)
  Zongshan Zhao (1) (3)
  Guibin Jiang (3)
  
• 关键词：PBDEs ; The ECS ; Distribution ; Surface sediments ; Dilution effect
• 刊名：Chinese Science Bulletin
• 出版年：2014
• 出版时间：February 2014
• 年：2014
• 卷：59
• 期：4
• 页码：379-387
• 全文大小：607 KB
• 作者单位：Huijuan Li (1)
  Jing Lan (2)
  Guoliang Li (3)
  Zongshan Zhao (1) (3)
  Guibin Jiang (3)
  
  1. Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China
  2. College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China
  3. State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China
  
• ISSN：1861-9541

文摘

The concentrations of polybrominated diphenyl ethers (PBDEs) were determined in the surface sediments of 20 locations in the East China Sea (ECS). The ∑PBDEs (sum of 13 PBDE congeners, without brominated diphenyl ether 209 (BDE209) ranged from 2.6 to 49?pg?g? (dry weight) with an average of 21?pg?g?, which fell at the low end of the global range. The spatial distribution presented an offshore decreasing trend towards the outer shelf and along the coastline, suggesting a direct influence of the inputs by the Yangtze River. The ∑PBDE concentrations were influenced by the total organic carbon of the sediment, as demonstrated by their similar spatial distributions. The ∑C27?+?C29?+?C31 n-alkanes concentrations and sand % reported in the literature for sediments in the ECS presented similar spatial distributions as ∑PBDEs, which suggests that a considerable part of ∑PBDEs may come from the Yangtze River and that grain size plays an important role in PBDE accumulation. The three dominant congeners were BDE28 (19.8?%), BDE47 (26.4?%), and BDE99 (16.8?%). The present study compared the congener patterns of the sedimentary PBDEs with those of commercial products. The results indicated the possible use of penta-BDE in the Yangtze River Basin in a wide range or the fractionation and transformation of PBDE congeners during their long-range transport.