Environmental Geochemistry and Health

, Volume 32, Issue 1, pp 13–21

Increasing polybrominated diphenyl ether (PBDE) contamination in sediment cores from the inner Clyde Estuary, UK

  • Christopher H. Vane
  • Yun-Juan Ma
  • She-Jun Chen
  • Bi-Xian Mai
Original Paper

DOI: 10.1007/s10653-009-9261-6

Cite this article as:
Vane, C.H., Ma, YJ., Chen, SJ. et al. Environ Geochem Health (2010) 32: 13. doi:10.1007/s10653-009-9261-6

Abstract

The concentrations of 16 polybrominated diphenyl ether (PBDE) congeners in six short sediment cores from the Clyde Estuary were determined by gas-chromatography mass-spectrometry. Total PBDE concentrations ranged from 1 to 2,645 μg/kg and the average concentration was 287 μg/kg. BDE-209 was the main congener and varied from 1 to 2,337 μg/kg. Elevated total PBDE concentrations were observed close to the sediment surface in the uppermost 10 cm of four of the six sediment cores. Comparison of the down core PBDE profiles revealed that the increase was driven by the accumulation of deca-BDE. Although the deca-BDE mix was dominant, the presence of lower molecular weight congeners BDE-47, BDE-99, BDE-183 and BDE-153 at most sediment intervals suggested additional sources of penta-BDE and octa-BDE pollution. Changing PBDE source input was the major factor in influencing the proportion of nona-brominated congeners, although other explanations such as post burial photo-debromination of BDE-209 cannot be entirely discounted. A clear cascading to lower hepta-, hexa-, and penta-homologues was not found. The increase in total PBDE concentrations and particularly the deca-BDE may possibly be ascribed to the use and subsequent disposal of electrical appliances such as televisions and computers. In the Clyde sediments, the proportion of nona-brominated congeners was higher than that reported for commercial mixtures. This might be due to changing sources of PBDEs or post burial photo-debromination of BDE-209.

Keywords

River ClydeSedimentFlame retardantEstuarine contaminationPersistent organic pollutant (POPs)

Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Christopher H. Vane
    • 1
  • Yun-Juan Ma
    • 2
  • She-Jun Chen
    • 2
  • Bi-Xian Mai
    • 2
  1. 1.British Geological Survey, Kingsley Dunham CentreNottinghamUK
  2. 2.State Key Laboratory of Organic GeochemistryGuangzhou Institute of Geochemistry, Chinese Academy of SciencesGuangzhouChina