Papers

Peer-reviewed Last author Corresponding author
Dec, 2017

Spatio-temporal trends of polybrominated dibenzo-p-dioxins and dibenzofurans in archived sediments from Tokyo Bay, Japan

SCIENCE OF THE TOTAL ENVIRONMENT
  • Akitoshi Goto
  • ,
  • Nguyen Minh Tue
  • ,
  • Masayuki Someya
  • ,
  • Tomohiko Isobe
  • ,
  • Shin Takahashi
  • ,
  • Shinsuke Tanabe
  • ,
  • Tatsuya Kunisue

Volume
599
Number
First page
340
Last page
347
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.1016/j.scitotenv.2017.04.166
Publisher
ELSEVIER SCIENCE BV

The present study examined the occurrence and potential sources of mono-to octa-brominated dibenzo-p-dioxins/dibenzofurans (Mo-OBDD/Fs) in Tokyo Bay, Japan, using surface sediments and Pb-210-dated sediment cores (covering the period 1895-2000) collected in 2002. The results showed a clear difference in the spatio-temporal trend between PBDFs and PBDDs. The spatial distribution of PBDF concentrations in the surface sediments showed a decreasing trend from the head to the mouth of the bay, which was similar to that of polybrominated diphenyl ethers (PBDEs) reported previously for the same sediment samples. In the sediment cores, PBDF and PBDE concentrations increased drastically after the 1960s and reached the highest levels in the late 1990s. In addition, a significant positive correlation was observed between the concentrations of their predominant congeners, 1,2,3,4,6,7,8-HpBDF and BDE-209. These results indicate that main contamination sources of PBDFs were technical PBDE formulations, especially DecaBDE. In contrast, total PBDDs in the surface sediments were rather uniform in the whole area of the bay. Furthermore, in the sediment cores, PBDD levels showed marginal fluctuation over the past century, with the predominance of 2,7-/2,8-DiBDDs and 1,3,7-/1,3,8-TrBDDs in all the sediment layers. It is noteworthy that these PBDD congeners were also found in the sediment layers corresponding to the pre-industrial era, supporting their natural formation in the coastal environment (C) 2017 Elsevier B.V. All rights reserved.

Link information
DOI
https://doi.org/10.1016/j.scitotenv.2017.04.166
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000405252000039&DestApp=WOS_CPL
URL
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85018310894&origin=inward
ID information
  • DOI : 10.1016/j.scitotenv.2017.04.166
  • ISSN : 0048-9697
  • eISSN : 1879-1026
  • SCOPUS ID : 85018310894
  • Web of Science ID : WOS:000405252000039

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