Temporal variation and biomagnification of organohalogen compounds in finless porpoises (Neophocaena phocaenoides) from the South China Sea

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Karri Ramu
  • Natsuko Kajiwara
  • Paul K.S. Lam
  • Thomas A. Jefferson
  • Kaiya Zhou
  • And 1 others
  • Shinsuke Tanabe

Detail(s)

Original languageEnglish
Pages (from-to)516-523
Journal / PublicationEnvironmental Pollution
Volume144
Issue number2
Publication statusPublished - Nov 2006

Abstract

Polybrominated diphenyl ethers (PBDEs) and organochlorine compounds (OCs) were determined in the blubber of male finless porpoises (Neophocaena phocaenoides) collected in 1990 and 2000/01 from the South China Sea. Among the organohalogen compounds analyzed, DDTs and PCBs were the predominant contaminants in the porpoises, ranging from 26,000 to 260,000 and 1400 to 28,000 ng/g lipid wt., respectively. PBDEs ranged from a minimum of 84 ng/g lipid wt., in 1990 to a maximum of 980 ng/g lipid wt., in 2001, showing a significant increase during the time period investigated. Congener profiles in finless porpoises did not shift to higher BDE congeners during these years, implying a continuous discharge of lower BDE commercial mixtures, such as PentaBDE. For OCs, HCHs concentrations decreased significantly, while others did not exhibit any significant temporal variation. Biomagnification factors (BMFs) were found to be highest for CHLs and lowest for HCB. PBDEs and PCBs had comparable BMFs, indicating a similar potential for biomagnification through the food web. © 2006 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Finless porpoise, Organochlorines, Polybrominated diphenyl ethers, South China Sea, Temporal variation

Citation Format(s)

Temporal variation and biomagnification of organohalogen compounds in finless porpoises (Neophocaena phocaenoides) from the South China Sea. / Ramu, Karri; Kajiwara, Natsuko; Lam, Paul K.S. et al.
In: Environmental Pollution, Vol. 144, No. 2, 11.2006, p. 516-523.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review