Trophic magnification of poly- and perfluorinated compounds in a subtropical food web

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

182 Scopus Citations
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Author(s)

  • Eva I. H. Loi
  • Leo W. Y. Yeung
  • Sachi Taniyasu
  • Paul K. S. Lam
  • Kurunthachalam Kannan
  • And 1 others
  • Nobuyoshi Yamashita

Detail(s)

Original languageEnglish
Pages (from-to)5506-5513
Journal / PublicationEnvironmental Science and Technology
Volume45
Issue number13
Publication statusPublished - 1 Jul 2011

Abstract

Perfluorinated compounds (PFCs) are known to biomagnify in temperate and Arctic food webs, but little is known about their behavior in subtropical systems. The environmental distribution and biomagnification of PFCs, extractable organic fluorine (EOF), and total fluorine were investigated in a subtropical food web. Surface water, sediment, phytoplankton, zooplankton, gastropods, worms, shrimps, fishes, and waterbirds collected in the Mai Po Marshes Nature Reserve in Hong Kong were analyzed. Trophic magnification was observed for perfluorooctanesulfonate (PFOS), perfluorodecanoate (PFDA), perfluoroundecanoate (PFUnDA), and perfluorododecanoate (PFDoDA) in this food web. Risk assessment results for PFOS, PFDA, and perfluorooctanoate (PFOA) suggest that current PFC concentrations in waterbird livers are unlikely to pose adverse biological effects to waterbirds. All hazard ratio (HR) values reported for PFOS and PFOA are less than one, which suggests that the detected levels will not cause any immediate health effects to the Hong Kong population through the consumption of shrimps and fishes. However, only 10-12% of the EOF in the shrimp samples was comprised of known PFCs, indicating the need for further investigation to identify unknown fluorinated compounds in wildlife. © 2011 American Chemical Society.

Citation Format(s)

Trophic magnification of poly- and perfluorinated compounds in a subtropical food web. / Loi, Eva I. H.; Yeung, Leo W. Y.; Taniyasu, Sachi; Lam, Paul K. S.; Kannan, Kurunthachalam; Yamashita, Nobuyoshi.

In: Environmental Science and Technology, Vol. 45, No. 13, 01.07.2011, p. 5506-5513.

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