Size and age-concentration relationships for perfluoroalkyl substances in stingray livers from eastern Australia

C Baduel; F Y Lai; Kathy A Townsend; J F Mueller

doi:10.1016/j.scitotenv.2014.07.010

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Size and age-concentration relationships for perfluoroalkyl substances in stingray livers from eastern Australia

Journal article

Peer reviewed

Size and age-concentration relationships for perfluoroalkyl substances in stingray livers from eastern Australia

C Baduel, F Y Lai, Kathy A Townsend and J F Mueller

Science of the Total Environment, Vol.496, pp.523-530

2014

DOI: https://doi.org/10.1016/j.scitotenv.2014.07.010

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Abstract

perfluorinated compounds

stingrays

biological parameters

flood

liver tissue

While the literature has reported a widespread occurrence of perfluoroalkyl substances (PFASs) in marine biota, very limited studies have been dedicated to the southern hemisphere. Hepatic concentrations of nine PFAAs were analysed in 49 stranded stingrays from eastern Australia using liquid chromatograph coupled with tandem mass spectrometry and relationships with biological parameters (i.e. body size, age and sex) were investigated. Perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) were the predominant compounds quantified, with hepatic concentrations varying from 2 to 117 and from 0.2 to 19ng.g-1 w.w., respectively. A negative correlation between the concentration of PFASs in the livers of 32 blue-spotted stingrays and the body size/age was found. This relationship was independent of the animal's sex. We postulate that the dependence on body size is related to differing uptake kinetics of the chemicals, after the sting rays were exposed to an increased level of the contaminants in their environment. Such a pollution event could be related to a severe flood event that occurred at this location a few months before the samples' collection. Our results indicate that the influence of the body size/age should be taken into account when estimating bioaccumulation parameters from environmental measurements or exposure levels of biota to PFASs. © 2014.

Details

Title: Size and age-concentration relationships for perfluoroalkyl substances in stingray livers from eastern Australia
Authors: C Baduel (Author) - University of Queensland
F Y Lai (Author) - University of Queensland
Kathy A Townsend (Author) - University of Queensland
J F Mueller (Author) - University of Queensland
Publication details: Science of the Total Environment, Vol.496, pp.523-530
Publisher: Elsevier BV
Date published: 2014
DOI: 10.1016/j.scitotenv.2014.07.010
ISSN: 0048-9697
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99450562902621
Output Type: Journal article

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