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    Chronic sublethal effects associated with branched alkylbenzenes bioaccumulated by mussels.

    Access Status
    Fulltext not available
    Authors
    Scarlett, Alan
    Rowland, S.
    Galloway, T.
    Lewis, A.
    Booth, A.
    Date
    2008
    Type
    Journal Article
    
    Metadata
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    Citation
    Scarlett, A. and Rowland, S. and Galloway, T. and Lewis, A. and Booth, A. 2008. Chronic sublethal effects associated with branched alkylbenzenes bioaccumulated by mussels.. Environ Toxicol Chem. 27 (3): pp. 561-567.
    Source Title
    Environ Toxicol Chem
    DOI
    10.1897/07-347
    ISSN
    0730-7268
    URI
    http://hdl.handle.net/20.500.11937/37848
    Collection
    • Curtin Research Publications
    Abstract

    Crude oils are complex mixtures of many thousands of compounds, both resolved and unresolved by conventional gas chromatography (GC). Recent research using comprehensive two-dimensional gas chromatography-time-of-flight-mass-spectrometry (GC x GC-ToF-MS) identified branched alkylbenzenes (BABs) as a major component of some unresolved complex mixtures of hydrocarbons (UCMs) bioaccumulated in the tissues of North Sea mussels, Mytilus edulis, previously found to have poor health status. Here the effect of long-term exposure to low aqueous concentration of BABs and mussels' ability to recover, was determined. Mussels were exposed to 5 microg/L of a complex mixture of C(12-14) BABs for 14 d. Feeding rates and the viability of hemocytes were measured immediately after exposure and again after 5 d depuration. Tissues were extracted, analyzed and alkylbenzenes quantified by both GC-MS and GC x GC-ToF-MS. Mussel extracts from previous acute tests were also reanalyzed and quantified using GC x GC-ToF-MS. Mussels exposed to 5 microg/L BABs for 14 d accumulated 46 to 47 microg/g dry weight alkylbenzenes; this was similar to tissue concentrations of mussels exposed to 41microg/L for 72 h. Feeding rates were significantly reduced (p < or = 0.05) and were dependent upon tissue concentration. Cellular viability was not significantly affected. Following 5 d in clean seawater, the BABs were only partially depurated and feeding rates failed to fully recover. The use of GC x GC-ToF-MS in the present study has shown that mussel tissue concentrations of complex mixtures of alkylbenzenes, and their corresponding effects, are consistent with reported concentrations within UCM-contaminated wild mussel populations with poor health status.

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    • Chronic sublethal effects associated with branched alkylbenzenes bioaccumulated by mussels
      Scarlett, Alan; Rowland, S.; Galloway, T.; Lewis, A.; Booth, A. (2008)
      Crude oils are complex mixtures of many thousands of compounds, both resolved and unresolved by conventional gas chromatography (GC). Recent research using comprehensive two-dimensional gas chromatography-time-of-flight-mass- ...
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      Booth, A.; Scarlett, Alan; Lewis, C.; Belt, S.; Rowland, S. (2008)
      Previously, comprehensive two-dimensional gas chromatography-time of flight-mass-spectrometry (GCxGC-ToF-MS) revealed that the unresolved complex mixtures (UCMs) of contaminant hydrocarbons accumulated by health-affected ...
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      The trophic transfer of monoaromatic hydrocarbons to predatory organisms feeding upon contaminated marine animals is not well reported within the scientific literature. Branched alkylbenzenes (BABs) unresolved by gas ...
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