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    Bacterial biomarkers thermally released from dissolved organic matter

    Access Status
    Fulltext not available
    Authors
    Greenwood, Paul
    Leenheeer, J.
    McIntyre, C.
    Berwick, Lyndon
    Franzmann, P.
    Date
    2006
    Type
    Journal Article
    
    Metadata
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    Citation
    Greenwood, P. and Leenheeer, J. and McIntyre, C. and Berwick, L. and Franzmann, P. 2006. Bacterial biomarkers thermally released from dissolved organic matter. Organic Geochemistry. 37: pp. 597-609.
    Source Title
    Organic Geochemistry
    DOI
    10.1016/j.orggeochem.2005.12.009
    ISSN
    01466380
    URI
    http://hdl.handle.net/20.500.11937/44192
    Collection
    • Curtin Research Publications
    Abstract

    Hopane biomarker products were detected using microscale sealed vessel (MSSV) pyrolysis gas chromatography–mass spectrometry (GC–MS) analysis of dissolved organic matter from natural aquatic systems colonised by bacterial populations. MSSV pyrolysis can reduce the polyhydroxylated alkyl side chain of bacteriohopanepolyols, yielding saturated hopane products which are more amenable to GC–MS detection than their functionalised precursors. This example demonstrates how the thermal conditions of MSSV pyrolysis can reduce the biologically-inherited structural functionality of naturally occurring organic matter such that additional structural fragments can be detected using GC methods. This approach complements traditional analytical pyrolysis methods by providing additional speciation information useful for establishing the structures and source inputs of recent or extant organic material.

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