Bacterial biomarkers thermally released from dissolved organic matter
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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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Berwick, Lyndon (2009)The analytical capacity of MSSV pyrolysis has been used to extend the structural characterisation of aquatic natural organic matter (NOM). NOM can contribute to various potable water issues and is present in high ...
Mechanistic Investigation into Bed Agglomeration during Biomass Fast Pyrolysis in a Fluidized-Bed ReactorBurton, A.; Wu, Hongwei (2012)This paper demonstrates that during the pyrolysis of mallee leaf (355-500 µm) in a fluidized-bed reactor (bed materials: silica sand, 125-355 µm) at 300-700 °C, bed agglomeration takes place due to the formation of char-char ...
Analytical pyrolysis for determining the molecular composition of contemporary monosulfidic black ooze.Lockhart, Robert; Berwick, Lyndon; Greenwood, Paul; Grice, Kliti; Kraal, P.; Bush, R. (2013)On-line flash pyrolysis, micro-scale sealed vessel (MSSV) pyrolysis and catalytic hydropyrolysis (HyPy) were used to characterise the insoluble, macromolecular organic component of monosulfidic black oozes (MBO) which ...