Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Rapid offline isotopic characterisation of hydrocarbon gases generated by micro scale sealed vessel pyrolysis

    190636_190636.pdf (354.8Kb)
    Access Status
    Open access
    Authors
    Ladjavadi, Mojgan
    Berwick, Lyndon
    Grice, Kliti
    Boreham, C.
    Horsfield, B.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Ladjavadi, Mojgan and Berwick, Lyndon J. and Grice, Kliti and Boreham, Chris J. and Horsfield, Brian. 2013. Rapid offline isotopic characterisation of hydrocarbon gases generated by micro scale sealed vessel pyrolysis. Organic Geochemistry. 58: pp. 121-124.
    Source Title
    Organic Geochemistry
    DOI
    10.1016/j.orggeochem.2013.03.003
    ISSN
    01466380
    Remarks

    NOTICE: This is the author’s version of a work that was accepted for publication in Organic Chemistry. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Organic Chemistry, Vol. 58, May 2013.

    URI
    http://hdl.handle.net/20.500.11937/12252
    Collection
    • Curtin Research Publications
    Abstract

    The method of offline coupling of micro scale sealed vessel pyrolysis (MSSV-Py) and gas chromatography-isotopic ratio mass spectrometry (GC-IRMS) was developed using a purpose built gas sampling device. The sampling device allows multiple GC and GC-IRMS injections to quantify the molecular composition and isotopic evolution of hydrocarbon gases (n-C1 to n-C5) generated by artificial maturation of sedimentary organic matter. Individual MSSV tubes were introduced into the gas sampling device, which was then evacuated to remove air and filled with helium at atmospheric pressure. The tube was crushed using a plunger after which the device was heated at 120 °C for 1 min to thermally mobilize and equilibrate the generated gas products. Aliquots of the gas phase were sampled using a gas tight syringe and analysed via GC-FID and GC-IRMS. Hydrocarbon gas yields using this technique have been calculated and compared with those obtained previously by online MSSV pyrolysis of the same samples under the same conditions. The major objective of this study was to investigate the potential isotopic fractionation of generated gaseous hydrocarbons within the gas sampling device as a function of time and temperature. For this purpose several tests using a standard gas mixture have been performed on the GC-IRMS. The analyses showed no isotopic fractionation of C1–5 hydrocarbons within 1 hour, minor δ13C enrichment after 5 hours, and significant enrichment after 22 hours for all the compounds at a temperature of 120 °C.

    Related items

    Showing items related by title, author, creator and subject.

    • The organic geochemistry of marine-influenced coals.
      Sandison, Carolyn M. (2001)
      The importance of organic sulphur fixation in the preservation of organic matter in humic coal-forming environments is demonstrated in this thesis. The transgression of coal depositional systems by marine waters during ...
    • Characterisation of aquatic natural organic matter by micro-scale sealed vessel pyrolysis
      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 ...
    • Evaluating the source, age, thermal history and palaeoenvironments of deposition of Australian and Western Canadian petroleum systems: compound specific stable isotopes coupled with inorganic trace elements
      Maslen, Ercin (2010)
      Petroleum geochemistry is an important scientific discipline used in the exploration and production of hydrocarbons. Petroleum geochemistry involves the applications of organic geochemistry to the study of origin, formation, ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.