Effects of weathering on sterol, fatty acid methyl ester (FAME), and hydrocarbon profiles of biodiesel and biodiesel/diesel blends

Stephen Fuller, Val Spikmans, Gary Vaughan, Chris Guo

    Research output: Contribution to journalArticlepeer-review

    9 Citations (Scopus)

    Abstract

    The weathering of biodiesel and biodiesel/diesel blends was investigated to determine the changes in the profiles of fatty acid methyl esters (FAMEs), sterols, and hydrocarbons. Sterols were more persistent than FAMEs and are better candidates for identifying biodiesels in environmental media and for determining the source of a biodiesel spill. The changes in FAME and sterol profiles over time are discussed. In biodiesel blends, accelerated weathering was observed for pyrene, fluoranthene, and their alkyl homologues compared to diesel. FAME and sterol analysis should be performed in addition to hydrocarbon profiling to distinguish between a weathered diesel and a weathered biodiesel/diesel blend.
    Original languageEnglish
    Pages (from-to)42-49
    Number of pages8
    JournalEnvironmental Forensics
    Volume14
    Issue number1
    DOIs
    Publication statusPublished - 2013

    Keywords

    • biodiesel fuels
    • fatty acid methyl esters
    • hydrocarbons
    • sterols
    • weathering

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