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  • Title: Surveillance and source diagnostic investigation of hydrocarbon residues in sediments.
    Author: Ololade IA, Lajide L.
    Journal: J Environ Sci Health A Tox Hazard Subst Environ Eng; 2009 Aug; 44(10):1033-40. PubMed ID: 19827496.
    Abstract:
    The nature and seasonal distribution of hydrocarbons were studied in Ondo coastal region in Western Nigeria. The petroleum hydrocarbons were screened by gas chromatography with flame ionization detector (GC/FID) and gas chromatography-mass spectrometry (GC-MS). Complex series of compounds were identified. The overall molecular compositions obtained were characteristic of petrogenic origin with very little biogenic input. The concentrations of two important polycyclic aromatic hydrocarbons (PAHs); phenanthrene and anthracene exceeded the threshold level where adverse effects on biota would occasionally occur; a conclusion suggested to be clarified by site-specific studies on resident organisms. The study is useful for ecological risk assessment in the context of contaminant input, nature, pattern and trend.
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