GC/MS analysis of polynuclear aromatic hydrocarbons in sediment samples from the Niger Delta region |
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Authors: | Anyakora Chimezie Ogbeche Anthony Palmer Pete Coker Herbert Ukpo Grace Ogah Celina |
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Institution: | Department of Pharmaceutical Chemistry, University of Lagos, Nigeria. chimezie@email.com |
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Abstract: | Thirteen sediment samples from different locations in the Niger Delta region of Nigeria were analyzed for the presence of 16 polynuclear aromatic hydrocarbons (PAHs) via gas chromatography/mass spectrometry. The specific target compounds for this study included naphthalene, acenaphthylene, acenaphthene, flourene, phenanthrene, anthracene, flouranthene, pyrene, benza]anthracene, chrysene, benzob]fluoranthene, benzok]flouranthene, benzoa]pyrene, benzoghi]perylene, dibenza,h]anthracene, and indeno1,2,3-cd]pyrene. Four isotopically labeled polynuclear aromatic hydrocarbons (acanaphthene-d10, phenanthrene-d10, chrysene-d12 and perylene-d12) were used for internal standardization. All 16 PAHs were found in most of the thirteen samples with concentration ranging from 0.1 microg/kg to 28 microg/kg. It was also found that the 5 and 6-ring PAHs were present in higher concentrations than all the other compounds, indicating their high resistance to microbial degradation. |
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