Assessment of petroleum pollution in a Mexican river by molecular markers and carbon isotope ratios |
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| Institution: | 1. University of Tunis El Manar, Faculty of Sciences of Tunis, LR05ES05 Laboratory of Genetics, Immunology and Human Pathology, 2092 Tunis, Tunisia;2. University of Tunis El Manar, Higher Institute of Nursing Sciences of Tunis, 1007 Tunis, Tunisia;3. University of Tuscia, Department of Ecological and Biological Sciences, Viterbo, Italy;4. Bioinformatics Facility European Brain Research Institute (EBRI) “Rita Levi-Montalcini”, Viale Regina Elena 295, 00161 Roma, Italy;5. Institute of Translational Pharmacology National Research Council (CNR), Roma, Italy;6. University of Tunis El Manar, Faculty of Medicine of Tunis, Laboratory of Physiology, 1007 Tunis, Tunisia;7. La Rabta Hospital, Gastroenterology Department A, 1007 Tunis, Tunisia;1. Department of Environmental Sciences, Faculty of Natural Resources and Marine Science, Tarbiat Modares University, P.O. Box 46414-356, Noor, Mazandaran, Iran;2. Geosciences Division, Research Institute of Petroleum Industry, Tehran, Iran |
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| Abstract: | Sediments sampled within bed of the Coatzacoalcos river, Veracruz, Mexico were used as geo-accumulators for the assessment of the status of petroleum pollution in the Coatzacoalcos river. Stable carbon isotope ratios and the composition of aliphatic and aromatic hydrocarbons were determined in order to evaluate the importance of the petrogenic inputs as well as to ascertain their spatial distribution. Molecular markers, namely acyclic isoprenoid hydrocarbons, steranes and hopanes were studied for source identification. As result, high levels of petroleum were found in the whole studied area, with no defined spatial trends, corresponding to an overall pollution by the same type of crude oil products. |
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