Identification of perylene in sediments: Occurrence and diagenetic evolution
Perylene and penta-aromatic hydrocarbons were determined in sediments as part of a study that was dedicated to the aquatic ecosystem of Elelenwo Creek (Southern Nigeria) in order to carry out a critical corroboration of occurrence and diagenetic evolution of perylene in the sediments of the creek. The results show that the annual mean levels of Benzo [g, h, i] Perylene ranged from 209.00–245.28 ⧎g/kg dry weight at the various stations sampled. Meanwhile, Station 3 recorded the highest mean level of 245.28 ⧎g/kg dry weight. The observed values for total penta-aromatic hydrocarbons were high (787.00–1154.36⧎g/kg dry weight) in all the stations sampled. In addition, the highest mean value of 1154.36⧎g/kg dry weight was again recorded at station 3 for the penta-aromatic hydrocarbons. One origin index or concentration ratio of Ip/Ip+BghiP was also used to evaluate the suitability of the penta-aromatic hydrocarbons as a tracer to distinguish between contaminations arising from different sources. The values for the sampling stations therefore ranged from 0.41 to 0.43. A critical appraisal of the PAH index, consequently, suggested that petroleum combustion is the major penta-aromatic hydrocarbon source in sediments of the creek. The PAH group profile shows that perylene was high in the sediments and would pose apparent effects in fauna. The high concentration of perylene in the sediments was also indicative of an in situ biogenic derivation. Furthermore, a concentration of perylene > 10 % of total penta-aromatic hydrocarbons established a credible diagenetic origin.
KeywordsElelenwo Creek perylene penta-aromatic hydrocarbons sediments
Unable to display preview. Download preview PDF.
- Countway, R.E.; Dickhut, R.M.; Canuel, E.A., (2003). Polycyclic aromatic hydrocarbon (PAH) distributions and associations with organic matter in surface waters of the York River, VA Estuary. Org. Geochem., 3, 351–368.Google Scholar
- EPA, (1987). Health and Environmental Effects Profile for Benzo (ghi) perylene. Prepared by the Environmental Criteria and Assessment Office, Office of Health and Environmental Assessment for the Office of Solid Waste and Emergency Response, Cincinnati, OH. ECAO-CIN-P276. Assessment for the Office of Solid Waste and Emergency Response, Cincinnati, OH. ECAO-CIN-P276.Google Scholar
- EPA, (1991). Drinking Water Criteria Document for Polycyclic Aromatic Hydrocarbons (PAHs). Prepared by the Environmental Criteria and Assessment Office, Office of Health a nd Environmental Assessment, U.S. Environmental Protection Agency, Cincinnati, OH, for the Office of Drinking Water. ECAO-CIN-D010.Google Scholar
- Harvey, R.G., (1996). Polycyclic Aromatic Hydrocarbons, Wiley, New York, 8–11Google Scholar
- Okafor, E.C.; Opuene, K., (2006). Correlations, partitioning and bioaccumulation of trace metals between different segments of Taylor Creek, southern Nigeria. Int. J. Environ. Sci. Tech., 3(4), 437–445.Google Scholar
- Okafor, E.C.; Opuene, K., (2007) Preliminary assessment of trace metals and polycyclic aromatic hydrocarbons in the sediments of Taylor Creek, Southern Nigeria. Int. J. Environ. Sci. Tech., 4(2), 233–240.Google Scholar
- Young, L.Y.; Cerniglia, C.E., (1995). Microbial transformation and degradation of Toxic Organic Chemicals. Wiley, New YorkGoogle Scholar
- Zar, J.H., (1996). Biostatistical analysis. Prentice-Hall, upper Saddle River, 662.Google Scholar