Aliphatic Hydrocarbons Distribution in Sediment Cores of Select Creeks in Delta State, Nigeria

作者：Eguvbe P M; Iwegbue C M A^*; Egboh S H O; Ogala J E

来源：Environmental Forensics, 2015, 16(3): 275-295.

DOI：10.1080/15275922.2015.1022838

• aliphatic hydrocarbons
• core sediment
• creeks
• carbon preference index

The spatial and seasonal changes in the distribution, composition, and concentrations of aliphatic hydrocarbons were investigated in sediment cores of Ubeji, Ifie, and Egbokodo Creeks in the Niger Delta, Nigeria. A total of 222sediment core samples were collected during the wet season (August 2010) and the dry season (January 2011). The samples were dried, soxhlet extracted, fractionated and analyzed for aliphatic hydrocarbons by using a gas chromatograph with flame ionization detector (GC-FID). The concentrations of aliphatic hydrocarbons ranged from 37 to 286,894g/kg (wet season) and from 30 to 11,773g/kg (dry season). The concentrations of n-alkanes for a number of stations in this study are comparable to sites with high anthropogenic activities in the Niger Delta. The carbon preference index (CPI) and the pristane/phytane ratios showed that the major source of hydrocarbon pollution in the sediment core was from petrogenic origin.

• 出版日期2015