Occurrence and distribution of dibenzofurans and benzo[b]naphthofurans in the crude oils from the Northern and offshore Niger Delta basin,Nigeria |
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| Authors: | Abiodun B. Ogbesejana Zhong Ningning Oluwadayo O. Sonibare |
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| Affiliation: | 1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing, People’s Republic of China;2. Department of Applied Chemistry, Federal University, Dutsin-Ma, Katsina State, Nigeria;3. Department of Chemistry, University of Ibadan, Ibadan, Oyo State, Nigeria;4. Department of Chemistry, University of Ibadan, Ibadan, Oyo State, Nigeria |
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| Abstract: | The occurrence and distributions of dibenzofurans (DBFs) and benzo[b]naphthofurans were investigated in crude oils from Niger Delta, Nigeria, by gas chromatography-mass spectrometry-mass spectrometry. The distribution of DBFs was characterized by the predominance of C2-dibenzofurans. 4-Methyldibenzofuran was the most abundant among the methyldibenzofurans isomers while dimethyldibenzofuran-2 (DMDBF-2), ethyldibenzofuran-1, DMDBF-3, and DMDBF-6 occurred in higher amounts when compared with other DMDBFs. Among the benzonaphthofurans, the abundance of benzo[b]naphtho[2,1-d]furan was higher than other isomers. The DBFs distributions in the oils were not affected by source facies and depositional environments. However, the DBFs concentrations increased with increasing maturity in oils from ADL and MJO oilfields. |
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| Keywords: | benzonaphthofurans crude oils dibenzofurans gas chromatography-mass spectrometry Niger delta |
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