1. Onojake, M.C., G. Iwuoha and J.O. Osakwe, 2017. Banana peel as a low cost adsorbent for the removal of Ni²⁺, Cu²⁺ and Fe²⁺ from industrial effluents. J. Chem. Soc. Nigeria, 40: 59-62.
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2. Onojake, M.C. and C.O. Ndubuka, 2016. Appraisal of the bulk properties of Bitumen samples from four deposits in South west, Nigeria. J. Pet. Coal, 58: 407-413.
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3. Iwuoha, G.N. and M.C. Onojake, 2016. Bioaccumulation of heavy metals in crustaceans from Oron river channel, Osung area Oron-city, Akwa-Ibom, Nigeria. J. Chem. Soc. Nigeria, 41: 130-137.
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4. Abrakasa, S., V. Ukaegbu and M. Onojake, 2016. The source kitchen of the Niger Delta oils: Case study on Nembe Creek E1. 0 and the Kolo Creek E2. 0 reservoirs. J. Pet. Exploration Prod. Technol., 6: 331-341.
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5. Onojake, M.C., S. Abrakasa and L.C. Osuji, 2015. Chemometric representation of molecular marker data of some Niger Delta crude oils. Egypt. J. Pet., 24: 139-143.
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6. Onojake, M.C., O. Omokheyeke and F.D. Sikoki, 2015. Radionuclides and trace metals level in some benthos: A case study of the bonny/new Calabar river Estuary. J. Chem. Soc. Nigeria, 40: 89-95.
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7. Onojake, M.C., L.C. Osuji and S. Abrakasa, 2015. Source, depositional environment and maturity levels of some crude oils in southwest Niger Delta, Nigeria. Chin. J. Geochem., 34: 224-232.
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8. Onojake, M.C., F.D. Sikoki, O. Omokheyeke and R.U. Akpiri, 2015. Surface water characteristics and trace metals level of the Bonny/New Calabar River Estuary, Niger Delta, Nigeria. Applied Water Sci., 7: 951-959.
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9. Onojake, M.C., F.D. Sikoki, B.B. Babatunde, R.U. Akpiri, D. Akpuloma and O. Omokheyeke, 2015. Bioaccumulation of heavy metals in two matrices of the Bonny/New Calabar River Estuary in Niger Delta, Nigeria. Ocean Sci. J., 50: 203-208.
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10. Iwuoha, G.N., J. Nwigoo and M.C. Onojake, 2015. Determination of total potency equivalent concentration (Tpec) of carcinogenic polycyclic aromatic hydrocarbons (Cpahs) in soils of Bodo-City. J. Applied Sci. Environ. Manage., 19: 495-499.
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11. Osuji, L.C., N.C. Oforka and M.C. Onojake, 2014. Multivariate analysis of source and maturity biomarker indices of crude oils from SW Niger Delta. Geosci. J., 18: 365-371.
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12. Onojake, M.C., O. Omokheyeke and J.O. Osakwe, 2014. Petroleum hydrocarbon contamination of the environment: A case study. Bull. Earth Sci. Thailand, 6: 67-79.
13. Onojake, M.C., L.C. Osuji and S. Abrakasa, 2014. Geochemical appraisal of crude oils from Umutu and Bomu fields in the Niger Delta. Bull. Earth Sci. Thailand, 6: 31-39.
14. Onojake, M.C., L.C. Osuji and N.C. Oforka, 2014. Bulk geochemical characteristics of crude oils from the Umutu/Bomu fields, Niger Delta, Nigeria. Pet. Sci. Technol., 32: 618-624.
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15. Onojake, M.C., N. Atako and L.C. Osuji, 2013. The effect of the adulteration of Premium Motor Spirit (PMS) on automotive engines. Pet. Sci. Technol., 31: 1-6.
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16. Onojake, M.C., L.C. Osuji and N.C. Oforka, 2013. Preliminary hydrocarbon analysis of crude oils from Umutu/Bomu fields, south west Niger Delta Nigeria. Egypt. J. Pet., 22: 217-224.
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17. Onojake, M.C., J.O. Osakwe and O. Omokheyeke, 2013. Source distribution of polycyclic aromatic hydrocarbons of an oil spill impacted site in Niger Delta, Nigeria. Eur. Chem. Bull., 3: 179-182.
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18. Onojake, M.C. and O. Frank, 2013. Assessment of heavy metals in a soil contaminated by oil spill: A case study in Nigeria. Chem. Ecol., 29: 246-254.
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19. Onojake, M.C., L.C. Osuji and N. Atako, 2012. Behavioural characteristics of adulterated Premium Motor Spirit (PMS). Egypt. J. Pet., 21: 135-138.
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20. Onojake, M.C. and U.I. Abanum, 2012. Evaluation and management of produced water from selected oil fields in Niger Delta, Nigeria. Arch. Applied Sci. Res., 4: 39-47.
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21. Onojake, M.C. and S. Abrakasa, 2012. Engineering and geochemical properties of some crude oils. Int. J. Environ. Bioenergy, 2: 53-61.
22. Onojake, M.C. and L.C. Osuji, 2012. Assessment of the physico-chemical properties of hydrocarbon contaminated soil. Arch. Applied Sci. Res., 4: 48-58.
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23. Oforka, N.C., L.C. Osuji and M.C. Onojake, 2012. Petroleum hydrocarbon fingerprinting of crude oils from umutu/bomu oil fields in Niger Delta, Nigeria. Arch. Applied Sci. Res., 4: 246-253.
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24. Onojake, M.C., S.O. Ukerun and G. Iwuoha, 2011. A statistical approach for evaluation of the effects of industrial and municipal wastes on Warri Rivers, Niger Delta, Nigeria. Water Qual. Exposure Health, 3: 91-99.
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25. Onojake, M.C. and V. Okonkwo, 2011. Trace metals associated with oil spillage: A case study. J. Chem. Pharm. Res., 3: 742-751.
26. Onojake, M.C. and N.E. Emereole, 2011. Analytical studies on pollution index of river Woji in Port Harcourt, Nigeria. Res. J. Soil Water Manage., 2: 1-5.
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27. Mudiaga, O.C., O.C. Nicolas and O.C. Leo, 2011. Trace metals geochemistry of crude oils from Umutu/Bomu fields in south west Niger delta Nigeria. Energy Environ. Res., 1: 139-146.
28. Osuji, L.C. and C.M. Onojake, 2006. Field reconnaissance and estimation of petroleum hydrocarbon and heavy metal contents of soils affected by the Ebocha-8 oil spillage in Niger Delta, Nigeria. J. Environ. Manage., 79: 133-139.
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29. Osuji, L.C. and C.M. Onojake, 2004. Trace heavy metals associated with crude oil: A case study of Ebocha‐8 Oil‐spill‐polluted site in Niger Delta, Nigeria. Chem. Biodivers., 1: 1708-1715.
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30. Osuji, L.C. and C.M. Onojake, 2004. The Ebocha-8 oil spillage: II. Fate of associated heavy metals six months after. Afr. J. Environ. Assess. Manage., 9: 78-87.
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