Staff Directory | View Staff

Links

Navigational Links

Staff Details


Dr. Orok Esu Oyo-Ita

Associate Professor
Pure and Applied Chemistry
oeoyo-ita@unical.edu.ng

Dr. Orok Esu Oyo-Ita is an Associate Professor with the Department of Pure and Applied Chemistry, University of Calabar and had his University education in the university of Lagos and University of Calabar were he obtain his M.Sc. and Ph. D in pharmaceutical Chemistry and Organic Chemistry respectively. He has taught, supervised many post graduate students and carried out research in the field of Environmental/Organic Geochemistry for the past 16 years. His current research interest are in the use of molecular tracers in understanding paleo-environmental conditions and paleo-climate with the view of predicting future environmental conditions and climate change as well as the use of pyroyzed petroleum in contaminated environment. Orok Esu Oyo-Ita is fellow of the UK Higher Education Academy and has received outstanding national awards in Education. He is a recipient of the Best Session Paper Presentation Award in an international conference organized by Institute of Biological, Chemical Environmental Science in London. He has to his credit 26 scholarly publications, most of which are in reputed international Journals. Orok has attended and presented papers in workshop/conference both locally and internationally. He is a member of many professional societies and reviewer/editorial member of Environmental Monitoring Assessment(Springer), Marine Chemistry and Science of the Total Environment (Elsevier). He is also a lead Guest Editor to Journal of Earth Science and Climate Change. He is married and the marriage is blessed with three lovely kids.

Oyo-Ita, O.E., Ekpo, B.O., Oros, D.R. and Simoneit, B.R.T. (2010). Identification of 5(ß) stanones as tracers for input from sewage and animal husbandry in surface sediments from the Cross River Estuary, S.E. Niger Delta, Nigeria. Journal of Applied Sciences in Environmental Sanitation 5, 11 - 19.


Oyo-Ita, O.E., Ekpo, B.O., Oros, D.H.and Simoneit,B.R.T. (2010). Distributions and Sources of Aliphatic Hydrocarbons and Ketones in Surface Sediments from the Cross River Estuary, S.E.Niger Delta, Nigeria. Journal of Applied Sciences in Environmental Sanitation 5, 1 – 11.


B.O. Ekpo., O. E. Oyo-Ita., h. Wehner.(2005). Even n-alkanes/alkenes predominances in surface sediments from Calabar River, S.E. Niger Delta, Nigeria.Natur Wissenshaften, 92, 341 – 347.


Orok E.Oyo-ita, Bassey O. Ekpo, Daniel R. Oros and Bernd R.T.Simoneit. (2010).Occurrence and Distribution of Triterpenoid Methyl Ethers and Acetates in Sediments of the Cross River System, Southeast Nigeria. International Journal of Analytical Chemistry 20, 1 – 8.


Ekpo, B.O.., Oyo-Ita, O.E., Oros, D. and Simoneit, B. T..T. (2011). Sources and distribution of polycyclic aromatic hydrocarbons in surface sediments from Cross River Estuary, S.E. Niger Delta, Nigeria. Environmental Monitoring and Assessment 32, 1213-1219.


Oyo-Ita, O. E., Oyo-Ita, I. O. and Ugim S. U. (2011). Sources and distribution of polycyclic aromatic hydrocarbons in post-flooded soil profile near Afam power station, SE Niger Delta, Nigeria. Soil Science and Environmental Management 7, 35 – 42 (South Africa).


Ekpo, B.O., Oyo-Ita, O.E., Oros, D.. Simoneit, B.T (2011). Organic Contaminants in solvents and implication for geochemistry and environmental forensics: an example from local Vendors in Nigeria. Environmental Forensics 13, 132 – 139.


Oyo-Ita, O..E. Oyo-Ita, I. O. and Ugim, S. U. (2012). Distribution and sources of polycyclic aromatic hydrocarbons and sterols in termite nest,


Oyo-Ita, O.E. and Oyo-Ita, I.O. (2012). PAHs depositional history in recent core sediments from Ukwa Ibom lake, SE Nigeria. Environmental Geochemistry and Health 35, 189 – 199.


Oyo-ita, O.E. and Oyo-Ita, I.O. (2012). Fatty acids and alcohols distributions and sources in surface sediments of the Imo River, SE. Niger Delta, Nigeria.


Ekpo, B.O., Oyo-Ita, O. E. Offem, J. O. and Adie, P. A. (2012). Anthropogenic PAHs in sediment-dwelling biota in mangrove areas of the Calabar River,. S.E. Niger Delta, Nigeria. Environment and Natural Resources Research 2, 89 -100.


Oyo-Ita, O.E., Offem, J. O., Ekpo, B.O. and Adie, P. (2013).


Pisani, O., Oros, D. H., Oyo-Ita, O.E., Ekpo, B. O., Jaffe, R. and Simoneit, B. R.T. (2013). Biomarkers in surface sediments of Cross river and estuarine system, SE Nigeria: assessment of organic matter sources of natural and anthropogenic origins. Applied Geochemistry 31, 239-250.


Oyo-ita, O. E, Ekpo, B. O., Oyo-ita, I. O. and Offem, J.O. (2014). Phthalates and other plastic additives in surface sediments of Cross River System, SE, Nigeria; Environmental Implications. Environment


Oyo-Ita, O. E., Ekpo, B. O., Offem, J. O. and Adie, P. A. (2014). Organochlorine pesticides in sediment-dwelling animals in mangrove area of the Calabar River, S E. Nigeria. Environment


*Oyo-Ita, O..E. Oyo-Ita, I. O. and Ugim, S. U. (2013). Distribution and sources of polycyclic aromatic hydrocarbons and sterols in termite nest,


Oyo-Ita, O..E. Oyo-Ita, I. O. (2015). Polycyclic aromatic hydrocarbons in sediment and sediment-dwelling biota from rivers, lakes and estuaries of Niger Delta drainage basin: A review. In: Boone, C. (Ed). Polycyclic aromatic hydrocarbons. Nova Science Inc. Publisher, New York (USA).


Dosunmu, M. I., Oyo-Ita, I. O and Oyo0Ita, O, I, (2016). Risk assessment of human exposure to polycyclic aromatic hydrocarbons via shrimp (Macrobrachium felicinum) consumption along the Imo River catchments, SE Nigeria. Environmental Geochemistry and Health 38(1),1-15 (Springer Science Publisher, UK).


Oyo-Ita, I. O., Oyo-Ita, O. E., Dosunmu, M. I., Camen Dominquez., Bayona, J. J. M., Albaiges, J.


Oyo-Ita, I. O., Oyo-Ita, O. E., Dosunmu, M. I. and Soumaya Elarbaoui (2016). Distribution and historical trends of sedimentary PAHs deposition of the Imo River, SE Nigeria. Priceeding of the 5th International Conference of Biological, Chemical and Environmental Engineering in London 5, 42-46.


Oyo-Ita, O. E. Oyo-Ita, I. O., Sam E, S., Offem, E. I and Ugim, S. U. (2016). Natural and anthropogenic biomarkers in recent dated sediment cores from Refome lake, SE Nigeria: Environmental implications. Environmental Earth Science 75 (21), 1-14 (-Springer Science Publisher, Berlin).


Oyo-Ita, I. O., Oyo-Ita, O. E., Ugim S. U. (2017). Source and toxicological assessment of polycyclic aromatic hydrocarbons in sediments from Imo River, SE Nigeria. Polycyclic Aromatic Compounds 10.1080/10406638 – (Taylor


Orok E. Oyo-Ita., Inyang O. Oyo-Ita and Soumaya E. (2007). Reassessment of Dibenzothiophene as marker for petroleum and coal contamination in sediments from Imo River, SE Nigeria. Environmental Forensic 18(4),285-295 (Taylor


Inyang O. Oyo-Ita, Orok E. Oyo-Ita, Ekpo O. Ikip, Edidiong S. Sam


Inyang O. Oyo-Ita, Orok E. Oyo-Ita (2017). Historic Trend of Polycyclic Aromatic Hydrocarbons Contamination in Recent Dated Sediment Cores from the Imo River, Southeast Nigeria. World Journal of Research and Review 5(4) 05-24.


Oyo-Ita, O. E. (2016). Organic Chemistry with Stereochemistry for Starters. Mahogany Publisher, Aba..


O.E. Oyo-Ita., B.O. Ekpo., U. S. Umana, B.R.T. Simoneit. (2006). Predominance of n-docosane/docosene as molecular indicators of microbial and recent biogenic organic matter incorporation into surface sediments of Cross River Estuary, S.E.Niger Delta of Nigeria. Global Journal of Environmental Sciences 5, 43-48.


Oyo-Ita, O. E., Oyo-Ita, I. O., Ugim S. U. and Nfor, E. (2009). Design, synthesis and characterization of 2(4-benzylidine phenoxy)-2-methylpropanoic acid: a possible potent anti-sickling agent. International Journal of Theoretical and Experimental Chemistry 1, 44-51.


O.E. Oyo-Ita and B.O. Ekpo (2010). Hydrocarbons Biodegradation and Evidence of Mixed Petroleum Source Input to Surface Sediments from the Cross River System, S. E. Nigeria. Global Journal of Environmental Sciences 9, 57-69.


Adie, P. A. Ekpo, B. O., Oyo-Ita, O. E. and Offem, J. O. (2012). Organochlorine pesticides in mangrove sediments of the Calabar River, S.E. Niger Delta, Nigeria. African Journal of Environmental Pollution and Health 9, 34 -42.


Dosunmu, M. I., Oyo-Ita, I. O. and Oyo-Ita, O. E. (2012). Source apportionment and distribution of polycyclic aromatic hydrocarbons in surface sediments of the Imo River near Afam power station: molecular proxy and multi-variate approaches.


Oyo-Ita, O. E., Oyo-Ita, I. O. and Ugim S. U. (2011). Sources and distribution of polycyclic aromatic hydrocarbons in post-flooded soil profile near Afam power station, SE Niger Delta, Nigeria. Soil Science and Environmental Management 7, 35 – 42 (South Africa).


Oyo-Ita, O..E. Oyo-Ita, I. O. and Ugim, S. U. (2012). Distribution and sources of polycyclic aromatic hydrocarbons and sterols in termite nest,


Oyo-Ita, O.E. and Oyo-Ita, I.O. (2012). PAHs depositional history in recent core sediments from Ukwa Ibom lake, SE Nigeria. Environmental Geochemistry and Health 35, 189 – 199.


Oyo-ita, O.E. and Oyo-Ita, I.O. (2012). Fatty acids and alcohols distributions and sources in surface sediments of the Imo River, SE. Niger Delta, Nigeria.


Oyo-ita, O. E, Ekpo, B. O., Oyo-ita, I. O. and Offem, J.O. (2014). Phthalates and other plastic additives in surface sediments of Cross River System, SE, Nigeria; Environmental Implications. Environment


Oyo-Ita, O..E. Oyo-Ita, I. O. and Ugim, S. U. (2013). Distribution and sources of polycyclic aromatic hydrocarbons and sterols in termite nest,


Oyo-Ita, O..E. Oyo-Ita, I. O. (2015). Polycyclic aromatic hydrocarbons in sediment and sediment-dwelling biota from rivers, lakes and estuaries of Niger Delta drainage basin: A review. In: Boone, C. (Ed). Polycyclic aromatic hydrocarbons. Nova Science Inc. Publisher, New York (USA).


Dosunmu, M. I., Oyo-Ita, I. O and Oyo0Ita, O, I, (2016). Risk assessment of human exposure to polycyclic aromatic hydrocarbons via shrimp (Macrobrachium felicinum) consumption along the Imo River catchments, SE Nigeria. Environmental Geochemistry and Health 38(1),1-15 (Springer Science Publisher, UK).


Oyo-Ita, I. O., Oyo-Ita, O. E., Dosunmu, M. I., Camen Dominquez., Bayona, J. J. M., Albaiges, J.


Oyo-Ita, I. O., Oyo-Ita, O. E., Dosunmu, M. I. and Soumaya Elarbaoui (2016). Distribution and historical trends of sedimentary PAHs deposition of the Imo River, SE Nigeria. Priceeding of the 5th International Conference of Biological, Chemical and Environmental Engineering in London 5, 42-46.


Oyo-Ita, O. E. Oyo-Ita, I. O., Sam E, S., Offem, E. I and Ugim, S. U. (2016). Natural and anthropogenic biomarkers in recent dated sediment cores from Refome lake, SE Nigeria: Environmental implications. Environmental Earth Science 75 (21), 1-14 (-Springer Science Publisher, Berlin).


Oyo-Ita, I. O., Oyo-Ita, O. E., Ugim S. U. (2017). Source and toxicological assessment of polycyclic aromatic hydrocarbons in sediments from Imo River, SE Nigeria. Polycyclic Aromatic Compounds 10.1080/10406638 – (Taylor


Orok E. Oyo-Ita., Inyang O. Oyo-Ita and Soumaya E. (2007). Reassessment of Dibenzothiophene as marker for petroleum and coal contamination in sediments from Imo River, SE Nigeria. Environmental Forensic 18(4),285-295 (Taylor


Inyang O. Oyo-Ita, Orok E. Oyo-Ita, Ekpo O. Ikip, Edidiong S. Sam


Inyang O. Oyo-Ita, Orok E. Oyo-Ita (2017). Historic Trend of Polycyclic Aromatic Hydrocarbons Contamination in Recent Dated Sediment Cores from the Imo River, Southeast Nigeria. World Journal of Research and Review 5(4) 05-24.


(LOCAL JOURNAL PAPER)

Oyo-Ita, O. E., Oyo-Ita, I. O., Ugim S. U. and Nfor, E. (2009). Design, synthesis and characterization of 2(4-benzylidine phenoxy)-2-methylpropanoic acid: a possible potent anti-sickling agent. International Journal of Theoretical and Experimental Chemistry 1, 44-51.


30. Dosunmu, M. I., Oyo-Ita, I. O. and Oyo-Ita, O. E. (2012). Source apportionment and distribution of polycyclic aromatic hydrocarbons in surface sediments of the Imo River near Afam power station: molecular proxy and multi-variate approaches.

No Results for Research Works done
No Results for Conferences Attended
No Results for Grants/Awards Received