Ph.D

Water quality assessment of drinking water in Abeokuta Metropolis.
-Determination of organic pollutants on selected dumpsites in Abeokuta Metropolis,
SW, Nigeria.
– Determination of Heavy metals in soil and water in the vicinity of mechanic village in
Abeokuta.
-Identification and determination of polycyclic aromatic hydrocarbons (PAHs) from
diesel engine exhaust.
-Determination of BTEX and polycyclic aromatic hydrocarbons (PAHs) in petrol engine
exhaust.
-Determination of heavy metal concentration in selected brands of canned foods.
– Qualitative assessment of greywater and its reuse for irrigation of vegetation.
Determination of Cr from wastewater using sugarcane fibre
– Determination of nicotine in tobacco leaves.
– Comparative studies of biogas yield using poultry droppings and cow dung.
– Persistent organic pollutants from incinerator soil in Abeokuta Metropolis.
– Determination of heavy metals and physico-chemical properties in pharmaceutical

effluents.
– Environmental and Health Implications of Diesel Exhaust Particles.
– The Bio-protective efficacy of Garlic on Wister Rats exposed to DEP.
– Heavy Metals in crude oil polluted sites.
– Phthalate Ester in Baby Toys.
– Effect of Cement Factory on Air, Water and Plants.
– Polychlorinated Biphenyls in dumpsite soil and leachate
– Determination of Phenol in Textile wastewater.
– Determination Polychlorinated Biphenyl in Leachate and Groundwater from Dumpsite.
– Determination of Polycyclic Aromatic Hydrocarbon (PAHs) in Charcoal production in
Alabata and Environs.

University of Ibadan, Postgraduate School

Member, Institute of Chartered Chemists of Nigeria
Member, Chemical Society of Nigeria
Member, Science Association of Nigeria
Member, Environmental Health Scientist Association, Nigeria
Member, The Society of Environmental Toxicology and Chemistry

Omotugba S. K., Meduna A. J., Olayinka O. O., Akhigbe B. I., Ajibade, E. A and Inuwa M. (2009):
Physicochemical Study of Borehole Water in Some Selected Areas of Kainji Town. Book of
Abstract (2009). 44 th Annual Conference and 50 th Anniversary Celebration Science
Association of Nigeria (SAN). Adebowale, O.A. and Ogunniyi, A.B. (Eds.). 1-2. Published
by SAN

Olafadehan, O.A. Olafadehan, O.O., Obun, C.O., Yusuf, A.M., Adeniji, A., Olayinka, O.O., and Abdullahi.
B. (2009): Intake and Digestibility of Red Sokoto Goats Fed Varying Proportions of
Andropogon Gayanus and Pterocarpus Erinaceus Forage. Proceedings of 14 th Annual
Conference of Animal Science Association of Nigeria (ASAN). Akinlade, J.A., Olayemi,
T.B., Rafiu, T.A., Akinwunmi, A.O., Aderinola, O.A., Ojebiyi, O.O and Odunsi, A.A. (Eds.).
572-575. Published by ASAN.

Yusuf, A.M., Garba, M.B., Irokanulo, U.O., Olayinka, O.O., Fajobi, A. Obun, O. and Adeleke. A.M. (2010):
Effect of Mango (Magnifera Indica) Seed Kernel Meal Based Diets on the Heamatology of
Grower Rabbits (2010). Proceeding of 35 th Annual Conference of the Nigeria Society for
Animal Production (NSAP).Babayemi, O.J., Abu, O.A. and Ewuola, E.O. (Eds.). 194-196.
Published by NSAP

Adedeji, O.H., Olayinka, O.O. and Awojobi, T.G. (2019): Assessment of Radionuclides and Potential
Health Risk of Exposure to Heavy Metals in Soils of Residential Areas in Odeda, Nigeria.
Proceeding of the 2 nd International Medical Geologists Association (IMGA-NigeriaChapter)
Olatunji, A.S. and Olajide-Kayode, Jerry.(Eds.). 12-14. Published by IMGA.
MAJOR CONFERENCES ATTENDED WITH PAPER READ
– Olayinka, O.O. and Adedeji, O.H. (2014): Air and Heavy Metal Pollution around a Steel Foundry
in Ogijo, Ogun State, Nigeria. Paper presented at Conference on Environmental Health
Sciences- Ibadan 2014. 10 th November to 14 th November 2014, Adewole Hall, CESDEV,

Bodija, Ibadan.
– Olayinka, O.O, Adedeji, O.H., Akinyemi, A.A. and Oresanya, O.J. (2015): Heavy Metals and PCB
Concentrations in Eleyele Lake, Ibadan, Oyo State, Nigeria. Paper presented at 3rd Annual
Conference on Environmental Health Sciences held at the University of Ibadan, Nigeria,
November 1 -5, 2015
– Adedeji, O.H., Olayinka, O.O., Osunde, E.O. and Badejo, A.A. (2015): Environmental Pollution
around Petrol Stations in Abeokuta Metropolis, Ogun State, Nigeria. Paper presented at
3rd Annual Conference on Environmental Health Sciences held at the University of
Ibadan, Nigeria, November 1 -5, 2015
– Olayinka, O.O., Adedeji, O.H. Tope-Ajayi, O.O. and Ogundiran, T. (2016): Urban
Flood Risk and Vulnerability Mapping around Olodo River, Ibadan, Nigeria.
Paper Presented at the 57 th Annual Conference of the Nigerian Geographical
Association (ANG) University of Lagos 2016. 10-15th April 2016
– Olayinka, O.O. and Egbeyemi, M.M. (2021): Concentration of Phenolic Compounds in
the Effluent and Water of a local Textile Industry. Paper presented at 9 th Annual
Conference on Environmental Health Sciences held at the Adewole Hall,
CESDEV, Bodija, Ibadan, November 21 -25, 2021.

Adebowale, K. O., Olu-Owolabi, B. I, Olayinka, O.O. and Lawal, O.S. (2005): Effect
of Heat-Moisture Treatment and Annealing on Physico-Chemical Properties of
Red Sorghum Starch. African Journal of Biotechnology. 4(9):928-933.

2. Olayinka, O.O., and Adebayo, E.A. (2006): Extraction and Analysis of the Oil obtained
from Anacardium occidentale (Cashew nut). International Journal of Chemistry.
16(4):241-244.

3. Olayinka, O.O., B.B. Adeleke., Ajayi, O.A., Onifade, A.J. (2007): Proximate Analysis and
Physicochemical Properties of Cola millenii Seed Oil. International Journal of
Chemistry. 17(1):73-75.

4. Olayinka, O.O., Adebowale, K.O., Olu-Owolabi, B.I. (2008): Effect of Heat-Moisture
Treatment on Physicochemical Properties of White Sorghum Starch. Journal of
Food Hydrocolloids. 22:225-230.

5. Olayinka, O.O. and Ipeaiyeda, A.R. (2011): Chromium and lead concentrations in
tomatoes (Solanum lycopersicum) and red pepper (Capsicum frutescens)
cultivated in roadside farmland around high traffic density area of Ibadan,
Nigeria. Soil and Sediment, Contamination. 20:1-11.

6. Olayinka, O.O., I. B. Ariyo, T .R. Fasola and J.A. Oyeniran. (2011): Phytochemical
Constituents, Anti-Microbial Activity and Elemental Analysis of Zanthoxylum
zanthoxyloides (Lam.) Watern. Journal of Forestry Research and Management.
8:80-91.

7. Olayinka, O.O., Olu-Owolabi, B.I. and Adebowale, K. O. (2011): Effect of Succinylation
on the Physicochemical, Rheological, Thermal and Retrogradation Properties of
Red and White Sorghum Starches. Journal of Food Hydrocolloids. 25(2):515-
520.

8. Ashifat, A.A., Omotugba, S.K., Kehinde, A.S. Olayinka, O.O. and Edugbola, G.O.
(2012): Proximate Evaluation of Nutritional Value of Mango (Magnifera indica).

International Journal of Research in Chemistry and Environment. 2(4): 244
245.

9. Olayinka, O.O., Kareem, A.M., Ariyo, I.B., Omotugba, S.K. and Oyebanji, A.O. (2012):
Antioxidant Contents (Vitamin C) of Raw and Blanched Different Vegetable
Samples. Food and Nutrition Sciences. 3(1):18-21.

10. Adedeji, O.H. and Olayinka, O.O. (2013): Heavy Metal Concentrations in Urban
Stormwater Runoff and Receiving Stream. Journal of Environment and Earth
Sciences. 3(7): 141-150.

11. Adedeji, O.H., Olayinka, O.O. and Oyebanji, F.F. (2013): Assessment of Traffic Related
Heavy Metals Pollution of Roadside Soils in Emerging Urban Centres in Ijebu-
North Area of Ogun State, Nigeria. Journal of Applied Science and
Environmental Management. 17 (4):509-514.

12. Olayinka, O.O., Adedeji, O.H. and Oladeru, I.B. (2013): Water Quality and
Bacteriological Assessment of Slaughterhouse Effluent on Urban River in
Nigeria. Journal of Applied Science in Environmental Sanitation. 8(4):277-286.
13. Olayinka, O.O., Adebowale, K.O. and Olu-Owolabi, B.I. (2013): Physicochemical
Properties, Morphological and X-Ray Pattern of Chemically Modified White
Starch. (Bicolor-Moench). Journal of Food Science and Technology. 50(1):70-
77.

14. Adedeji, O.H., Olayinka, O.O. and Nwanya, F.C. (2014): Soil and Water Pollution
Levels in and Around Urban Scrapyards. Journal of Environmental Science,
Toxicology and Food Technology, 8(4). Ver. II: 01-08.

15. Adedeji, O.H. and Olayinka, O.O. (2014): Concentrations of Heavy Metals in Dumpsite
Leachate and Effects on Adjacent Stream on Ajakanga, Ibadan, Nigeria. Journal
of Applied Science in Environmental Sanitation. 9(2):113-122.

16. Adedeji, O.H. and Olayinka, O.O. (2014): Micro-Pollutants in Urban Residential Roof

Runoff: Environmental and Health Implications. 8(2) Ver.III: 55-63.

17. Olayinka, O.O. Adedeji, O.H. and Sanni, S.S. (2014): Water Quality of Hand-Dug Wells
at Close Proximity To Pit Latrine And Its Health Implication in Isara–Remo.
Journal of Environmental Science, Toxicology and Food Technology. 8(6) Ver.
II:56-64.

18. Olayinka, O.O., Adedeji, O.H. and Dada, O. (2014): Determination of Concentrations of
Heavy Metals in Municipal Dumpsite Soil and Plants at Oke-Ogi, Iree, Nigeria.
International Research Journal of Pure & Applied Chemistry. 4(6): 656-669.
19. Olu-Owolabi, B.I., Olayinka, O.O., Adegbemile, A.A. and Adebowale, K. O. (2014):
Comparison of Functional Properties between Native and Chemically Modified
Starches from Acha (Digitaria Stapf) Grain . Food and Nutrition Sciences.
5:222-230.

20. Olayinka, O.O. and Adedeji, O.H. (2014): Concentration of Heavy Metals in Soils and
Water near Some Mechanic Villages in Abeokuta Metropolis, Ogun State,
Nigeria. Journal of Advances in Chemistry. 8(3):1667-1679.

21. Adedeji, O.H. and Olayinka, O.O. (2015): Assessment of Groundwater Contamination
by Textile Effluent of Discharges in Ikorodu, Nigeria. Applied Environmental
Research. 37 (1): 35-48.

22. Olayinka, O.O., Adedeji, O.H. and Ajibola, F.O. (2015): Monitoring Gaseous and
Particulate Air Pollutants near Major Highways in Abeokuta, Nigeria. Journal
of Applied Science and Environmental Management. 19(4):751-758.

23. Olayinka, O.O, Adedeji, O.H. and Balogun, Yewande. (2015): Air and Heavy Metal
Pollution around a Steel Foundry in Ogijo, Ogun State, Nigeria. Journal of
Science Research, 14:9-16.

24. Olayinka, O.O., Adedeji, O.H. and Ipeaiyeda, R.A. (2015): Determination of Polycyclic
Aromatic Hydrocarbons (PAHs) on selected Dumpsites in Abeokuta Metropolis,
SW, Nigeria. Applied Environmental Research. 37 (3): 33-48.

25. Olayinka, O.O., Adebowale, K.O. and Olu-Owolabi, B. I. (2015): Effect of Chemical
Modifications on Thermal, Rheological and Morphological Properties of Yellow
Sorghum Starch. Journal of Food Science and Technology. 52(12): 8364- 8370.
26. Adedeji, O.H., Olayinka, O.O., and Tope-Ajayi, O.O. (2016): Mapping of Traffic-
Related Air Pollution Using GIS Techniques in Ijebu-Ode, Nigeria. Indonesian
Journal of Geography. 48 (1): 76 – 86.

27. Olayinka, O.O., Adedeji, O.H., Oresanya, O.J. and Alabi-Thompson, O.F. (2016):
Environmental and Health Impact of Cement Factory Production in Ibese, Ogun
State, Nigeria. Applied Environmental Research. 38 (2): 93-110.

28. Adedeji, O.H., Olayinka, O.O., and Oladimeji, O (2017): Physicochemical and
Microbiological Examination of Hand-Dug Wells, Boreholes and Public Water
Sources in Selected Areas of Ibadan, Nigeria. Journal of Applied Science and
Environmental Management. 21(3): 576-584.

29. Adedeji, O.H., Olayinka, O.O., Badejo, A.A. and Osunde, E.O. (2016): Assessing
Heavy Metals in Soil and Groundwater Around Petrol Stations in Abeokuta
Metropolis, Nigeria. Journal of Science Research, 15: 41-48.
30. Adedeji, O.H., Olayinka, O.O., Badejo, A.A. and Adedokun, N. (2017): An Assessment
of Ambient Air Quality Around Diesel Powered Telecommunication Base Stations in
Abeokuta, South-western Nigeria. International Journal of Ecology and
Environmental Studies, 4(1), 6-19.

31. Olayinka, O.O., Akande, O.O., Bamgbose, K and Adetunji, M.T. (2017): Physicochemical
Characteristics and Heavy Metal Levels in Soil Samples Obtained from Selected
Anthropogenic sites in Abeokuta, Nigeria. Journal of Applied Science and Environmental
Management. 21(5): 883-891.

32. Oluwafunmilayo O. Olayinka, Hakeem Oludare Adedeji, Adeolu Akanji Akinyemi, Olusola
Juwon Oresanya. (2017): Assessment of the Pollution Status of Eleyele Lake, Ibadan,
Oyo State, Nigeria. Journal of Health and Pollution, 7 (15): 51-62.

33. Adedeji, O.H., Olayinka, O.O., and Tope-Ajayi, O.O and Awosika, D.A. (2017): Spatial Distribution
and Health Risk Assessment of Heavy Metals in Urban Parks and Gardens Soils in Lagos
State, Nigeria. Journal of Agricultural Science and Environment, 18 (1&2) 16-35.
34. Oluwafunmilayo O. Olayinka, Adetomi Adeola Adewusi, Olarenwaju, Olusoji Olujimi,
A..A.Aladesida (2018): Concentration of Polycyclic Aromatic Hydrocarbons and
Estimated Human Health Risk of Water Samples Around Atlas Cove, Lagos, Nigeria.
Journal of Health and Pollution, 8 (20):1-12.

35. Azeez, J. O., Ojewande, B. O. Olayinka, O. O. and Adesodun, J. K. (2018): Impact Assessment
of Organic Farming on Soil Nutrients and Heavy Metal Content. Pertanika
Journal Tropical Agricultural Science 41 (4): 1811-1831.

36. Soyingbe,A.A., Olayinka, O., Bamgbose, K. and Adetunji, M.T. (2019): Effective
Management of Faecal Sludge through Co-Digestion for Biogas Generation.
Journal of Applied Science and Environmental Management. 23(6): 1159-1168.
37. O. Terebo, O.O Olayinka , O Bamgbose , W.O Abdul , O. Martins (2019):
Physicochemical Quality of Borehole water of selected Settlements in the Coastal
Area of Ondo-State, Nigeria Journal Chem ical Society. Nigeria, 44 (5): 846 –
857.

38. A.A. Soyingbe , O Olayinka , O Bamgbose and M.T Adetunji (2019): Compositional
Analysis of Biogas Produced from Faecal Sludge Co-digested with organic
feedstocks Journal. Chemical Society. Nigeria, 44 (5): 858 -870.

39. Adedeji, O.H., Olayinka, O.O., and Tope-Ajayi, O.O (2019): Spatial Distribution and
Health Risk Assessment of Soil Pollution by Heavy Metals in Ijebu- Ode, Nigeria.
Journal of Health and Pollution, 9 (22), 1-14.

40. Oluwafunmilayo O. Olayinka, Adetomi Adeola Adewusi, Olarenwaju, Olusoji Olujimi,
A..A.Aladesida (2019): Polycyclic Aromatic Hydrocarbons in Sediment and Health
Risk of Fish, Crab and Shrimp Around Atlas Cove, Nigeria. Journal of Health
and Pollution, 9 (24): 1-21.

41. Olanrewaju Olujimi, Rhoda Ayoola, Oluwafunmilayo Olayinka, Oluwatosin Dosunmu,
Solomon Rotimi, Adeyinka Aladesida (2020): Evaluation of antioxidant enzymes
performances and DNA damage induced by bisphenol A and diisobutylphthalate
in Hyperiodrilus africanus-earthworms. Journal of Emerging Contaminants, 6:
1-9.

42. O.O. Olayinka, O.H. Adedeji and S. A. Ahmed. (2020): Oil spillage measures caused
drastic reduction in total petroleum hydrocarbon levels in petroleum depot in
Ibadan, Southwestern Nigeria. Cogent Environmental Science, 6: 1826744.
43. O.H. Adedeji, O. O. Olayinka, T. Ogundiran and O. O. Tope-AJayi (2020): Urban Flood
Impacts, Flood Water Quality and Risk Mapping of Olodo area, Ibadan,Nigeria.
Journal of Natural Science, Engineering and Technology, 19(1&2): 56-73.44.
44. O. H Adedeji, O.O. Olayinka, O.O. Tope-Ajayi, A.S. Adekoya (2020): Assessing spatial
distribution, potential ecological and human health risks of soil heavy metals
contamination around a Trailer Park in Nigeria. Scientific African, 10-1-14.
45. Adedeji, O.H., Olayinka,O. O., Badejo, A.A. and Osunde, E.O. (2022): Spatial distribution
and Environmental Risk Assessment of Petrol Stations in Abeokuta Metropolis.
Journal of Applied Science and Environmental Management. 26 (11) 1843-
1850.

46. Adedeji, O.H., Olayinka, O.O., Tope-Ajayi, O.O and Azeez, O.I. (2020): Land use/Land
cover changes due to Quarrying in Odeda Local Government Area of Ogun State,
Nigeria: An Assessment and Implication for Rural Livelihood. Journal of
Meteorology and Climate Science, 18 (1) 113-122.

47. O. Terebo, A.A. Soyingbe, O.Olayinka, O Bamgbose (2022): Microbial Quality of
Borehole water and prevalence of water-related diseases in Selected Settlements

in the Coastal Area of Ondo-State, Nigeria. International Journal of Advanced
Research in Science, Engineering and Technology, 9(6):1-9.

48. O. Terebo, O.O Olayinka, Soyingbe A.A, and O Bamgbose (2022): Endemicity of water-related
diseases and Efficacy of Questionnaire based Indices in Selected Riverine settlements of
Ondo-State, Nigeria. Palgo Journal of Biological Science, 1(1):1-10.

49. O. Terebo, O.O Olayinka, Soyingbe A.A, and O Bamgbose (2022): Levels of Polyaromatic
Hydrocarbons in Borehole Water of Selected Settlements in the Coastal Area of Ondo-
State, Nigeria. International Journal of Current Research and Applied Studies, 1(2): 74-
82.