TITLE (PROF/DR/): PROF.

NAME: OLUSEGUN OPEYEMI AYEJUYO

POSITION: PROFESSOR                                         SPECIALISATION: ANALYTICAL CHEMISTRY

EDUCATION/TRAINING (Begin with Bachelor’s degree or other initial professional education, such as nursing, include postdoctoral training and residency training if applicable. Add/delete rows as necessary.)

INSTITUTION AND LOCATION	DEGREE (if applicable)	Completion Date MM/YYYY	FIELD OF STUDY
University of Benin, Benin-City Nigeria	B.Sc.	07/1985	Chemistry
University of Ibadan,  Nigeria	M.Sc.	09/1987	Analytical Chemistry
University of Ibadan,  Nigeria	Ph.D.	05/1995	Analytical Chemistry
Gallille College, Mizra Israel	Diploma	09/2008	Environmental Manmgement

Personal Statement

Prof. Olusegun Ayejuyo has spent the last twenty-six years contributing to research in the field of Analytical/Environmental Chemistry. He is a member of the Chemical Society of Nigeria and Royal Society of Chemistry and  he has mentored over 100 Postgraduate students. He has over 65 publications and  he has won  and managed three grants and scholarship. His current research in Analytical and Environmental Chemistry is focused on the development of sensitive novel analytical methods for trace analyses and determinations of organic/inorganic contaminants in the environment. Specifically, HPLC, GC-equipped with ECD, AAS and UV-Visible spectrophotometric methods are being utilised to detect, identify and quantify emerging contaminants such as Persistent Organic Pollutants, Polycyclic Aromatic Hydrocarbons, and the Potentially Toxic Metals in multimedia samples..  

Positions, Scientific Appointments, and Honours

Professor: University of Lagos, Akoka  2015

Acting Dean, Faculty of Science Dec 2024/May 2025

Head, Department of Chemistry August 2022-

Member, African Regional  Standard Organisation (ARSO)

Editor-in-Chief, Faculty of Science Journal 2019- 

Chairman, Faculty BMAS Review Committee 2018 

Senate Representative on the Board of Distance Learning Institute 2018- 

Coordinator, Master of Environmental Management (2009 – 2016) 

Consulting Environmental Analyst, UNILAG CONSULT 2009- 2014 

Reviewer for: Journal of the American Oil Chemists’ Society

Fresenius Journal of Analytical Chemistry

Environmental Monitoring and Assessment Journal.

Chairman, Standard Organisation of Nigeria (SON) Technical Committee on Draft Standards for Natural waters and Beverages September 2019-Date

TETFund 2022 Grant: Legact Air Pollutants

TETFund 2022 Grant:Air Pollution in Indoor dust

TETFund 2020 Grant: Boiconversion of agro and textile waste to chemicals of industrial use.

5th Nigerian Merit Gold Award for Productivity (2013)

University Central Research Grant: Environmental Oestrogens and Androgens: Occurrence and Biological Effects in Organisms inhabiting the Lagos Lagoon Ecosystem (2011).

Israeli Scholarship Award: Environmental Management Training Programme, Galilee College, Mizra, Israel(2008).

Aldrich Chemical Company: Recognition of work on Garcinia kola and cola acuminata, (1994).

Member, National Technology Forum and Techmart, Wealth Creation through Technology and Commercialisation of R and D Results and Innovations Lagos 2000.

Selected Most Recent Publications /Contributions to Knowledge

1. Akinrinade, OE, F. O. Agunbiade, R. A. Alani and Ayejuyo,OO (2024) Implementation of the Stockholm Convention on Persistent Organic Pollutants (POPs) in Africa – Progress, Challenges, and Recommendations after 20Years, Sci.: Adv., , DOI: 10.1039/D3VA00347G.
2. Nnamdi D. Menkiti, Chukwuemeka Isanbor, Olusegun Ayejuyo, Louis K. Doamekporc and Emmanuel O. Twume(2023) Time -Dependent multivariate and spectroscopic characterization of oil residue in Niger Delta soil. RSCAdvances 12, 12258
3. Nsikak U.Benson , Omowunmi H.Fred-Ahmadu and Olusegun O.. Ayejuyo (2022) Data on macro(micro)plastics and hydrophobic organic contaminants in the Gulf of Guinea coastal psammitic beaches. Data in Brief 108623 https://doi.org/10.1016/j.dib.2022.1086233.
4. Fred-Ahmadu, O.H., Ayejuyo, O. O., Tenebe, I. and Benson, N.U. (2022) Occurrence and distribution of micro(meso) plastic-sorbed heavy metals and metalloids in sediments, Gulf of Guinea coast (SE Atlantic), Science of the Total Environment 813,152650 http://dx.doi.org/10.1016/j.scitotenv.2021.152650
5. Benson, N, Fred-Ahmadu, O. H. and Ayejuyo, O. (2022), “Microplastics adsorbed hydrophobic organic contaminants in lagoon and beach sediments.”, Mendeley Data, V1, doi:10.17632/b9fb98hsmb.                                                                                                     Collaborators/ Networks (International inclusive)                                                                                                                                           World Bank Colaboration on Center of Excellence For Environmental Standards Air Quality, Africa                                              University of Birmingham Pollution Laborator