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  • Area of Specialization: Physical Chemistry
  • Department of Chemistry

  • Dr. Mrs. Loretta Chukwudumebi Overah received her Bachelor of Science, (B.Sc.) degree in Chemistry from Delta State University, Abraka, Nigeria in 2001and served as an Assistant Lecturer in the College of Agriculture, Lafia in Nasarawa State under the National Youth Service Corps (NYSC) scheme. She obtained her Masters' degree in Physical Chemistry from The University of Ibadan, Nigeria in 2009. In 2015, she bagged a Ph.D degree in the area of Physical/Nanochemistry partly at the University of Ibadan (awarding institution) and The University of Kwazulu-Natal, Durban (Bench work/2013). Her teaching and research career started in 2007 as a Graduate Assistant and she is currently a Senior Lecturer. Her research focus is on thermodynamics, kinetics and isotherms of adsorption (remediation studies) and corrosion inhibition processes, measurements of Heavy metals, dyes, PAHs and PCBs in food, water and soil and their effects. She is currently investigating magnetic nano composites as adsorbents for water pollutants. She has about 30 peer-reviewed research articles in reputable journals and has supervised and co-supervised both undergraduate and post graduate students' projects. She is a member of various professional societies including Chemical Society of Nigeria (CSN), American Chemical Society (ACS), and Institute of Chartered Chemists of Nigeria (ICCON).
    My Publications
  1. Osabohien, E.; Overah, L.C.; Anikwushe, Y.; Eguvbe, P. (2024) Comparative adsorption of Pb(II) from aqueous media using activated carbon from African star apple (Chrysophylum albidum) seed shell and pawpaw (Carica papaya) seed, Nigeria Journal of Science and Environment/Faculty of Science, Delta State University, Abraka Vol.22 () Pages: 161-179

  2. Overah, L.C.; Ujor, A.; Anwuli, A. (2024) (2024) Adsorption Isotherms and Thermodynamics Of Thymol Blue Removal from Aqueous Solution Using Native Pear (Dacryodes edulis) Seed Biomass, Dutse Journal of Pure and Applied Sciences (DUJOPAS)/Faculty of Science, Federal University of Dutse, Vol.10(1b) Pages: 293-302

  3. Overah, L. C; Olatunde, M A; Ujor, A.; Ikpefan, O. J (2023) Surface Equilibrium and Thermodynamics Implications of the Corrosion Inhibition of Mild Steel In Acid Medium Using Quinine Inhibitor., Dutse Journal of Pure and Applied Sciences/Faculty of Science, Federal university of Dutse; Vol.9 (1b) Pages: 22-33

  4. Overah, L.C.; Omoko, V.I.; Ujor, A (2023) Cadmium (II) Sorption Using Unmodified and Thioglycol Acid- Modified Plantain (Musa Paradisiaca) Stalk, Dutse Journal of Pure and Applied Sciences (DUJOPAS)/Faculty of Science, Federal University of Dutse, Vol.9 (4b) Pages: 314-328

  5. Overah, L.C.; Ebite, C. ;Ujor, A. (2023) Malachite Green Sequestration From Aqueous System by Untreated Dacryodes edulis Seed., Scientia Africana/Faculty of Science, University of Port Harcourt 10.4314/sa.v22i2.7 Vol.22 (2) Pages: 59-74

  6. Overah L. C. (2021) Adsorption Isotherms and Kinetics Studies of a Cationic and Anionic Dye Removal From Aqueous Solution onto Raphia farinifera Biomass , Nigeria Journal of Science and Environment/ Faculty of science, Delta State University, Abraka
    Vol.xx Pages: xx - xx

  7. Iwebue C.M.A.; Tesi, O Godswill; Overah L.C; Emoyan O.; Nwajei G.E.; Martincigh B.S (2020) Effects of flooding on the sources, spatiotemporal characteristics and Human Health Risks of Polycyclic Aromatic Hydrocarbons in Flood plain soils of the lower parts of the River Niger, Nigeria. , Polycyclic Aromatic Compounds/Taylor and Francis
    DOI: 10.1080/10406638.2017.1403329 Vol.40 (2) Pages: 228-244

  8. Overah L.C (2020) Nonlinear Kinetic and Equilibrium Adsorption Isotherm Study of Cadmium (II) Sorption by Dacryodes edulis Biomass , Nigerian Journal of Basic and Applied Sciences/Faculty of Science, Usman DanFodio University, Sokoto,
    DOI: Vol.28 (2) Pages: 10-19

  9. Overah L.C; Iwegbue C.M.A; Babalola J.O.; Martincigh B.S. (2019) Fabrication and characterization of a Fe3O4/Raphia farinifera nanocomposite for application in heavy metal adsorption , Environmental Technology and Innovation./Elsevier, Netherland Vol.13 Pages: 11-29

  10. Iwegbue C.M.A; Tesi G.O.; Overah L.C,; Nwajei G.E.; and Martincigh B.S. (2018) Chemical fractionation and mobility of metals in floodplain soils of the lower reaches of the River Niger, Nigeria. , Transactions of the Royal Society of South Africa/
    DOI: 10.1080/0035919X.2017.1361483 Vol.73 (1) Pages: 90 - 109

  11. Overah L. C. (2018) Concentration of metals in some food seasoning agents consumed in Nigeria. , Nigerian Journal of Science and Environment/ Faculty of Science, Delta State University, Abraka
    Vol.16(1) Pages: 93 - 97

  12. Eyenubo, B.O & Overah, L.C. (2018) Biosorption studies of cadmium (II) ions from aqueous solution by Musa paradisiaca stalk , MAMBILLA: Journal of Sciences and Environment/Faculty of Science, Taraba State University
    Vol.5(1) Pages: 102 - 109

  13. Overah L.C.; Odiachi J.I. (2017) Evaluation of Dacryodes edulis (native pear)seed for Pb(II) sorption from aqueous solution. , Journal of Applied Science and Environmental Management/(World Bank Assisted National Agricultural Research Program, UNIPORT)
    Vol.21 (1) Pages: 186-199

  14. Iwegbue C.M.A.; Bassey F.I.; Tesi G.O.; Overah L.C.; Onyeloni S.O.; Martincigh B.S. (2015) Concentrations and Health Risk Assessment of Metals in Chewing gums, Peppermints and Sweets in Nigeria. , Journal of Food Measurement and Characterization. /Springer
    Vol.8 (4) Pages: 17-25

  15. Iwegbue C.M.A; Overah L. C.; Tesi G. O.; Bassey F.I.; Martincigh B. S. (2015) Polycyclic Aromatic Hydrocarbon Profiles of Some Brands of Canned Fish in the Nigerian Market. , Human and Ecological Risk Assessment /Taylor and Francis
    Vol.21 (1): Pages: 157 – 168

  16. Iwegbue .M.A; Obi C.; Tesi G. O., Bassey F. I.; Overah L. C.; Martincigh B. S. (2015) Concentrations of Polycyclic Aromatic Hydrocarbons in some commercial brands of candies and chocolates in Nigeria. , Quality assurance and safety of crops and foods./ Wageningen Academic Publishers USA
    Vol.7 (5): Pages: 661-676

  17. Iwegbue C.M.A.; Tesi G. O.; Overah L. C.; Bassey F. I.; Nwadukwe F.; Martincigh. B.S. (2015) Concentrations and profiles of polycyclic aromatic hydrocarbons in some popular fish species in Nigeria. , Journal of food protection/International Association for food Protection (USA).
    doi:10.4315/0362-028X.JFP Vol.78 (3) Pages: 554 - 560

  18. Iwegbue C.M.A ; Agadaga H.; Bassey F.I.; Overah L.C.; Tesi,G. O.; and Nwajei G.E (2015) Concentrations and Profiles of Polycyclic Aromatic Hydrocarbons in Some Commercial Brands of Tea, Coffee and Cocoa-Based Food Drinks in Nigeria., International Journal of Food Properties/Taylor and Francis
    Vol.18 Pages: 2124–2133

  19. Iwegbue C.M.A.; Overah L.C.; Bassey F.I.; Martincigh B.S. (2014) Trace metal concentrations in distilled alcoholic beverages and liquors in Nigeria. , Journal of institute of Brewing Science/ Wiley online Library
    Vol.120 (4) Pages: 521 - 528

  20. Iwegbue, C.M.A.; Ossai, E.K.; Overah, L.C; Nwajei, G.E. (2013) Trace metal content in some milk and milk Products in Nigeria., Journal of Environmental science and Engineering Vol.55 (1) Pages: 101 -107

  21. Iwegbue, C.M.A.; Nwozo, S.O; Overah, L.C; Bassey, F.I.; Nwajei, G.E. (2013) Concentration of selected metals in some ready-to-eat foods consumed in Southern Nigeria; Estimation of Dietary intakes and Target hazard quotients., Journal of Agriculture, Food Science and Technology/ Turkish Science and Technology, Turkey Vol.1 (1) Pages: 1 - 7

  22. Iwegbue C.M.A, Overah L.C. Opuene K, Ossai E.K., Nwajei G.E. (2013) Distribution of metals in urban street dust in Benin City, Nigeria. , Pakistan Journal of Scientific and Industrial Research Series A Physical Science/PCSIR-Scientific Information Centre Pakistan
    Vol.56(3) Pages: 167-175

  23. Iwegbue, C.M.A.; Nwozo, S.O; Overah, L.C; Ossai, E.K.; Mkpado, C. I.; Osazuwa, O. & Nwajei, G.E. (2012) Concentration of Selected Metals in chicken eggs from commercial farms in southern Nigeria, Toxicological and Environmental Chemistry/ Taylor and Francis, UK
    Vol.94 (6) Pages: 1152 - 1163

  24. Overah L. C.; Iwegbue, C.M.A.; Ossai, E.K.; Nwajei, G.E. (2012) Trace elements concentration in water and aquatic biota from Ase creek in Niger Delta , Journal of Applied Science and Environmental Management/ World Bank Assisted National Agricultural Research Program, UNIPORT Vol.16(1) Pages: 5 - 10

  25. Iwegbue C. M.A.; Tesi G.O. ; Bassey F.I. ; Overah L.C.; Nwajei G. E. (2012) Heavy metal contents in some brands of cigarette and marijuana (Canabis sativa) in Nigeria. , International Journal of Natural and Applied Sciences/ Faculty of Science, University of Calabar
    Vol.7(2) Pages: 21 - 26

  26. Overah L.C.; Iwegbue C.M.A; Ossai E.K and Nwajei G. E (2012) Trace elements in sediments of selected gutters and bar – beach, Lagos, Nigeria, Journal of Applied Science and Environmental Management/ World Bank Assisted National Agricultural Research Program, UNIPORT Vol.16(3) Pages: 18 - 25

  27. Iwegbue, C.M.A.; Overah, L.C; Ebigwai J.K.; Nwozo, S.O.; Nwajei, G.E.; Eguavoen O. (2011) Heavy metal contamination of some vegetables and spices in Nigeria., International Journal of Biological and Chemical Sciences/ International Formulae group Cameroun Vol.5 (2) Pages: 766 - 773

  28. Overah L.C (2011) Biosorption of Cr (III) from aqueous solution by the leaf biomass of Calotropis procera/, Journal of Applied Science and Environmental Management/(World Bank Assisted National Agricultural Research Program, UNIPORT)
    Vol.15 (1) Pages: 87-95

  29. Iwegbue C.M.A; Nwajei G.E.; Ogala J.E.; Overah L.C. (2010) Determination Of Trace Metal Concentration In Soil Profiles Of Municipal Waste Dumps In Nigeria. , Journal of Environmental Geochemistry And Health/Springer, Newyork)
    DOI 10.1007/s10653-010- 9285y Vol.32 Pages: 415 – 430

  30. Iwegbue C.M.A; Nwozo S.O; Overah L.C; Nwajei G.E. (2010) Survey of trace elements composition of commercial infant formulas in Nigerian market. , Journal of Food additives and Contaminants: Part B/Taylor and Francis, UK
    DOI: 10.1080/19440049.2010.497502 Vol.3(3) Pages: 163 -171.