Clement Ogunkunle
@unilorin.edu.ng
Associate Professor, Faculty of Life Sciences
Others
University of Ilorin
RESEARCH, TEACHING, or OTHER INTERESTS
Ecology, Environmental Science, Pollution, Plant Science
48
Scopus Publications
Scopus Publications
- Seasonal variation and human health risk assessment of potentially toxic elements in pharmaceutical effluents around Ilorin metropolis, Nigeria
Hussein K. Okoro, Muyiwa M. Orosun, Oriade F. Anuoluwa, Clement O. Ogunkunle, Kingsley O. Iwuozor, and Ebuka Chizitere Emenike
Springer Science and Business Media LLC - Human and ecological risk assessments of potentially toxic elements in sediments around a pharmaceutical industry
Hussein K. Okoro, Muyiwa M. Orosun, Salman A. Umar, Khursheed Muzammil, Clement O. Ogunkunle, Kingsley O. Iwuozor, Ebuka Chizitere Emenike, Saiful Islam, Jane C. Ngila, and Caliphs Zvinowanda
Elsevier BV - Foliar Application of Thidiazuron Alleviates Cd Toxicity by Modulating Stress Enzyme Activities and Stimulating Pigment Biosynthesis in Cajanus cajan (L.)
Olusanya A. Olatunji, Gideon O. Okunlola, Abdulfatai B. Rufai, Idowu A. Obisesan, Adedapo Adeyinka, Dong Wang, Clement O. Ogunkunle, and Mahboob A. Jimoh
Springer Science and Business Media LLC - Nanoremediation of inorganic contaminants in soils: applications, mechanisms of action, and environmental implications
Clement Oluseye Ogunkunle, Adetunji Ajibola Awe, Muyiwa Micheal Orosun, Aniefiok Effiong Ite, Hussein Kehinde Okoro, Emmanuel Timilehin Komolafe, and Paul Ojo Fatoba
Elsevier - Potentially toxic metals in irrigation water, soil, and vegetables and their health risks using Monte Carlo models
Muyiwa Michael Orosun, Samuel Nwabachili, Reem F. Alshehri, Maxwell Omeje, Ibtehaj F. Alshdoukhi, Hussein K. Okoro, Clement O. Ogunkunle, Hitler Louis, Fakoya A. Abdulhamid, Stephen Erhonmonsele Osahon,et al.
Springer Science and Business Media LLC
AbstractFood safety has become a serious global concern because of the accumulation of potentially toxic metals (PTMs) in crops cultivated on contaminated agricultural soils. Amongst these toxic elements, arsenic (As), cadmium (Cd), chromium (Cr), and lead (Pb) receive worldwide attention because of their ability to cause deleterious health effects. Thus, an assessment of these toxic metals in the soils, irrigation waters, and the most widely consumed vegetables in Nigeria; Spinach (Amaranthushybridus), and Cabbage (Brassica oleracea) was evaluated using inductively coupled plasma-optical emission spectroscopy (ICP-OES). The mean concentration (measured in mg kg−1) of the PTMs in the soils was in the sequence Cr (81.77) > Pb(19.91) > As(13.23) > Cd(3.25), exceeding the WHO recommended values in all cases. This contamination was corroborated by the pollution evaluation indices. The concentrations (measured in mg l−1) of the PTMs in the irrigation water followed a similar pattern i.e. Cr(1.87) > Pb(1.65) > As(0.85) > Cd(0.20). All the PTMs being studied, were found in the vegetables with Cr (5.37 and 5.88) having the highest concentration, followed by Pb (3.57 and 4.33), and As (1.09 and 1.67), while Cd (0.48 and 1.04) had the lowest concentration (all measured in mg kg−1) for cabbage and spinach, respectively. The concentration of the toxic metals was higher in spinach than in cabbage, which may be due to the redistribution of the greater proportion of the metals above the ground tissue, caused by the bioavailability of metals in the aqueous phase. Expectedly, the hazard index (HI),and carcinogenic risk values of spinach were higher than that of cabbage. This implies that spinach poses potentially higher health risks. Similarly, the Monte Carlo simulation results reveal that the 5th percentile, 95th percentile, and 50th percentile of the cumulative probability of cancer risks due to the consumption of these vegetables exceeds the acceptable range of 1.00E−6 and 1.00E−4. Thus, the probable risk of a cancerous effect is high, and necessary remedial actions are recommended. - Characterization and Remediation Potential of Sorghum and Rice Straw-Derived Biochars on Incubated Spent-Oil Contaminated Soil
Olamide Omolafe Ogunremi, Clement Oluseye Ogunkunle, and Paul Ojo Fatoba
Elsevier BV - Nanoengineered particles for sustainable crop production: potentials and challenges
Vinita Vishwakarma, Clement Oluseye Ogunkunle, Abdulfatai Babatunde Rufai, Gideon Olarewaju Okunlola, Olusanya Abiodun Olatunji, and Mahboob Adekilekun Jimoh
Springer Science and Business Media LLC - Potentially Toxic Elements in Pharmaceutical Industrial Effluents: A Review on Risk Assessment, Treatment, and Management for Human Health
Hussein K. Okoro, Muyiwa M. Orosun, Faith A. Oriade, Tawakalit M. Momoh-Salami, Clement O. Ogunkunle, Adewale G. Adeniyi, Caliphs Zvinowanda, and Jane C. Ngila
MDPI AG
Potentially toxic elements (PTEs) are metallic chemicals with densities that are higher than that of water. Water pollution by PTEs due to the discharge of untreated pharmaceutical industrial effluents is a risk to human health and ecological integrity. The present review paper provides an overview of the threats to human health due to water contamination by PTEs such as lead, cobalt, cadmium, nickel, and arsenic originating from pharmaceutical industrial wastewater. This review reveals the associated advantages and shortcomings of the outmoded and the modern methods and the challenges involved in addressing the shortcomings. Additionally, due to the increasing amount of uncontrollable pharmaceutical effluents entering the ecosystem, this paper reviewed the management approach supported by the World Health Organization and the Environmental Protection Agency. Studies revealed that PTEs find their way into human bodies through different pathways, which include drinking water, edibles, and dermal vulnerability at intervals. This paper focuses on how pharmaceutical effluents can be handled and how regulations and strategies can be reinforced step by step. To preserve public health and the environment, a comprehensive study on the environmental evaluation of carcinogenic substances, particularly toxic elements and metalloids, should be supported and advocated. To protect living organisms and the welfare of consumers, efforts should be made to reduce the presence of potentially hazardous elements on land and water. - Foliar application of nanoceria attenuated cadmium stress in okra (Abelmoschus esculentus L.)
C.O. Ogunkunle, G.Y. Balogun, O.A. Olatunji, Z. Han, A.S. Adeleye, A.A. Awe, and P.O. Fatoba
Elsevier BV - Nanoparticles-based management of cadmium toxicity in crop plants
C. O. Ogunkunle, M. A. Jimoh, E. F. Adegboye, A. B. Rufai, O. A. Olatunji, G. O. Okunlola, and C. O. Adenipekun
Springer International Publishing - Foliar Application of Melatonin Alleviates the Deleterious Effects of Drought on the Three Most Cultivated Capsicum Species in Africa
Gideon Olarewaju Okunlola, Olusanya Abiodun Olatunji, Ewa Niewiadomska, Mahboob Adekilekun Jimoh, Abdulfatai Babatunde Rufai, and Clement Oluseye Ogunkunle
Springer Science and Business Media LLC - Climate Change-Mediated Fire Effects on Community Structure and the Physio-Anatomical Adaptations of Plants in Tropical Savannas
S. Oyedeji, C.O. Ogunkunle, S.A. Adeniran, O.O. Agboola, and P.O. Fatoba
CRC Press - Foliar application of hydrogen peroxide (H<inf>2</inf>O<inf>2</inf>) modulates growth, inorganic ion and osmolyte accumulation of soybean (Glycine max) cultivars under drought stress
Gideon Olarewaju Okunlola, Olusanya Abiodun Olatunji, Idowu Arinola Obisesan, Ezekiel Dare Olowolaju, Clement Oluseye Ogunkunle, and Abdulfatai Babatunde Rufai
Elsevier BV - Phytoextraction of rare earth elements, germanium and other trace elements as affected by fertilization and liming
Precious Uchenna Okoroafor, Nicolle Kunisch, Melvice Ngalle Epede, Clement Oluseye Ogunkunle, Hermann Heilmeier, and Oliver Wiche
Elsevier BV - Copper-based nanoparticles in soil: Uptake, bioaccumulation, toxicity, and biotransformation in plants
Clement O. Ogunkunle, Mariam A. Akanbi-Gada, Stephen Oyedeji, and Mayank Varun
Elsevier - Modifications in elemental contents of edible portions of plants exposed to engineered nanomaterials
Clement O. Ogunkunle, Ojuolape F. Akande, Adewole T. Adetunji, Charles O. Adetunji, and Paul O. Fatoba
Elsevier - Engineered nanomaterial-mediated changes in the growth and development of common agricultural crops
CO Ogunkunle, MA Jimoh, S Oyedeji, Mayank Varun, and GO Okunlola
Elsevier - Nanomaterial-based biosorbents: Adsorbent for efficient removal of selected organic pollutants from industrial wastewater
Hussein. K. Okoro, Sadanand Pandey, Clement O. Ogunkunle, Catherine J. Ngila, C. Zvinowanda, Ismaila Jimoh, Isiaka A. Lawal, Muyiwa M. Orosun, and Adewale George Adeniyi
Elsevier BV - Phytoaccumulation potential of nine plant species for selected nutrients, rare earth elements (REEs), germanium (Ge), and potentially toxic elements (PTEs) in soil
Precious Uchenna Okoroafor, Clement Oluseye Ogunkunle, Hermann Heilmeier, and Oliver Wiche
Informa UK Limited
Abstract Given the possible benefits of phytoextraction, this study evaluated the potential of nine plant species for phytoaccumulation/co-accumulation of selected nutrients, rare earth elements, germanium, and potentially toxic elements. Plants were grown on 2 kg potted soils for 12 weeks in a greenhouse, followed by a measurement of dry shoot biomass. Subsequently, elemental concentrations were determined using inductively coupled mass spectrometry, followed by the determination of amounts of each element accumulated by the plant species. Results show varying accumulation behavior among plants for the different elements. Fagopyrum esculentum and Cannabis sativa were better accumulators of most elements investigated except for chromium, germanium, and silicon that were better accumulated by Zea mays, the only grass species. F. esculentum accumulated 9, 24, and 10% of Copper, Chromium, and Rare Earth Elements in the mobile/exchangeable element fraction of the soils while Z. mays and C. sativa accumulated amounts of Cr and Ge ∼58 and 17% (for Z. mays) and 20 and 9% (for C. sativa) of the mobile/exchangeable element fraction of the soils. Results revealed co-accumulation potential for some elements e.g., (1) Si, Ge, and Cr, (2) Cu and Pb, (3) P, Ca, Co, and REEs based on chemical similarities/sources of origin. NOVELTY STATEMENT This is a novel study because it focuses on evaluating plant species not only the accumulation behavior but the possibilities of co-accumulation of elements comprising selected nutrients, PTEs and CRMs (Ge and REEs) by plants. It provides new information on the biomass production and accumulation behavior of some plant species for some elements, some of which have not been previously studied. It also provides information on the possibility of predicting species accumulation behavior for some elements based on similarities in the source of origin, chemical similarities, or antagonism. - Organic carbon, nitrogen and phosphorus enrichment potentials from litter fall in selected greenbelt species during a seasonal transition in Nigeria’s savanna
S. Oyedeji, O. O. Agboola, D. A. Animasaun, C. O. Ogunkunle, and P. O. Fatoba
Springer Science and Business Media LLC - Short-Term Aging of Pod-Derived Biochar Reduces Soil Cadmium Mobility and Ameliorates Cadmium Toxicity to Soil Enzymes and Tomato
Clement Oluseye Ogunkunle, Fayoke Oluwaseun Falade, Bosede Jumoke Oyedeji, Funmi Ojuolape Akande, Vinita Vishwakarma, Karthik Alagarsamy, D. Ramachandran, and Paul Ojo Fatoba
Wiley
Contamination of agricultural soil with cadmium (Cd) has become a global concern because of its adverse effects on ecohealth and food safety. Soil amendment with biochar has become one of the phytotechnologies to reduce soil metal phyto‐availability and its potential risks along the food chain. Biochar, derived from cocoa pod, was evaluated in soil Cd fractions (exchangeable, reducible, oxidizable, and residual) by modified Commission of the European Communities Bureau of Reference sequential extraction and its efficacy to ameliorate Cd toxicity to soil enzymes and leaf bioactive compounds. A pot experiment was conducted using Cd‐spiked soil at 10 mg/kg with tomato (Solanum lycopersicum L.) at a biochar application rate of 1 and 3% (w/w) for 6 wk. The addition of biochar significantly reduced (p < 0.05) the exchangeable, reducible, and residual fractions by at least approximately 23%, with a consequential decrease in Cd root uptake and transport within tomato tissues. The activity of soil enzymes (catalase, dehydrogenase, alkaline phosphatase, and urease) was affected by Cd toxicity. However, with the exception of dehydrogenase, biochar application significantly enhanced the activity of these enzymes, especially at the 3% (w/w) rate. As for the secondary metabolites we studied, Cd toxicity was observed for glutathione, terpenoids, and total phenols. However, the biochar application rate of 1% (w/w) significantly ameliorated the effects of toxicity on the secondary metabolites. In conclusion, biochar demonstrated the potential to act as a soil amendment for Cd immobilization and thereby reduce the bioavailability of Cd in soil, mitigating food security risks. Environ Toxicol Chem 2021;40:3306–3316. © 2020 SETAC - Co-application of indigenous arbuscular mycorrhizal fungi and nano-TiO<inf>2</inf> reduced Cd uptake and oxidative stress in pre-flowering cowpea plants
C.O. Ogunkunle, A.M. Ahmed El-Imam, E. Bassey, V. Vishwakarma, and P.O. Fatoba
Elsevier BV - Effect of Low-Dose Nano Titanium Dioxide Intervention on Cd Uptake and Stress Enzymes Activity in Cd-Stressed Cowpea [Vigna unguiculata (L.) Walp] Plants
Clement O. Ogunkunle, Hauwa Gambari, Fatimah Agbaje, Hussein K. Okoro, Nnameaka T. Asogwa, Vinita Vishwakarma, and Paul O. Fatoba
Springer Science and Business Media LLC - Cadmium toxicity in cowpea plant: Effect of foliar intervention of nano-TiO<inf>2</inf> on tissue Cd bioaccumulation, stress enzymes and potential dietary health risk
Clement Oluseye Ogunkunle, Deborah Ayomide Odulaja, Funmilola Ojuolape Akande, Mayank Varun, Vinita Vishwakarma, and Paul Ojo Fatoba
Elsevier BV - Effect of nanosized anatase TiO<inf>2</inf> on germination, stress defense enzymes, and fruit nutritional quality of Abelmoschus esculentus (L.) Moench (okra)
Clement Oluseye Ogunkunle, Esther Faderera Adegboye, Hussein Kehinde Okoro, Vinita Vishwakarma, Karthik Alagarsamy, and Paul Ojo Fatoba
Springer Science and Business Media LLC