Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria
Background: This study evaluated the concentrations, speciation, and environmental risks of aluminium (Al), cadmium (Cd), manganese (Mn), lead (Pb), zinc (Zn), and copper (Cu) in the major refuse dumpsite soils of Ile-Ife, Osun State, Nigeria. Methods: Soil samples were collected from refuse dumpsit...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Journal of Trace Elements and Minerals |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2773050625000011 |
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| author | Oluwakemi O. Tovide John A.O. Oyekunle Odunayo T. Ore Bukola A. Oyebode Elizabeth O. Moseri Abolanle S. Adekunle Oluwasegun Oluwarotimi Aderemi O. Ogunfowokan Adebayo O. Eludoyin |
| author_facet | Oluwakemi O. Tovide John A.O. Oyekunle Odunayo T. Ore Bukola A. Oyebode Elizabeth O. Moseri Abolanle S. Adekunle Oluwasegun Oluwarotimi Aderemi O. Ogunfowokan Adebayo O. Eludoyin |
| author_sort | Oluwakemi O. Tovide |
| collection | DOAJ |
| description | Background: This study evaluated the concentrations, speciation, and environmental risks of aluminium (Al), cadmium (Cd), manganese (Mn), lead (Pb), zinc (Zn), and copper (Cu) in the major refuse dumpsite soils of Ile-Ife, Osun State, Nigeria. Methods: Soil samples were collected from refuse dumpsite soils in Ile-Ife, Osun State, Nigeria. The soil samples were digested using HCl and HNO3 and analysed for total metal concentrations. The soil samples were equally subjected to six-step chemical fractionation protocol for speciation analysis. The metal levels were determined using Atomic Absorption Spectrophotometer. Results: The findings showed a mean distribution pattern of Mn > Zn > Cu > Pb > Cd > Al. The speciation analysis indicated that the water-soluble, exchangeable, and carbonate fractions contained more than 80 % of the metals, implying high solubility and bioavailability. The organic and residual fractions had minimal metal forms. Environmental risk assessment indices all pointed to low contamination and ecological risk, with the majority of values being less than 1. The study found that the dumpsite soils presented little environmental concern, even though metal amounts varied throughout sampling points. Conclusion: These findings emphasised that when evaluating the possible ecological effects of potentially toxic element contamination in an environment, metal speciation should be taken into account in addition to total metal concentrations so as to have a better overview of the contamination status of the environment. |
| format | Article |
| id | doaj-art-56e7f3267e6c440a87492bd7e466540e |
| institution | Kabale University |
| issn | 2773-0506 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Trace Elements and Minerals |
| spelling | doaj-art-56e7f3267e6c440a87492bd7e466540e2025-01-29T05:02:49ZengElsevierJournal of Trace Elements and Minerals2773-05062025-03-0111100210Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, NigeriaOluwakemi O. Tovide0John A.O. Oyekunle1Odunayo T. Ore2Bukola A. Oyebode3Elizabeth O. Moseri4Abolanle S. Adekunle5Oluwasegun Oluwarotimi6Aderemi O. Ogunfowokan7Adebayo O. Eludoyin8Centre for Environmental Studies and Sustainable Development, Lagos State University, Ojo, Lagos, NigeriaDepartment of Chemistry, Obafemi Awolowo University, Ile-Ife, Nigeria; Corresponding authors.Department of Chemistry, Kogi State University, P.M.B. 222, Kabba, Nigeria; Corresponding authors.Department of Industrial Chemistry, First Technical University, Ibadan, NigeriaDepartment of Basic and Environmental Science, Ignatius Ajuru University of Education, Port Harcourt, NigeriaDepartment of Chemistry, Obafemi Awolowo University, Ile-Ife, NigeriaDepartment of Chemistry, Obafemi Awolowo University, Ile-Ife, NigeriaDepartment of Chemistry, Obafemi Awolowo University, Ile-Ife, NigeriaDepartment of Geography, Obafemi Awolowo University, Ile-Ife, NigeriaBackground: This study evaluated the concentrations, speciation, and environmental risks of aluminium (Al), cadmium (Cd), manganese (Mn), lead (Pb), zinc (Zn), and copper (Cu) in the major refuse dumpsite soils of Ile-Ife, Osun State, Nigeria. Methods: Soil samples were collected from refuse dumpsite soils in Ile-Ife, Osun State, Nigeria. The soil samples were digested using HCl and HNO3 and analysed for total metal concentrations. The soil samples were equally subjected to six-step chemical fractionation protocol for speciation analysis. The metal levels were determined using Atomic Absorption Spectrophotometer. Results: The findings showed a mean distribution pattern of Mn > Zn > Cu > Pb > Cd > Al. The speciation analysis indicated that the water-soluble, exchangeable, and carbonate fractions contained more than 80 % of the metals, implying high solubility and bioavailability. The organic and residual fractions had minimal metal forms. Environmental risk assessment indices all pointed to low contamination and ecological risk, with the majority of values being less than 1. The study found that the dumpsite soils presented little environmental concern, even though metal amounts varied throughout sampling points. Conclusion: These findings emphasised that when evaluating the possible ecological effects of potentially toxic element contamination in an environment, metal speciation should be taken into account in addition to total metal concentrations so as to have a better overview of the contamination status of the environment.http://www.sciencedirect.com/science/article/pii/S2773050625000011DumpsitesEnvironmentPotentially toxic elementsRisk assessmentSpeciation |
| spellingShingle | Oluwakemi O. Tovide John A.O. Oyekunle Odunayo T. Ore Bukola A. Oyebode Elizabeth O. Moseri Abolanle S. Adekunle Oluwasegun Oluwarotimi Aderemi O. Ogunfowokan Adebayo O. Eludoyin Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria Journal of Trace Elements and Minerals Dumpsites Environment Potentially toxic elements Risk assessment Speciation |
| title | Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria |
| title_full | Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria |
| title_fullStr | Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria |
| title_full_unstemmed | Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria |
| title_short | Speciation studies of potentially toxic elements within the vicinity of major dumpsites in Ile-Ife, Osun State, Nigeria |
| title_sort | speciation studies of potentially toxic elements within the vicinity of major dumpsites in ile ife osun state nigeria |
| topic | Dumpsites Environment Potentially toxic elements Risk assessment Speciation |
| url | http://www.sciencedirect.com/science/article/pii/S2773050625000011 |
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