Physicochemical Properties, Total Concentration, Geochemical Fractions, and Health Risks of Trace Metals in Oil-Bearing Soils of Akwa Ibom State, Nigeria

Ebong, Godwin Asukwo; Moses, E. A.; Akpabio, Otobong; Udombeh, Rosemary

doi:10.55455/jmesr.2022.009

Cited by 5 publications

(7 citation statements)

References 66 publications

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“…The mean concentrations (mgkg -1 ) of Cd, Cr, Ni, and Pb were 3.492±0.511, 1.612±0.231, 7.407±2.099, and 2.277±0.389, respectively. These mean concentrations reported were within their acceptable limits by FAO/WHO, [50]. Results in Table 3 indicate that, standard deviations for most of the toxic metals in water samples and fish were high.…”

Section: Concentrations Of Toxic Metals In Water Liza Grandisquamis A...supporting

confidence: 53%

Toxicity profile of metals in water, sediments and Liza grandisquamis from Iko River, South-South of Nigeria

Aniefiokmkpong Okokon Okon,

Godwin Asukwo Ebong,

Victoria Paul Tombere

et al. 2023

Int. J. Frontline Res. Pharm. Bio Sci.

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Water pollution and the risks associated with the prolonged exposure to contaminated water source by human is becoming a serious problem globally. The concentrations, cancer and non-cancer risks of Cd, Cr, Ni, and Pb via exposure to water, fish, and sediments from Iko River were examined. Results obtained showed that, the mean concentrations of these metals in fish and sediments were within their recommended limits however; the levels in water were higher than their limits. Principal component analysis (PCA) indentified anthropogenic factor as the major source of all the toxic metals in the environmental media assessed. The estimated daily intake (EDI) rate of the metals revealed that, Cd in water and sediments for both the adult and children populations were higher than their recommended daily oral reference doses (Rfds). The EDI for Cr in all the samples and ages were within the Rfd. While the EDI of Ni in water and fish for both populations were within the Rfd limit, but it was higher in sediments for both populations. The EDI of Pb for all the samples and ages were higher than the Rfd. The hazard indices of these metals were higher than one in water and sediments but less than one in fish for both populations. However, the children class was more susceptible to the non-carcinogenic risks. The results obtained also showed that, Cd and Pb were the major contributors to the reported non-carcinogenic risks. The total cancer risks (TCR) of the metals in all the samples and ages were higher than the recommended limit and the risks were higher in the children than the adult’s class.

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Section: Concentrations Of Toxic Metals In Water Liza Grandisquamis A...supporting

confidence: 53%

Toxicity profile of metals in water, sediments and Liza grandisquamis from Iko River, South-South of Nigeria

Aniefiokmkpong Okokon Okon,

Godwin Asukwo Ebong,

Victoria Paul Tombere

et al. 2023

Int. J. Frontline Res. Pharm. Bio Sci.

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“…This revealed that these parameters had some values higher than the mean obtained. It may be due to the high spatio-temporal variations among the studied locations along the river 106,107 . The study revealed higher levels of physicochemical properties and total trace metals in the upstream and midstream regions than in the downstream as reported by Čiuldienė et al 108 and Xie et al 109 .…”

Section: Resultsmentioning

confidence: 99%

Physicochemistry of Iko River Channel in Nigeria and the Related Human Health Problems

Tombere,

Okokon Okon,

Ebong

et al. 2023

Asian J. Biol. Sci

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Background and Objective: Potable water is essential for all lives on earth however, the quality of water available in the oil producing area of Nigeria has been seriously degraded. This work was conducted at Nda Uko, Kampe, Utapete Flow Station, Iko, Emereoke and Jaja Creek along Iko River to establish its pollution status, cancer and non-cancer health risks associated with human exposure to the river. Materials and Methods: During this study, water samples were obtained at Nda Uko, Kampe, Utapete flow Station, Iko, Emereoke and Jaja Creek along Iko River in Eastern Obolo, Nigeria. Collection of samples was done for twelve months and a total of thirty-six composite samples were obtained and used for this study. Some parameters were determined in situ while other parameters were analysed in the laboratory using appropriate equipment. Samples for dissolved oxygen (DO), Biochemical Oxygen Demand (BOD) and chemical oxygen demand (COD) were obtained using brown BOD bottles while samples for metals analysis were treated with 1 mL of concentration HNO 3 before analysis. Data and multivariate analyses were performed with IBM SPSS Statistics 20. Results: The TDS, DO, EC, turbidity, TH, ClG, SO 4 2 G, NO 2 G, PO 4 3 G, Fe, Ni, Pb, Cd and Mn were higher. This was attributed mainly to the anthropogenic factor. Daily intake rates of Cd and Pb obtained were higher than the recommended reference daily doses. The Cd and Pb showed high potential for the non-cancer risks in both the children and adult populations. The total hazard indexes for both populations were higher than one. Cancer risks of Ni, Cd and Cr were very high however, the children were more susceptible. Conclusion: The total cancer risks (TCR) for both populations were higher than the acceptable limit with Ni being the main contributor.

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“…Potential ecological risk index (PERI) was used to assess the effect of trace metals on sediment from each of the studied rivers and was estimated using Equation 3 as reported by Cao et al [46] and Ebong et al [47]. The various classes of potential ecological risk index according to Hu et al [48] and Kang et al [49] are in Table 2.…”

Section: Potential Ecological Risk Index (Peri)mentioning

confidence: 99%

“…The rate of human exposure to trace metals through the ingestion of sediments from the studied river channels was examined by the estimated daily intake (EDI) rate, [91]. The ingestion of trace metals via sediments could be accidentally or intentionally via the consumption of aquatic foods and water from the studied rivers.…”

Section: Non-carcinogenic Human Health Risks Evaluationmentioning

confidence: 99%

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2023

World J. Adv. Pharm. Med. Res.

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The concentrations of Mn, Fe, Cu, Zn, Pb, and Cd in sediments from Great Kwa, Calabar, Cross River, Imo, and Qua Iboe Rivers were investigated during the dry and wet seasons using standard techniques. Results indicated that the mean concentrations of all the metals were within their acceptable limits although; higher concentrations were obtained during the wet season. Cd was the major contaminant in the studied sediments; the ecological risks of all the metals except Cd were in the low class. The potential ecological risks of the metals were in the low and moderate categories during the dry and wet seasons, respectively. Sediments from Qua Iboe River exhibited very high human health risks for both seasons. Factor analysis revealed anthropogenic and natural factors as the major sources of these metals in sediments from the rivers investigated for both seasons. The estimated daily intake (EDI) rates of these metals via exposure to the studied sediments were within their recommended oral reference doses however; higher wet season values were recorded. The hazard index (HI) values of the trace metals were less than one (1) but, higher during the wet season. Pb and Cd were the major contributors to the total HI during the dry and wet seasons. The relative risk analysis for both seasons also confirmed Cd as the major human risk in the studied sediments. This research has exposed the levels of trace metals and their associated human risks in sediments from the rivers investigated.

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Physicochemical Properties, Total Concentration, Geochemical Fractions, and Health Risks of Trace Metals in Oil-Bearing Soils of Akwa Ibom State, Nigeria

Cited by 5 publications

References 66 publications

Toxicity profile of metals in water, sediments and Liza grandisquamis from Iko River, South-South of Nigeria

Toxicity profile of metals in water, sediments and Liza grandisquamis from Iko River, South-South of Nigeria

Physicochemistry of Iko River Channel in Nigeria and the Related Human Health Problems

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