Seasonal variation of soil chemical characteristics at Akwuke Long Wall Underground Mined Site, Nigeria

Ogbonna, P. C.; Nzegbule, E. C.; Okorie, P. E.

doi:10.4314/jasem.v22i8.26

Cited by 3 publications

(2 citation statements)

References 16 publications

(15 reference statements)

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“…The overall pH of soil from the oil-bearing communities ranged from 7.05 to 7.36 as indicated in Table 3. The pH range obtained is similar to the results obtained by Ibrahim et al (2011) however; higher than the range reported by Ogbonna et al (2018). The pH range obtained encourages nutrients availability and plant yield in the area (Sanchez et al, 2003).…”

Section: Resultssupporting

confidence: 88%

Impact of Seasonal Variations and Oil Activities on the Total Concentrations, Geochemical Fractions, And Human Health Problems of Trace Metals in Soils Within the Oil-Bearing Communities of South-South Region of Nigeria

Ebong¹,

Moses²,

Akpabio³

et al. 2022

BJES

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The impacts of oil activities and seasonal variations on the total concentrations, geochemical fractions, and human health problems of trace metals in soils within oil-bearing communities of Akwa Ibom State, Nigeria were examined. Top soils were obtained from Eket, Onna, Esit Eket, and Ibeno local government areas between January and December, 2017. Samples were also collected from Etinan local government area of the State and used as the Control. The samples and Control were subjected to standard analytical procedures and analysed for their physicochemical properties and total metal concentrations. The modified BCR methods were employed for the speciation of metals. The findings revealed that the pH levels were higher during the dry season while, the electrical conductivity, organic matter, and cation exchange capacity of the studied soils were higher in the rainy season. The total mean concentrations of Pb, As, Cd, Cr, Fe, and V were higher in the dry season whereas, Ni was higher in the wet season. Though, their concentrations were within the acceptable limits. Generally, the concentrations of all the parameters in the studied soils were higher than at the control site. Pb, As, Ni, and V existed predominantly in the reducible fraction, Cd and Cr in acid extractable while, Fe existed mostly in the residual fraction in the studied soils. However, at the control site all the metals except Cd existed mainly in the residual fraction. The study showed that all the studied locations were highly contaminated with these metals and substantial seasonal variations were also recorded for the pollution indices. It was also noted that, seasonal changes and oil activities were the key factors affecting the quality of the studied soils. Daily intake rates for the metals through exposure to soil for both the young and old populations were within their required oral reference doses. The non-carcinogenic risks recorded for both populations were less than one. However, both populations were exposed to high Pb and the younger ones were more susceptible. The study revealed the influence of seasonal change and oil activities on the mobility and toxicity of metals in the studied soils.

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Section: Resultssupporting

confidence: 88%

Impact of Seasonal Variations and Oil Activities on the Total Concentrations, Geochemical Fractions, And Human Health Problems of Trace Metals in Soils Within the Oil-Bearing Communities of South-South Region of Nigeria

Ebong¹,

Moses²,

Akpabio³

et al. 2022

BJES

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“…The values of the TOM were generally found to be lower in the contaminated samples of the mechanic village soils than the control sample except in New Heaven mechanic Village. The high organic matter content in soil at the control site is associated with the release of more organic matter materials (litterfall) by plants growing on the control plot and possible droppings as well as remains of animals that inhabited the area (Ogbonna et al., 2018). The sulfur content of the contaminated mechanic village soil samples was generally lower than the values in the control soil.…”

Section: Resultsmentioning

confidence: 99%

Effect of spent engine oil contamination on the soil properties in selected automobile mechanic villages in Enugu, Enugu State, Nigeria

Echiegu

Amadi

Ugwuishiwu

et al. 2021

Environmental Quality Mgmt

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This study was carried out to determine the effect of spent engine oil on the soil properties in selected automobile mechanic villages in Enugu, Enugu State, Nigeria. Spent engine oil (SEO) was collected and characterized according to ASTM test methods. Soil samples were collected at 0–30 and 30–60 cm depths from the mechanic villages and uncontaminated agricultural farmlands 500 m away as control and properties analyzed. The extent of contamination of heavy metals in soils was assessed. The results of the SEO characterization showed the values of 2.87 wt%, 218°C, 13.18 mg/kg, 0.75 mg/kg, 4.06 mg/kg, and 0.94 mg/kg for toluene insoluble, flash point, Pb, As, Cr and Cd. The soil bulk density, pH, TOC, TOM, N, P, Cu, Cd, Pb, and Fe decreased with increasing depth while particle density, TSP, S, Cr, and As increased with increasing depth. The ANOVA results showed that a statistically significant difference existed between values of soil parameters (p < 0.05), indicating that SEO has a significant effect on soil properties (α = 0.05). The study will provide useful insights for developing a precautionary strategy and inform environmental policy implementation for an effective risk management approach in the study area.

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Seasonal variation in heavy metal accumulation in plants at coal mine sites and possible health risk

Ogbonna¹,

Nzegbule²,

Okorie³

2018

Nig. J. Env. Sci. & Tech.

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Human health challenges in recent times have been attributed to consumption of food contaminated with heavy metals. Coal mining is an anthropogenic activity that releases heavy metals into the environment. This study, therefore, assessed accumulation of heavy metals (lead (Pb), cadmium (Cd), nickel (Ni), arsenic (As) and iron (Fe)) in plant species in the vicinity of Akwuke and Iva coal mine in Coal city, Enugu State. The results indicate that the highest concentration of Ni (9.02 ± 0.03 mg/kg), As (0.005 ± 0.001 mg/kg) and Cd (2.16 ± 0.07 mg/kg) was accumulated in Alchornea cordifolia while the concentration of Pb (10.37 ± 0.52 mg/kg) was highest in Andropogon gayanus and Fe (231.00 ± 1.41 mg/kg) was highest in Irvingia gabonensis. The values of Ni (9.02 ± 0.03 mg/kg), As (0.005 ± 0.00 mg/kg), Pb (10.37 ± 0.32 mg/kg), Cd (2.02 ± 0.03 mg/kg), and Fe (46.00 ± 1.41 mg/kg) accumulated in A. cordifolia, A. gayanus, D. guinense, and M. indica in wet season were significantly (P < 0.05) higher than their corresponding values (5.04 ± 0.07, 8.96 ± 0.01 and 0.003 ± 0.001 mg/kg, 1.87 ± 0.07 mg/kg, and 33.45 ± 0.21 mg/kg) in dry season, respectively. Alchornea cordifolia, Andropogon gayanus and Irvingia gabonensis consumed by animals and local inhabitants in the vicinity of the two mined sites could expose them to high levels of Pb, Ni and Cd, thus posing a serious health risk to the local people.

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Seasonal variation of soil chemical characteristics at Akwuke Long Wall Underground Mined Site, Nigeria

Cited by 3 publications

References 16 publications

Impact of Seasonal Variations and Oil Activities on the Total Concentrations, Geochemical Fractions, And Human Health Problems of Trace Metals in Soils Within the Oil-Bearing Communities of South-South Region of Nigeria

Impact of Seasonal Variations and Oil Activities on the Total Concentrations, Geochemical Fractions, And Human Health Problems of Trace Metals in Soils Within the Oil-Bearing Communities of South-South Region of Nigeria

Effect of spent engine oil contamination on the soil properties in selected automobile mechanic villages in Enugu, Enugu State, Nigeria

Seasonal variation in heavy metal accumulation in plants at coal mine sites and possible health risk

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