The distribution of some heavy metals in soils in areas around the derelict enyigba mines and its environmental implication

Ezeh, H. N.; Anike, O.L.; Egboka, B. C. E.

doi:10.12944/cwe.2.2.01

Cited by 7 publications

(2 citation statements)

References 9 publications

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“…1), thereby degrading the quality of water for domestic, irrigation and other uses (Obasi 2017). Several works including Obiorah et al (2016Obiorah et al ( , 2018, Obasi and Akudinobi 2019a, 2019b, 2020, Obasi and Akudinobi (2015), Nnabo et al (2011), Igwe et al (2012Igwe et al ( , 2014Igwe et al ( , 2015Igwe et al ( , 2017, Oti and Nwabue (2013) and Ezeh et al (2007) have been done with regard to water quality, food crops and soil contamination in the Enyigba area. But none of these has established the quality of these water resources with respect to irrigation agriculture which is leading the economic trend of a diversified economy in Nigeria.…”

Section: The Study Areamentioning

confidence: 99%

Characterization and evaluation of the effects of mine discharges on surface water resources for irrigation: a case study of the Enyigba Mining District, Southeast Nigeria

2021

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Mining activities generate much wastes which degenerate into various geochemical components and affect the natural composition of surface water resources. They cause Acid Mine Drainage (AMDs) and influence the hydrochemical evolution of the hydrogeological systems. This study employed hydrochemical parameters to characterize and evaluate the effects of mine discharges on irrigation surface water in the mining district of Enyigba, SE Nigeria. Twenty-four water samples were collected from surface water sources used for subsistence irrigation farming and analyzed for pH, total dissolved solids (TDS), electrical conductivity (EC), sodium (Na+), potassium (K), calcium (Ca2+), magnesium (Mg2+), bicarbonate (HCO3−), chloride (Cl−) and sulfate (SO42−), while various irrigation parameters including Soluble Sodium Percentage (SSP), Magnesium Adsorption Ratio (MAR), Sodium Percentage (Na %), Sodium Adsorption Ratio (SAR), Permeability Index (PI), Total Hardness (TH), Kelly Ratio (KR) and Electrical Conductivity (EC) were deduced. Result indicates hydrogeochemical trend of Cl− > Mg2+ > Ca2+ > SO42− > HCO3− + CO3 > Na+ + K+, while hydrogeochemical facies from Piper Trilinear plot, Durov and Schoeller plots shows that the dominant ionic species are the Mg2+, Cl−, and SO42−. Irrigation parameters such as SSP, MAR, Na %, SAR, PI, KR and EC indicate that majority of water sample are very good to moderately suitable for irrigation. Five samples around Amorie and Ameka are within the hard category for TH, which could be attributed to the high concentration of dissolved magnesium and calcium ion in the area. Apart from mine discharges, rock water interaction also affects the composition of surface water resources of the area.

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Section: The Study Areamentioning

confidence: 99%

Characterization and evaluation of the effects of mine discharges on surface water resources for irrigation: a case study of the Enyigba Mining District, Southeast Nigeria

2021

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“…Olayinka et al (2011) observed that planting of vegetable samples caused a change in the soil-heavy metal in soilsand that plant uptake and accumulation is dependenton plant type. Ezeh et al (2007) also observed that tubers have higher tendency of Cu and Zn absorption transfer hence the circulation of these metals in the biosphere in the Enyigba. Chojnacka et al (2004) opined in his work that only bioavailable elements were transferred to plants using citrate solution extractant; and that the statistical value of the element content extracted with ammonium citrate in soil was equal to that absorbed by the selected plants used for investigation.…”

Section: Previous Workmentioning

confidence: 79%

Assessment and Bioaccumulation of Cu and Pb in the Biota (Tuber Plant) in a Mining District of Ameka-Enyigba, Abakaliki Mining District, Southeastern Nigeria: A Comparative Study

Onyeabor¹,

Ezeh²,

Anike³

2019

IJRES

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This research tries to compare two investigative approaches towards the accumulation of heavy metals of Cu and Pb in Ameka-Enyigbabiota. Both farmland soils and tuber plant (cassava roots) were obtained with the soil sample being oven dried at 104 0 c,homogenized with mortar, pestle and sieved to obtain a greater surface area. The soils were thereafter sequentially digested to obtain extracts of exchangeable, reducible, organic and residual fractions of bioavailability studies. The cassava plants were obtained and hormogenized and digested with aqua regia. All the extracts were analyzed with the AA sens Atomic Absorption Spectrophotometer. The results revealed that the bioavailable Cu in the study exceeded the exchangeable to the reducible but was still within the acceptable limit both in the bioavailable Cu in soil and Plant uptake; whereas Pb which was within the exchangeable exceeded the maximum acceptable limit in both the bioavailable Pb and the plant uptake.This level of Pb if not checkmated and controlled, could result to lead poisoning in Enyigba-Ameka within a short time span.

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Risks associated with the mining of Pb–Zn minerals in some parts of the Southern Benue trough, Nigeria

Igwe

Adepehin

Iwuanyanwu

et al. 2014

Environ Monit Assess

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The environmental effects of the mining of lead-zinc mineralization in Enyigba area, Southern Benue trough were examined. The samples used for this study were obtained from abandoned mine sites, mine tailings, streams, hand-dug wells, mine pond and borehole. Collected samples were subjected to X-ray fluorescence, X-ray diffraction analyses, atomic absorption spectrometry and permeability tests. These were done using standard laboratory equipment and procedures. The concentrations of heavy metals present in analysed water samples fall below the world health organizations' (WHO) acceptable limits. Conversely, the soil, mine tailings and stream sediments indicate appreciable pollution level by some potential toxic metals (PTMs). Consequently, the habitual use of these soils for construction purpose by inhabitants has possible health hazards. The shaly lithology underlying the area is increasingly affected by weathering and lateritization, thus improving its permeability and the easiness with which PTMs can be conducted to the water table by leachate. Regular monitoring assessment is recommended to ensure adherence of miners operating in the area to existing environmental laws.

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The distribution of some heavy metals in soils in areas around the derelict enyigba mines and its environmental implication

Cited by 7 publications

References 9 publications

Characterization and evaluation of the effects of mine discharges on surface water resources for irrigation: a case study of the Enyigba Mining District, Southeast Nigeria

Characterization and evaluation of the effects of mine discharges on surface water resources for irrigation: a case study of the Enyigba Mining District, Southeast Nigeria

Assessment and Bioaccumulation of Cu and Pb in the Biota (Tuber Plant) in a Mining District of Ameka-Enyigba, Abakaliki Mining District, Southeastern Nigeria: A Comparative Study

Risks associated with the mining of Pb–Zn minerals in some parts of the Southern Benue trough, Nigeria

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