Assessment of Stream Sediments Pollution by Potentially Toxic Elements in the Active Mining Area of Okpella, Edo State, Nigeria

Obaje, S. O.; Ogunyele, Abimbola Chris; Adeola, Adedapo O.; Akingboye, Adedibu Sunny

doi:10.17794/rgn.2019.2.5

Cited by 8 publications

(4 citation statements)

References 11 publications

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“…Collected samples were analyzed by the ICP-OES method [36][37][38][39]. Studies and results of stream sediment samples identified some points with a higher grade than the cut-off limit [40]. The specimens identified as anomalies of copper, silver, manganese, lead, and zinc are shown in Figure 6.…”

Section: Geochemistrymentioning

confidence: 99%

Geology, Geochemistry and Geophysical Studies in Exploration of Copper and Iron Reserves: A Case Study

Motlagh

Rasti

Safaei

2022

Technium EcoGeoMarine

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The large Miocene stock work-vein porphyry copper mineralization of Sarcheshmeh are already known, but there are still few studies regarding mineral prospection in smaller deposits. This paper proposes exploration techniques for Cu prospecting in Hefdah Chenar area, Kerman Province, Iran, as case study. This study investigate the Hefdah Chenar area's mineralization in light of its natural context, focusing on geology, geochemistry, and geophysics. Hefdah Chenar district consists of an Eocene volcanic andesite succession with a gently northeast dipping, which was intruded by at least two phases of copper-bearing granodiorite porphyries. Several documents and data including topographic, geological, land use, soils maps, Hefdah Chenar area's map, field visit, the geochemical study's results, and stream sediment samples proved the presence of some points with a grade higher than the threshold limit. The results of the geophysical IP&RS method indicated that the sulfur mineralization trend was northeast and consistent with the effects of surface mineralization. The result of this investigation indicates that based on the results of geophysical models, there is an increase in the amount of induced polarization at the location of possible faults. Furthermore, among these, magnetic data presents that there is no significant changes except in areas with magnetic veins.

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Section: Geochemistrymentioning

confidence: 99%

Geology, Geochemistry and Geophysical Studies in Exploration of Copper and Iron Reserves: A Case Study

Motlagh

Rasti

Safaei

2022

Technium EcoGeoMarine

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“…Because metals are irreversible and have harmful impacts on living creatures, determining the heavy metal concentration of soils around cement plants should be part of the environmental monitoring and evaluation process. Despite the fact that Obaje et al (2019) investigated the degree of heavy metal pollution in stream sediments in Okpella's active mining region, the results indicated that stream sediments in this location are heavily polluted by potentially harmful metals (PTM). However, no research had been done to identify the number of heavy metals in the area's soils.…”

Section: Introductionmentioning

confidence: 97%

Heavy Metals in Soils around a Major Cement Factory in Southern Nigeria: Ecological and Human Health Risks

Adewumi

Ogundele

Adeseko

2022

Nig. J. Env. Sci. & Tech.

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This study was carried out to evaluate the ecological and health risks associated with metals in soils around major cement company in southern Nigeria. Twenty-one soil samples including a control sample were collected around the cement company. Metals such as Cd, As, Co, Cr, Cd, Pb, Ni, Fe, and Zn were analysed using Atomic Absorption Spectrometer (AAS). Results showed that the average concentration of Cu, Co, Cd, Cr, Ni, Pb, Zn is 7.95 mg/kg, 0.50 mg/kg, 3.00 mg/kg, 1.00 mg/kg, 0.95 mg/kg, 2.00 mg/kg and 6.80 mg/kg while the average concentration of Cu, Co, Cd, Cr, Ni, Pb, Zn around the cement production area is 6.30 mg/kg, 1.50 mg/kg, 1.75 mg/kg, 2.09 mg/kg, 2.62 mg/kg, 6.40 mg/kg and 3.58 mg/kg respectively. The concentration of metals in this area was lower than the recommended standards but higher than those in the background soil. Contamination assessment of metals in soils of Okpella area revealed that they pose a very high degree of pollution and deterioration of the environment. Furthermore, ecological risk assessment revealed that the metals pose medium ecological risks. Health risks assessment uncovered that children residing in this area are prone to non-carcinogenic health risks through dermal contact with Cobalt in contaminated soils of the area. The statistical evaluation showed that metals in the soils might have originated from related sources. It is recommended that proper environmental monitoring of the area be carried out reduce its impact on the health of the populace.

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“…Although the human contribution of Hg to the environment is mainly caused by the use of Hg in gold extraction and the burning of fossil fuels, contamination of the hydrographic basin can also result from atmospheric deposition, inadequate waste disposal, as well as leaching of agricultural soil [10][11][12][13]. Thus, although studies are generally focused on regions with activities with more significant impacts, it is essential to investigate regions without clear point sources of Hg contamination, looking for areas potentially contaminated by diffuse sources of Hg or with specific characteristics for mobilization and bioaccumulation of this element [14,15].…”

Section: Introductionmentioning

confidence: 99%

Hg Pollution Indices along the Reis Magos River Basin—Brazil: A Precursory Study

Sartori

Dalfior

Provete

et al. 2022

IJERPH

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Mercury is a metal present in the Earth’s crust, but due to human contribution, its concentration can increase, causing environmental impacts to aquatic ecosystems, among others. The Reis Magos River Hydrographic Basin represents economic and socio-environmental importance for the state of Espírito Santo, Brazil. However, there are not many publications regarding the quality of water and sediments, so no data is reported concerning the total concentration of Hg. Thus, the present work aimed to evaluate the distribution of total Hg in water and sediments along this hydrographic basin. For a better inference, physicochemical parameters of the water were determined (temperature, pH, electrical conductivity, oxidation-reduction potential (ORP), turbidity, dissolved oxygen (DO), total dissolved solids (TDS), and salinity), and in the sediments, the contents of matter organic matter, pH, carbonates and granulometry. Mercury determination was performed by Thermodecomposition and Amalgamation Atomic Absorption Spectrometry (TDA AAS) with a DMA-80 spectrometer. The Hg determined in the water was lower than the limit of quantification, 0.14 µg∙L−1, which is lower than the maximum limits recommended by world reference environmental agencies. In the sediment samples, the Hg found were below 170 µg∙kg−1, values below which there is less possibility of an adverse effect on the biota. However, when the degree of anthropic contribution was evaluated using the Geoaccumulation index (IGeo), the contamination factor (CF), and the ecological risk potential index (EF), there was evidence of moderate pollution. Thus, this highlighted the need for monitoring the region since climatic variations and physical-chemical parameters influence the redistribution of Hg between the water/sediment interface.

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Assessment of Stream Sediments Pollution by Potentially Toxic Elements in the Active Mining Area of Okpella, Edo State, Nigeria

Cited by 8 publications

References 11 publications

Geology, Geochemistry and Geophysical Studies in Exploration of Copper and Iron Reserves: A Case Study

Geology, Geochemistry and Geophysical Studies in Exploration of Copper and Iron Reserves: A Case Study

Heavy Metals in Soils around a Major Cement Factory in Southern Nigeria: Ecological and Human Health Risks

Hg Pollution Indices along the Reis Magos River Basin—Brazil: A Precursory Study

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