Bioaccumulation of Heavy Metals and Hydrocarbons in Hemichromis Fasciatus Exposed to Surface Water in Borrow Pits Located Within Onshore Oil Exploration and Production Area

Vaikosen, Edebi N.; Ebeshi, B. U.; Airhihen, B. B.

doi:10.5539/ep.v3n3p38

Cited by 5 publications

(4 citation statements)

References 28 publications

(16 reference statements)

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“…This may be due to run-off, tidal incursions and flooding. This corroborates with the research undertaken by Vaikosen et al [18], who reported a higher value in wet season than the dry season. The finding in this study is consistent with the result of other studies [19,20].…”

Section: Sedimentsupporting

confidence: 93%

Evaluation of the Levels of Heavy Metals, Total Petroleum Hydrocarbon and Total Hydrocarbon Content in Tympanotomus fuscatus and Sediment, Qua Iboe River, Akwa Ibom State, Nigeria

Ikpe

Ekwere

Ukpong

et al. 2019

CSIJ

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This study assesses the levels of heavy metals and hydrocarbons in Tympanotomus fuscatus and the sediments of Qua Iboe River, Akwa Ibom State; the interest in the study area was due to the several industrial and oil exploration activities in the area. The heavy metals (HM) of interest were Pb, Cd, Cu, Se, Zn, As, Cr, Fe, Ni and Hg, determined using Atomic Absorption Spectroscopy while Total Hydrocarbon Content (THC) and Total Petroleum Hydrocarbon (TPH) were determined by the GC-FID method. Results obtained indicated that the heavy metal concentration in Tympanotomus fuscatus ranged as follows: Pb (1.037 – 2.002 mg/kg), Cd (0.00 – 0.088 mg/kg), Cu (0.0037 – 10.01 mg/kg), Se (2.364 – 5.063 mg/kg), Zn (0.025 – 1.393 mg/kg), As (0.0113 – 0.355 mg/kg), Cr (1.075 – 3.055 mg/kg), Fe (2.384 – 10.022), Ni (0.045 – 1.223 mg/kg), Hg (0.037 – 1.003 mg/kg) while heavy metal concentration in sediments were: Pb (1.399 – 2.345 mg/kg), Cd (0.0267– 0.222 mg/kg), Cu (0.017 – 10.0197 mg/kg), Se (1.388 – 3.369 mg/kg), Zn (5.688 – 8.038 mg/kg), As (0.003 – 0.0317 mg/kg), Cr (0.0157 – 2.057 mg/kg), Fe (27.351 – 86.686), Ni (0.017 – 5.0413 mg/kg), Hg (0.06 – 1.53 mg/kg); generally, heavy metals levels were higher in dry season than in wet season. The levels of TPH ranged from 160.86 – 1081.52 mg/kg in Tympanotomus fuscatus and 175.97 – 3143.91 mg/kg in sediments; meanwhile, the concentration of TPH ranged from 728.47 – 2442.04 mg/kg in Tympanotomus fuscatus and 492.41 – 7186.25 mg/kg in sediments. Multiple correlation coefficient matrixes were carried out to ascertain the relationship between the pollutants concentration in the biota and sediments. Furthermore, predictive modeling of pollutant concentration in flesh and shell of Tympanotomus fuscatus was estimated. The results indicate that the amounts of HM, TPH and THC in some of the study sites were above the maximum permissible limit set by WHO and FMEnv; thus, pose health risk to humans.

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Section: Sedimentsupporting

confidence: 93%

Evaluation of the Levels of Heavy Metals, Total Petroleum Hydrocarbon and Total Hydrocarbon Content in Tympanotomus fuscatus and Sediment, Qua Iboe River, Akwa Ibom State, Nigeria

Ikpe

Ekwere

Ukpong

et al. 2019

CSIJ

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“…Oil spillage and petroleum products are anthropogenic sources of PAHs in the environment 11. Organic pollutants such as PAHs have a tendency to accumulate in biota and undergo food chain magnification 12. The Atlas Cove jetty, which serves as a major storage depot for imported petrol before distribution, increases the possibility of contamination during the offloading process from vessels into the Atlas Cove product storage tank.…”

Section: Introductionmentioning

confidence: 99%

Concentration of Polycyclic Aromatic Hydrocarbons and Estimated Human Health Risk of Water Samples Around Atlas Cove, Lagos, Nigeria

Olayinka

Adewusi

Olarenwaju

et al. 2018

Journal of Health and Pollution

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Background.Polycyclic aromatic hydrocarbons (PAHs) are common pollutants in water and have been reported to cause severe health effects in humans as well as the ecosystem.Objectives.This study examined the concentrations of polycyclic aromatic hydrocarbons and estimated the human health risk from water samples around Atlas Cove jetty, Lagos, Nigeria.Methods.Physical and chemical parameters and PAHs were determined in Atlas Cove jetty water using standard methods from June to August 2016 at five different points of activity. Chronic daily intake through ingestion, exposure dose via dermal absorption and carcinogenic risks were calculated for children and adults.Results.Electrical conductivity values ranged from 23,600±57.74 - 30,000±57.74 μS/cm. Dissolved oxygen ranged from 6.27±0.46 - 9.60±0.00 mg/L. Biochemical oxygen demand levels ranged from 2.93±0.61 - 7.33±0.23 mg/L and total dissolved solid ranged from 17,500±57.74 - 20,000±57.74 mg/L for the water samples, which was higher than permissible limits. The values obtained for pH, chemical oxygen demand, nitrate, sulphate and phosphate for the water samples were within World Health Organization (WHO) limits except for pH at point 2 (3.18±0.02). A total of eleven PAH congeners were detected in the water samples. The concentrations of total PAHs observed in water samples ranged from 46 - 507 μg/L. Low molecular weight PAHs were more dominant in all samples. It was observed that 2–3 ring PAHs accounted for 63.64% of PAHs, 4-rings PAHs accounted for 27.27% of PAHs, and 5–6 ring PAHs accounted for 9.09% of PAHs.Conclusions.Carcinogenic risks calculated for both adults and children were higher than the United States Environmental Protection Agency (USEPA) acceptable cancer risk, and much higher for children, which suggests that children could be prone to cancer through ingestion. Fauna and flora around the Atlas Cove jetty may be at risk due to water pollution.Competing Interests.The authors declare no competing financial interests.

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“…The modified method by Adewuyi et al [19]; [20] was used for sample digestion.The samples were grinded using an acid (3m nitric acid) prewashed mortar and pestle, sieved into a well labeled transparent plastic containers by passing them through 1mm mesh, 1g of each of the sieved samples were accurately weighed into different digestion flask, well clamp to a retort stand. 10ml of ratio 10:1 mixture or Nitric (HNO3) and perchloric (HCIO4) acid were added to the sample in each of the clamped digestion flask, swirled and allowed for some minutes for any reaction to subside.…”

Section: Determination Of Heavy Metalsmentioning

confidence: 99%

Bioaccumulation of Heavy Metals and Hydrocarbons in Sediment, Shell and Flesh of the Faunas in Qua-Iboe River at Ibeno, Akwa Ibom State, Nigeria

Ikpe,

Etesin,

Ubuo

et al. 2023

AJOCS

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Bioaccumulation of Heavy Metals and Hydrocarbons in Sediment, Shell and Flesh of the Faunas in Qua-Iboe River at Ibeno, Akwa Ibom State, Nigeria was undertaken. The faunas and sediment sample were collected from designated locations and a control location along Ikot-Ibok in dry and wet seasons using standard analytical sampling methods. The samples were analyzed for heavy metals and hydrocarbons content by atomic absorption spectrophotometer and gas chromatography respectively. pH of the samples was assessed. Transfer factor (TF) of the heavy metals between the sediment and the faunas were calculated. Regression models (linear and power equation) were developed to predict the numerical relationship between total petroleum hydrocarbon and total hydrocarbon content (TPH and THC) and heavy metals concentration in shell (predictor) of fauna in relation to their concentration in the flesh (dependent). Results obtained were subjected to statistical analysis such as coefficient of variation and mean. The concentration range of the heavy metals of both faunas and sediment was 0.001 – 86. 686 mg/kg. These value are above the World Health Organization and National Environmental Standard and Regulations Enforcement Agency (WHO/NESREA) standards (0.001 -5.0mg/kg). The coefficient of variation (C.V) had a range of 0.0152 – 193.333% which showed variation in stability of the heavy metals. Transfer factor (TF) showed that Tympanotomus fuscatus tissue bioaccumulated most heavy metals. Hydrocarbons (TPH and THC) and heavy metals concentration in the flesh of Ostreidea and Tympanomus fuscatus tissue were predicted from its shells at highly significant level (P - ≤ 0.05). This study has provided information on the levels of heavy metals and Hydrocarbons in faunas and sediment. In addition, the study has also developed models for predicting the levels of heavy metals and hydrocarbon content in the flesh from the shell of the faunas studied.

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Bioaccumulation of Heavy Metals and Hydrocarbons in Hemichromis Fasciatus Exposed to Surface Water in Borrow Pits Located Within Onshore Oil Exploration and Production Area

Cited by 5 publications

References 28 publications

Evaluation of the Levels of Heavy Metals, Total Petroleum Hydrocarbon and Total Hydrocarbon Content in Tympanotomus fuscatus and Sediment, Qua Iboe River, Akwa Ibom State, Nigeria

Evaluation of the Levels of Heavy Metals, Total Petroleum Hydrocarbon and Total Hydrocarbon Content in Tympanotomus fuscatus and Sediment, Qua Iboe River, Akwa Ibom State, Nigeria

Concentration of Polycyclic Aromatic Hydrocarbons and Estimated Human Health Risk of Water Samples Around Atlas Cove, Lagos, Nigeria

Bioaccumulation of Heavy Metals and Hydrocarbons in Sediment, Shell and Flesh of the Faunas in Qua-Iboe River at Ibeno, Akwa Ibom State, Nigeria

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