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All Journal Sang Pencerah: Jurnal Ilmiah Universitas Muhammadiyah Buton Journal of Environmental and Science Education
Iyama, William Azuka
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Humanities Education Environmental Science Social Sciences Other

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Risk Assessment of the Impact of Oil Spill on the Heavy Metal Content of Santa Barbara River in Bayelsa State, Nigeria Iyama, William Azuka; Egbunefu, Chukwudi Omeni; Nakara, Timothy; Emejuru, Stella; Nwagbara, Victor Uzoma
Journal of Environmental and Science Education Vol 3 No 1 (2023): Journal of Environmental and Science Education : April 2023
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jese.v3i1.61481

Abstract

This study was aimed at assessing both the effect (risk) and impact of a recent oil spill on heavy metal concentration in the Santa Babara River in Bayelsa State, Nigeria. Samples were collected and preserved based on standard methods. The heavy metals of interest were Mercury (Hg), Arsenic (As), Cadmium (Cd), Chromium (Cr) and Copper (Cu) due to their levels of toxicities and presence in water bodies while the five study stations were Worokuma (W), Uwanga (W), Tuweni (T), Shellikiri (S), Inarakiri (I) and Esenfakiri (E). The solar thermos elemental flame atomic absorption spectrometer (AAS), model SE-71096 made in Germany with detection limit of 0.001 mg·kg−1 was used for the heavy metal analysis. The trend of heavy metal abundance was found in this order Cr>Cu>Cd>Pb>Hg=As. All the detectable metals had risk index of greater than 5 but the highest was found in the order, Cd> Pb > Cu > Cr (149, 35, 26 and 12 respectively) which meant extremely high level of pollution. This also indicated the probability of non-carcinogenic effects occurring and increases as HI increases signifying carcinogenic risk via direct ingestion of water. Graphs were used to show trends in both mean heavy metal concentrations and risk assessment indices. Chromium and Pb had moderate contaminations for CF and CDI values, hence regular monitoring of the Santa Barbara River is of essence as most of the inhabitants take this as the only source of potable water as their wells have very high iron content.
Assessment of The Impact Covid-19 on The Environment and Water Resources: A Namibian Perspective Nwagbara, Victor Uzoma; Iikela, Sioni; Iyama, William Azuka
Sang Pencerah: Jurnal Ilmiah Universitas Muhammadiyah Buton Vol. 10 No. 2 (2024): Sang Pencerah: Jurnal Ilmiah Universitas Muhammadiyah Buton
Publisher : Lembaga Jurnal dan Publikasi Universitas Muhammadiyah Buton

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35326/pencerah.v10i2.3078

Abstract

The widespread spread of Covid-19 globally has hampered many socio-economic activities and caused many negative impacts on the environment and water resources. Industrial activity came to a halt and this brought the global economy to a halt while water demand and consumption skyrocketed as the UN urged people to wash their hands to fight the COVID19 pandemic. Namibia is no exception in terms of the negative impact of COVID19 on the environment and water resources as it is considered one of the driest countries in Sub-Saharan Africa. This research method uses a persuasive-based qualitative description approach. To facilitate understanding and reading, the research results are described first. The results in the field are that In Namibia, more than 20% of the population, especially those living in rural areas, do not have access to good quality water and do not have a safe sanitation system. The continuation and extension of the nationwide lockdown deepens the recession and indirectly impacts the environment and water bodies.
Co-Authors Egbunefu, Chukwudi Omeni Emejuru, Stella Iikela, Sioni Nakara, Timothy Nwagbara, Victor Uzoma