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Tag: Dr. Stephen Awogbami

  • Researcher shows assessment of elevated concentrations of heavy metals in groundwater in Nigeria’s mining regions

    Researcher shows assessment of elevated concentrations of heavy metals in groundwater in Nigeria’s mining regions

    A recent research conducted by Dr. Stephen Awogbami an environmental toxicologist and Public Health specialist has revealed high levels of toxic heavy metals — lead, cadmium, mercury, manganese, arsenic, and chromium— in groundwater in Nigeria’s mineral-extracting regions. 

    In his research, he said: “Groundwater sometimes serves as drinking source for some rural populations in Nigeria.

    “Using advanced environmental analytics, particularly Principal Component Analysis (PCA) – a statistical tool used to identify patterns and pollution sources in complex environmental datasets, it was demonstrated that indicators of anthropogenic contamination are directly linked to mining activities and industrial discharge.

    “During the dry season, two principal components explained over 81% of the total variance in heavy metal concentration. The first component showed strong correlations among lead, chromium, manganese, and mercury, suggesting a shared source likely linked to mining effluents and unregulated ore processing. 

    “The second component highlighted cadmium as a stand-alone contaminant, implying contamination from discarded batteries, industrial waste, or pesticides.

    “The situation becomes even more fragmented in the rainy season, with three components revealing diverse sources of metal contamination. One PCA showed opposing trends between lead and chromium, while others linked cadmium and manganese, and another grouped arsenic with mercury. 

    “These results confirm that rainfall contributes to leaching of toxins into aquifers, complicating remediation efforts.

    Professor Adewoye Solomon from Ladoke Akintola University in Ogbomosho, Nigeria, an expert in Environmental Toxicology and Wastewater Management advocated for a multi-layered response model that integrates the following:

    Hydro-Geochemical Surveillance Network: Establish continuous groundwater monitoring systems at mining sites to track seasonal variations and pollutant surges.

    Pollution Fingerprinting: Apply PCA and geospatial mapping to identify pollutant sources and design targeted interventions.

    Bioremediation Techniques: Introduce phytoremediation and microbial bioreactors to detoxify contaminated water sources using eco-friendly methods.

    Policy Enforcement and Community Protection: Urgently implement stricter regulations on mining operations and enforce the Polluter Pays Principle.

    Public Health Alerts: Educate local communities about the risks of heavy metal poisoning and provide access to alternative clean water sources.

    Related research has established that high lead levels can cause irreversible neurological damage in children, and arsenic exposure is linked to skin cancer and cardiovascular disease.

    According to Dr. Awogbami, the study underscores that mining operations significantly pollute groundwater in adjacent communities, resulting in adverse effects on both human health and aquatic ecosystems. 

    He further advocated for immediate and coordinated interventions by governmental agencies, environmental regulators, policymakers, public health authorities, and relevant stakeholders to prevent further pollution of subterranean water resources and to mitigate potentially fatal outcomes for human populations.

  • Protecting Black Communities from Mining Hazards: Scientist links new study on gold extraction to major health risks in Osun

    Protecting Black Communities from Mining Hazards: Scientist links new study on gold extraction to major health risks in Osun

    Dr. Stephen Awogbami, an environmental and public health scholar from College of Health Sciences and Technology Ijero-Ekiti who is currently making waves in the field of Environmental Health Science has uncovered alarming evidence that gold mining operations are significantly endangering public health in southwestern Nigeria.

    This ground-breaking study — is now attracting attention from public health advocates, environmental policy makers, and developmental organizations across the continent.

    In an interview, Dr. Awogbami stated that this research was initiated to examine the intersection between unregulated artisanal gold mining and its ripple effects on human health, particularly within vulnerable communities.

    The findings, based on extensive field data from participants across mining-impacted local government areas in Osun State, provide strong empirical evidence that environmental degradation—ranging from polluted water sources to dust inhalation and noise pollution—is significantly correlated with adverse health conditions including joint pain (77.3%), malaria (73.0%), and general weakness (69.0%).

    The study’s statistical analyses show that polluted water bodies, airborne particles, and noise-induced ground vibrations are major predictors of these health problems. For instance, the presence of suspended particles in local rivers was identified as the single strongest environmental factor (R = 0.354, p < 0.001) associated with deteriorating community health. Vulnerability was also higher among long-term residents and older individuals, suggesting a cumulative impact from prolonged exposure.

    Beyond its scientific depth, Dr. Awogbami advocates for urgent public health interventions — ranging from enforcement of mining safety regulations to the provision of safe water and sanitation. It also aligns closely with the United Nations Sustainable Development Goals (SDGs), particularly those concerning health, clean water, and sustainable land use.

    This work is not just about data — it is a call to action. It places the health of marginalized Black communities at the centre of the environmental justice conversation and brings scientific clarity to a long-overlooked crisis.

    As Nigeria and other African nations pursue economic development through natural resource extraction, Dr. Morufu Raimi an environmental expert from Federal University Otuoke Nigeria emphasised that the insights from this study serve as a crucial guide for balancing growth with human well-being.

    He stated further that this research will catalyse stronger environmental policies and inspire further academic and policy-focused investigations into mining-related public health threats across sub-Saharan Africa.