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61,005 resultsShowing papers similar to Risk assessment of potentially toxic elements in water, sediment, aquatic mussels, and edible crops from a gold-mining-stressed river in Northern Nigeria
ClearAssessment of Heavy Metal Contamination in Shrimp and Water from the Great Kwa River: Implications for Human Health and Aquatic Ecosystems
Researchers measured heavy metal concentrations in shrimp and water samples from Nigeria's Great Kwa River. The study found elevated levels of several toxic metals linked to oil exploration and industrial activities, with some metals in shrimp tissue exceeding safe consumption limits, raising concerns about health risks for local communities who rely on river shellfish as a food source.
Many oil wells, one evil: comprehensive assessment of toxic metals concentration, seasonal variation and human health risk in drinking water quality in areas surrounding crude oil exploration facilities in rivers state, Nigeria
Researchers assessed toxic metal concentrations in drinking water near crude oil exploration facilities in Nigeria, finding seasonal variations and levels exceeding safety thresholds that pose serious health risks to surrounding communities.
Potentially toxic metals in irrigation water, soil, and vegetables and their health risks using Monte Carlo models
Researchers measured toxic metals including arsenic, cadmium, chromium, and lead in irrigation water, soil, and vegetables in Nigeria, finding levels that exceeded safety guidelines in all cases. The toxic metals accumulated in commonly eaten vegetables like spinach and cabbage, posing cancer and non-cancer health risks to adults and children. While focused on heavy metals, this research is relevant to microplastics because microplastics in agricultural soil can absorb and transport these same toxic metals into crops.
Many Oil Wells, One Evil: Potentially toxic metals concentration, seasonal variation and Human Health Risk Assessment in Drinking Water Quality in Ebocha-Obrikom Oil and Gas Area of Rivers State, Nigeria
Researchers assessed heavy metal concentrations and seasonal variation in drinking water from an oil and gas extraction area in Nigeria, finding contamination levels that pose significant human health risks including potential neurological and carcinogenic effects.
Bioaccumulation of Heavy Metals in Pelagic and Benthic Fishes of Ogbese River, Ondo State, South-Western Nigeria
Researchers measured heavy metal concentrations in water, sediments, and fish organs from the Ogbese River in Nigeria. The study found that while fish tissue metal levels were within permissible limits, sediment concentrations of cadmium, chromium, iron, and manganese exceeded safe thresholds, indicating moderate contamination risk that warrants ongoing monitoring.
Heavy Metals and their Effects on Macroinvertebrates Present in the Ojo River, Lagos, Nigeria
Researchers investigated heavy metal concentrations in the tissues of crab, prawn, and crayfish from the Ojo River in Lagos, Nigeria, assessing contamination levels in commercially harvested crustaceans and their implications for human health and aquatic ecosystem integrity.
Risk assessment of selected metallic pollutants in fish from Zuru Dam, Kebbi State, Nigeria
Researchers measured concentrations of seven metals (Fe, Zn, Cu, Cr, Co, Pb, K) in catfish and tilapia from Zuru Dam in Nigeria and performed health risk assessments, finding metal levels that may pose risks to communities consuming fish from this water body.
Levels of heavy metals in water and Nile tilapia fish (Oreochromis niloticus) of Eleyele Lake in Ibadan, Nigeria
This is not a microplastics study; it measures heavy metals in water and Nile tilapia from a Nigerian lake, finding that lead concentrations in fish tissue exceeded WHO and FAO limits even though water concentrations appeared acceptable, raising food safety concerns for local consumers.
Bioaccumulation and potential sources of heavy metal contamination in fish species in River Ganga basin: Possible human health risks evaluation
Researchers assessed heavy metal contamination in seven commonly consumed fish species from the Ganga River basin in India, measuring zinc, lead, copper, cadmium, and chromium levels. They found that chromium, cadmium, and lead concentrations in river water exceeded safe limits at all sampling sites, with the highest metal accumulation occurring in fish liver tissue. The health risk assessment indicated potential long-term hazards for human populations consuming fish from these contaminated river segments.
Health Risks from Intake and Contact with Toxic Metal-Contaminated Water from Pager River, Uganda
Researchers investigated the concentrations of lead and cadmium in the Pager River in Uganda, a tributary of the Nile, and assessed associated human health risks. The study found that water from certain sampling points posed potential health risks through both ingestion and skin contact, highlighting the importance of monitoring toxic metals in water sources used by local communities.
Hazardous effects of heavy metal pollution on Nile tilapia in the aquatic ecosystem of the Eastern Delta in Egypt
Researchers assessed heavy metal contamination in Nile tilapia from rivers in Egypt's Eastern Delta, finding that some metals had accumulated in fish tissues at levels exceeding international safety limits — raising health concerns for people who eat fish from these polluted waters.
Evaluation of the Effects of Heavy Metals on Water from Illegal Crude Oil Refineries: a Case Study of Three Selected Communities in the Niger Delta Region, Nigeria
This paper is not about microplastics; it measures heavy metal contamination (and associated health risk indices) in surface water near illegal crude oil refineries in three communities of Nigeria's Niger Delta region.
Health Risk Assessment of Heavy Metals in Sediment of Tropical Freshwater Stream
This study measured heavy metal concentrations in bed sediments of a tropical freshwater stream in Nigeria using ICP-OES analysis and calculated lifetime health risk for both ingestion and dermal exposure pathways, finding elevated chromium and nickel levels that exceeded acceptable risk thresholds.
Physicochemical Quality and Health Risks Associated with Use of Water from Nyamwamba River, Kasese, Western Uganda
Researchers assessed seasonal physicochemical quality and heavy metal contamination in Uganda's Nyamwamba River, finding that copper mine tailings elevated levels of arsenic, lead, and cadmium above safe thresholds, posing significant carcinogenic and non-carcinogenic health risks to communities drinking or using the water.
Evaluation of Heavy Metal Pollution in Commonly Consumed Mollusc (Crassostrea gasar) from Elechi Creek, River State, Nigeria and the Health Risk Implications
Researchers evaluated heavy metal concentrations in mangrove oysters (Crassostrea gasar) from Elechi Creek over six months, measuring copper, cadmium, zinc, lead, arsenic, and mercury across three stations. The study assessed potential adverse human health risks associated with consuming these commonly eaten molluscs.
Comparative Assessment Of Heavy Metal Accumulation In Two Commercial Fish Species (Clarias Gariepinus And Chrysichthys Nigrodigitatus) From Amansea River, Nigeria
Researchers measured heavy metal concentrations (Pb, Hg, As, Cd, Cr) in water, sediment, and tissues of two commercially important fish species from Amansea River, Nigeria. C. nigrodigitatus accumulated significantly more cadmium and chromium than C. gariepinus, with Bioaccumulation Factors indicating species-specific differences in heavy metal uptake relevant to food safety.
Occurrence and Health Implications of Heavy Metals in Microplastics from Otuoke Surface Waters
Microplastics collected from surface waters in Otuoke, Nigeria were analyzed for adsorbed heavy metals, with health risk assessments indicating that consumption of contaminated aquatic organisms could pose risks to local populations from metal-laden plastic particles.
Investigation of microplastics and potentially toxic elements (PTEs) in sediments of two rivers in Southwestern Nigeria
Researchers investigated microplastic and toxic element contamination in sediments of two rivers in southwestern Nigeria. They found microplastic abundances ranging from 67 to 433 particles per kilogram, with polyethylene being the most common polymer type, along with elevated levels of chromium and lead. The study highlights how indiscriminate waste dumping is contaminating Nigerian river ecosystems and calls for stricter enforcement of environmental regulations.
Enrichment, Bioaccumulation and Health Risks of Trace Metals in Soils and Leafy Vegetables Grown on the Banks of the Ugandan Lifeline River, River Rwizi
Researchers measured six trace metals in soil and leafy vegetables grown along the banks of Uganda's River Rwizi near urban areas. The study found elevated metal concentrations linked to urbanization and industrial activities, with some vegetables accumulating metals at levels that could pose health risks to people who regularly eat produce from these riverside farms.
Heavy Metal Contamination and Ecological Risk Assessment in Soils of the Pawara Gold Mining Area, Eastern Cameroon
Researchers assessed heavy metal contamination in soils from artisanal gold mining sites in eastern Cameroon. The study found extremely high concentrations of mercury and lead exceeding background levels, with mercury reaching 1,590 mg/kg at one site, posing significant ecological and health risks from unregulated mining practices.
Toxic Heavy Metals in Soil and Plants from a Gold Mining Area, South Africa
Researchers measured concentrations of arsenic, cadmium, lead, and zinc in soils and plants within 500 m and 1,000 m of a gold mine in North-West South Africa using ICP-MS, finding that while levels remained below national and international thresholds, they exceeded background concentrations measured several kilometers from the mining area.
Carcinogenic and non-carcinogenic health risk assessment of river Ganges in different climatic conditions and regions of Uttarakhand, India
Researchers assessed health risks from heavy metals in the Ganges River, finding elevated arsenic at some sites and correlations between physicochemical parameters and metal concentrations.
Assessment of Temporal Variation of Water QualityParameters and Ecotoxic Trace Metals in SouthernNigeria Coastal Water
This paper is not about microplastics; it monitors temporal variation in water quality parameters and trace metal (cadmium, chromium, nickel, lead) concentrations in the Opuroama River and local aquatic organisms in southern Nigeria.
Metals contamination of Aquifer in Warri and Port- Harcourt (Niger – Delta Region)
This study measured heavy metal concentrations in hand-dug well water from 12 locations in Warri and Port Harcourt, Nigeria's Niger Delta region, finding contamination levels raising public health concerns. Standard physicochemical and atomic absorption spectrometry analyses identified several metals exceeding safe drinking water thresholds.