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61,005 resultsShowing papers similar to Levels of heavy metals in water and Nile tilapia fish (Oreochromis niloticus) of Eleyele Lake in Ibadan, Nigeria
ClearOccurrence 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.
Occurrence and Health Implications of Heavy Metals in Microplastics from Otuoke Surface Waters
This study investigated the occurrence of heavy metals associated with microplastics in surface waters in Otuoke, Nigeria, finding that MPs adsorb and concentrate toxic metals and may serve as vectors for metal exposure in local communities consuming fish. (Duplicate record of ID 11006.)
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.
Detection and occurrence of microplastics in the stomach of commercial fish species from a municipal water supply lake in southwestern Nigeria
Researchers screened and detected microplastics in the stomachs of commonly consumed fish from a Nigerian municipal water supply lake, providing baseline data for a region where such records are scarce and raising concerns about human dietary exposure.
Seasonal variations of water physico-chemistry, heavy metal concentrations and ecological abundance and biodiversity of fish from two Lagoon streams
Researchers monitored water chemistry, heavy metal concentrations, and fish biodiversity across seasons in two Nigerian lagoon streams. Heavy metals often adsorb to microplastics in aquatic environments, and documenting baseline contamination levels is important for understanding cumulative pollution impacts on freshwater fish communities.
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.
Assessment 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.
A Review of Chemical Contaminants in Marine and Fresh Water Fish in Nigeria
This review compiled data on chemical contaminants including PAHs, persistent organic pollutants, heavy metals, and microplastics in freshwater and marine fish from Nigeria, finding that most contaminant levels fall below international food safety thresholds but identifying lead, iron, and smoked fish PAHs as potential health concerns in specific locations.
Concentrations, characteristics, and human health exposure assessment of microplastics and heavy metals in freshwater fish in a potable water supply reservoir
Researchers examined microplastic and heavy metal contamination in catfish and tilapia from a drinking water supply reservoir in Ghana. They found microplastics in all fish studied, with fibers being the most common type and polyethylene the dominant polymer, along with measurable levels of zinc, copper, and lead. The exposure assessment suggests that regular consumption of these fish could represent a notable pathway for human intake of both microplastics and heavy metals.
Ecological and health risk assessment of heavy metals bioaccumulation in Ganges fish near Varanasi, India
Not relevant to microplastics — this study measured heavy metal (lead, manganese, chromium, cadmium) contamination in the Ganges River at Varanasi and in fish caught there for human consumption, finding metal levels well above safe drinking water standards and significant bioaccumulation in fish tissue.
Microplastics profile in fishes from selected burrow pits: a case of plastic pollution in Kano metropolis, Nigeria
Researchers detected microplastics in the gastrointestinal tracts, gills, and muscle tissues of Nile tilapia and redbelly tilapia collected from burrow pits in Kano, Nigeria, confirming that plastic pollution has penetrated freshwater fish in a landlocked urban African setting.
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.
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.
Micro Plastic Challenges in River Delimi Due to Its Interaction with Physicochemical Parameters
This Nigerian study examined how microplastics — primarily PET and PVC — interact with heavy metals in River Delimi, where irrigated farmland means contaminated water reaches food crops. Researchers found elevated concentrations of metals like lead and mercury in both water and plants from six sites along the river, suggesting that microplastics act as carriers that concentrate toxic metals. The findings raise direct food safety concerns because residents consume fruits and vegetables grown in these contaminated soils.
Occurrence of Microplastics in the Tissues of Nile Tilapia (Orechromis niloticus) from Zobe Dam, Katsina State, Nigeria
This study found microplastics in the tissues of Nile tilapia cultured in freshwater, with particles identified in gills, intestines, and muscle tissue. The results highlight the potential for microplastic transfer from farmed fish to human consumers.
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.
Correlation of Water Quality with Microplastic Exposure Prevalence in Tilapia (Oreochromis niloticus)
Researchers exposed tilapia to polyethylene microplastics at three concentrations and assessed effects on water quality and microplastic accumulation in gastrointestinal, liver, gill, and gonad tissues, finding that higher concentrations were associated with elevated microplastic prevalence and tissue-specific accumulation patterns.
Analysis of microplastic contamination and associated human health risks in Clarias gariepinus and Oreochromis niloticus from Kubanni Reservoir, Zaria Nigeria
Researchers assessed microplastic contamination in two commercial fish species from Kubanni Reservoir in Nigeria and found fibers to be the most abundant particle type, with concentrations varying by season. The fish showed signs of oxidative stress and cellular damage in gills, liver, and muscle tissue that correlated with microplastic ingestion levels. The study raises concerns about potential human health risks from consuming contaminated fish, particularly for children who may exceed safe exposure thresholds.
Behavioral, biochemical, immune, and histological responses of Nile tilapia (Oreochromis niloticus Linnaeus, 1758) to lead, mercury, and pendimethalin exposure: individual and combined effects
This study tested the effects of lead, mercury, and a pesticide on Nile tilapia fish and found that exposure to all three together caused the worst damage, including organ injury, weakened immune systems, and high mortality. While not directly about microplastics, the research is relevant because microplastics can carry heavy metals like lead and mercury in water, potentially amplifying their toxic effects on fish. Since tilapia is a common food fish, these combined pollutant effects could impact seafood safety.
Assessment of Microplastics Found in Two Fish Species of Clarias gariepinus and Oreochromis niloticus From River Niger, Lokoja, Kogi State, Nigeria
Researchers assessed microplastic contamination in two commercially important fish species, Clarias gariepinus and Oreochromis niloticus, collected from the River Niger at Lokoja in Kogi State, Nigeria. The study found microplastics present in both species, highlighting the riverine pollution burden and potential for human dietary exposure through fish consumption.
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.
Microplastics and heavy metals in freshwater fish: A comprehensive study of contamination and health risks
Researchers simultaneously assessed microplastic and heavy metal contamination in two fish species from Iran's Kashkan River, finding microplastics in 79% of the 48 specimens examined. The study also found heavy metal levels that exceeded safe limits, raising human health concerns for communities consuming these fish.
Microplastics and metal burdens in freshwater Tilapia (Oreochromis niloticus) of a metropolitan reservoir in Central Mexico: Potential threats for human health
Tilapia from a metropolitan Mexican reservoir contained an average of 139 plastic fibers in their gastrointestinal tracts, predominantly black, blue, and red polyamide and polyester fibers, alongside elevated metal concentrations — raising concerns about combined dietary exposure via this widely consumed fish.
Risk assessment of potentially toxic elements in water, sediment, aquatic mussels, and edible crops from a gold-mining-stressed river in Northern Nigeria
Researchers assessed potentially toxic element contamination from artisanal gold mining in a Nigerian river, finding cadmium, chromium, lead, copper, and nickel concentrations exceeding WHO guidelines by roughly tenfold in water, with bioaccumulation in mussels and crops posing significant non-carcinogenic and carcinogenic health risks to local populations.