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61,005 resultsShowing papers similar to Risk assessment of selected metallic pollutants in fish from Zuru Dam, Kebbi State, Nigeria
ClearBioaccumulation 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.
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.
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.
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.
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.
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.
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.
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.
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.)
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.
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.
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.
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.
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.
Health risk assessment of heavy metals in marine fish caught from the northwest Persian Gulf
Not a microplastics paper — this study measures heavy metal concentrations (nickel, zinc, copper, lead, cadmium) in marine fish from the Persian Gulf and assesses the associated human health risk from fish consumption.
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.
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.
Trace minerals, antioxidant defense, and safe consumption of Nile tilapia: insights from ecological variability in lake Mariout, Egypt
Researchers assessed trace mineral accumulation, antioxidant enzyme activity, and health risks in Nile tilapia collected from two restored basins of Lake Mariout, Egypt, finding no non-carcinogenic risk at normal consumption levels and upregulated metal-regulatory and antioxidant genes in fish from the more contaminated basin.
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.
Levels of Zinc (Zn), Copper (Cu), Iron (Fe), and Cadmium (Cd) in Soil, Rice Stalk, and Oryza Sativa Grain in Ishiagu Rice Field, Ebonyi State, Nigeria; Human Health Risk
Researchers measured zinc, copper, iron, and cadmium concentrations in soil and rice grain from a Nigerian agricultural field, finding all levels within international safety limits and calculating that daily metal intake from rice consumption poses no significant health risk to adults.
Assessment of Heavy Metals and Phytochemicals in Soil and Rice Samples Cultivated in a Selected Agricultural Region of Nigeria.
This study assessed concentrations of heavy metals (Pb, Cd, Zn, Fe, Cu, Cr, Ni) and phytochemicals in soil and rice samples from agricultural regions in Abuja and Kogi State, Nigeria, evaluating bioaccumulation risks and food safety implications for populations consuming locally grown rice.
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.
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.
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.