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61,005 resultsShowing papers similar to Comparative Assessment Of Heavy Metal Accumulation In Two Commercial Fish Species (Clarias Gariepinus And Chrysichthys Nigrodigitatus) From Amansea River, 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.
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.
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.
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 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.
Bioaccumulation of metals and genotoxic effects in females of Colomesus asellus collected in an Amazon River estuary, Amapá, Brazil
Researchers examined metal bioaccumulation and genotoxic effects in female Colomesus asellus (Amazonian Puffer) from an Amazon River estuary near urban centers in Amapá, Brazil, finding tissue metal concentrations decreasing in the order Fe > Zn > Cu > Mn > Hg > Pb > Ni > Cd > Cr, with metal accumulation correlating with nuclear alterations in erythrocytes.
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.
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.
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.
Residual Levels of Mercury, Cadmium, Lead and Arsenic in Some Commercially Key Species from Italian Coasts (Adriatic Sea): Focus on Human Health
Researchers assessed mercury, cadmium, lead, and arsenic levels in two commercially important fish species from the Adriatic Sea, finding that while individual metal concentrations were generally below safety thresholds, cumulative exposure from high fish consumption may pose health risks.
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.
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.
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.
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.
Bioaccumulation and Bioremediation of Heavy Metals in Fishes—A Review
This review summarizes how heavy metals accumulate in fish tissues through contaminated water and enter the human food chain, posing serious public health concerns. The paper discusses bioremediation techniques using microorganisms and other methods to remove heavy metals from aquatic environments, which is relevant because microplastics can carry and concentrate these same toxic 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.
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.
Bioconcentration of Heavy Metals in Milkfish Reared in Stick-Net Pens System: Implications for Open Water Environmental Contamination and Food Safety
Researchers measured concentrations of heavy metals including chromium, cadmium, copper, and lead in both the coastal waters and milkfish meat at stick-net pen cultivation sites in Tanjung Mas, Semarang City, Indonesia. The study assessed bioconcentration of these metals in farmed milkfish and the implications for food safety and open water environmental contamination.
Heavy Metal Concentrations in Certain Edible Freshwater Fishes and Sediments from Kapila River in Mysore District, Karnataka
Researchers measured heavy metal concentrations in three freshwater fish species from the Kapila River in Karnataka, India. Levels of arsenic, lead, nickel, and other metals were found in fish tissues and sediments. Since heavy metals can accumulate in fish consumed by local populations, these findings raise food safety concerns for communities relying on this river.
Heavy metal baselines in cyprinidae of the Han River: a decade-long study on bioaccumulation trends and species-specific sensitivities
Researchers conducted a decade-long study assessing baseline heavy metal concentrations (copper, total mercury, cadmium, lead, and chromium) in the muscle tissue of three Cyprinidae species — common carp, crucian carp, and barbel steed — from the Han River, identifying species-specific bioaccumulation patterns and sensitivities. Common carp showed the highest overall heavy metal accumulation, providing reference baselines for monitoring aquatic pollution in an urbanized river system.
Radioactivity distributions and biohazard assessment of coastal marine environments of niger-delta, Nigeria
Researchers assessed radioactivity and pollution levels in the coastal marine environment of Nigeria's Niger Delta. They found that radionuclide concentrations in sediments and water exceeded recommended safety limits, with certain fish species accumulating higher levels of radioactive elements. The study recommends continuous monitoring of these polluted coastal waters to protect both ecological and human health.
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.
A Comprehensive Review on Cadmium Toxicity in Freshwater Fish: Physiological, Ecological and Health Implications
This comprehensive review examines cadmium toxicity in freshwater fish, covering physiological damage to gills, kidneys, liver, and gonads, ecological impacts on fish populations, and implications for human health through consumption of cadmium-contaminated aquatic food.
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.)