We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Risk assessment of selected metallic pollutants in fish from Zuru Dam, Kebbi State, Nigeria
Summary
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.
This study investigates the concentration of metallic pollutants in fish samples from Zuru Dam and assesses the potential health risks associated with consuming these fish. Six fish samples, comprising three catfish and three tilapia, were collected from local fishermen. The concentration of metals, including iron (Fe), zinc (Zn), copper (Cu), chromium (Cr), cobalt (Co), lead (Pb), and potassium (K), was analyzed using the Atomic Absorption Spectrometric (AAS) technique. The results showed varying concentrations of Fe, Zn, and Cu, with Fe levels ranging from 7.85 ± 0.21 (CF2) to 128.5 ± 9.19 (TG3), Zn ranging from 8.75 ± 0.25 (CF2) to 42.321 ± 0.11 (CG1), and Cu found to be below detection limits (BDL) in several samples. The concentration of Cr, Co, Pb, and K also varied, with some samples showing detectable levels of these metals. Comparison with World Health Organization (WHO) tolerance limits revealed that Fe and Zn concentrations exceeded the acceptable limits, while Cu and K were well below their respective limits. Chromium and cobalt concentrations were within the WHO limits, except for a few samples, while Pb was only detected in TG1. The analysis showed significant differences (P < 0.05) in the concentrations of Cu, Cr, and Pb, indicating distinct pollution sources for these metals. Health risk assessment based on the Hazard Index (HI) indicated that adult consumers of certain fish samples, such as TG3, CG3, CG1, CG2, CF2, TG1, and TF1, may be at high risk of health problems due to the contamination, with HI values greater than 5. For children, HI values exceeding 1 in some samples suggested moderate health risks, particularly in TF2, TG1, CG1, and CG3. This study highlights the presence of significant heavy metal contamination in fish from Zuru Dam, posing health risks to consumers, particularly children and adults who consume high-risk samples. The findings underscore the need for regular monitoring of metal concentrations in the region and the implementation of pollution control measures. Public awareness programs should be initiated to inform local populations about the potential health risks associated with consuming contaminated fish, especially for vulnerable groups such as children. Further research is recommended to identify the specific sources of contamination and the long-term impacts on the aquatic ecosystem and human health.
Sign in to start a discussion.
More Papers Like This
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.
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.