Evaluation of Water Quality and Heavy Metal Concentration across Two Connecting Tropical Lagoons in Lagos, Nigeria

Okunade, Gabriel Femi; Lawal, Misitura; Uwadiae, Roland Efe

doi:10.4314/br.v19i1.3

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…The commonly detected heavy metals in water include arsenic, cadmium, chromium, copper, lead, nickel, and zinc (Yahaya et al, 2019;Moruf and Durojaiye, 2020). Although lagoon heavy metal pollution is less obvious and more direct than other types of pollution, it has far-reaching consequences for the aquatic ecosystem and humans (Okunade et al, 2021). Heavy metals can induce several diseases, such as respiratory and genetic diseases, haematological problems, dermal damage, eye sight problems, and neurological diseases (Yahaya et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Concentrations and health risk parameters of heavy metals in water samples from Epe Lagoon in Lagos State, Nigeria

Yahaya¹,

Illo²,

Abdulgafar³

et al. 2022

dujopas

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Lagoons are large bodies of water that provide essential economic and ecosystem services such as fishing, erosion protection, transportation, as well as water for domestic, industrial, and agricultural use, among others. Unfortunately, municipal, agricultural, and industrial waste are often dumped in lagoons, polluting the water and predisposing humans and aquatic organisms to environmental and health hazards. This calls for regular monitoring of lagoons worldwide. This study assessed the water quality of Epe lagoon in Lagos State, Nigeria, with regard to heavy metal contamination. Water samples obtained at three settlements (Epe, Ejinrin, and Agbowa) along the lagoon were treated and subjected to heavy metal analysis using standard protocols. The heavy metals analysed were lead (Pb), copper (Cu), nickel (Ni), cadmium (Cd), and chromium (Cr). The chronic daily intake (CDI), chronic dermal contact (CDC), hazard quotients (HQ), heavy metal index (HMI), and probability of cancer risk (PCR) of the heavy metals were also calculated. The results revealed that the water samples from the three locations contained non-permissible levels of Pb, Cu, Ni, Cd, and Cr. The CDI, CDC, and HQ of the heavy metals via ingestion and dermal contact were within the recommended limits, except for Pb. Meanwhile, the HMI and PCR of all the heavy metals exceeded the permissible limits. The results obtained suggest that Epe lagoon’s water is contaminated with heavy metals and thus poses health hazards. Consequently, there is a need for heavy metal remediation and control in the lagoon.

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Section: Introductionmentioning

confidence: 99%

Concentrations and health risk parameters of heavy metals in water samples from Epe Lagoon in Lagos State, Nigeria

Yahaya¹,

Illo²,

Abdulgafar³

et al. 2022

dujopas

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Determination of physicochemical parameters and assessment of trace metals bioaccumulation in the Lagos lagoon and edible tissues of the southern pink shrimp (Farfantepenaeus notialis - Pérez-Farfante, 1967)

Akinjogunla,

Ejikeme,

Udoinyang

et al. 2023

AST

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Abstract. Bio-inorganic chemistry is found as an endearing aspect to research in today’s epoch. It deals with chemical reactions between the metals with natural resources, such as air, soil, water and byproducts (foods). To assess the decline in the quality of southern pink shrimps and water quality on samples from the Lagos lagoon, the morphometric assessment of the crustacean (Farfantepenaeus notialis – F. notialis), physicochemical parameters (pH, temperature, salinity, conductivity, total hardness, total dissolved solids, total suspended solids, biological oxygen demand, chemical oxygen demand, dissolved oxygen, sulphates, nitrate and phosphate) and levels of six (6) trace metals (Cadmium, Chromium, Zinc, Iron, Manganese and Copper) were collected from three sampling points with renowned anthropogenic activities along the stretch of the Lagos Lagoon using standard analytical procedures and the results were compared with standard acceptable limits. The crustaceans used had total length (4.0 – 14.4 cm), carapace length (1.6 – 6.4 cm), total weight (1.1 – 20.8 g) and carapace weight (0.9 – 11.5 g). The results obtained in the physicochemical analysis revealed that a few parameters such as biochemical oxygen demand and total suspended solids were beyond acceptable limits, while the trace metals were present in the samples at different levels but still within the maximum residual levels in the edible tissues of the pink shrimps. The obtained results showed that the crustacean and water from the lagoon contained metals but did not exceed both local and international standards of limit and thus, they are still safe for consumption and domestic uses.

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Evaluation of Water Quality and Heavy Metal Concentration across Two Connecting Tropical Lagoons in Lagos, Nigeria

Cited by 2 publications

References 4 publications

Concentrations and health risk parameters of heavy metals in water samples from Epe Lagoon in Lagos State, Nigeria

Concentrations and health risk parameters of heavy metals in water samples from Epe Lagoon in Lagos State, Nigeria

Determination of physicochemical parameters and assessment of trace metals bioaccumulation in the Lagos lagoon and edible tissues of the southern pink shrimp (Farfantepenaeus notialis - Pérez-Farfante, 1967)

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