Human risk associated with potential exposure to heavy metals in a gadoid fish species from selected markets in Benin City, Nigeria

Wangboje, O. M.; Ekundayo, O. T.; Osasehi, E.J.; Erhayimwen, Michael; Efenudu, U.I.

doi:10.4314/tfb.v28i2.2

Cited by 3 publications

(3 citation statements)

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“…This depicts the state of the water body from which the fish was caught. Though, not much has been done on TTM of frozen seafood, few works by [39][40][41] revealed > 1 TTM for the different fish species they examined. Guideline values used here are as documented for livestock [17]…”

Section: Risk Assessment Index Of Metalsmentioning

confidence: 99%

Heavy Metal Burden and Health Risk Assessment of Fresh, Frozen and Smoked Fish from a Local Market in Southwest Nigeria

Oghenochuko

Kehinde²,

Adigun³

et al. 2022

Pak J Anal Environ Chem

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Heavy metals load in fish environment and fish products had been an issue of public concern. The burden of some heavy metals in fresh tilapia (Oreochromis niloticus), frozen Herring (Clupea harengus), smoked herring, and associated risk to man was investigated. Atomic absorption spectrometry was used to determine metal concentrations. Standard risk measurement indices [daily metal intake (DMI), hazard quotient (HQ), and health risk index (HRI)] were used. Levels of Mn and Fe were significantly different (p<0.05) among the fish species, while the burden of other metals was low to not detected in the samples. The level of Cu (0.11±0.04), Zn (2.51±0.82), and Fe (8.72±4.41) were recorded in the bones of smoked herrings, while the highest levels of Mg were recorded in fresh tilapia. Gills recorded significantly (p<0.05) high levels of Mg (1.16±0.02), Fe (14.92±0.53), Cu (0.10±0.00), and Zn (1.35±0.04). The muscle of the frozen herring records the highest burden of these metals. Mn, Fe, Cu, and Cd revealed the highest HRI in all fish samples and age categories, especially for nine years old and below children. In conclusion, health fish indicators revealed that Mn, Fe, Cu, and Cd pose a risk to the populace and, with long time consumption, can do more damage to consumers, especially frozen herring.

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Section: Risk Assessment Index Of Metalsmentioning

confidence: 99%

Heavy Metal Burden and Health Risk Assessment of Fresh, Frozen and Smoked Fish from a Local Market in Southwest Nigeria

Oghenochuko

Kehinde²,

Adigun³

et al. 2022

Pak J Anal Environ Chem

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“…1). An extensive description of the study area has been published by [24] and [31]. A pre-survey of markets for the experimental fish species was done in order to pin point suitable market outlets for the convenient collection of samples of fish.…”

Section: A Brief Description Of the Study Areamentioning

confidence: 99%

Polychlorinated Biphenyls in Imported Fish

Wangboje

Okotie

2021

EJFOOD

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Polychlorinated biphenyls (PCBs) are persistent organic pollutants (POPs) which have been described as organohalogenic and legacy contaminants that are hazardous to both wildlife and man. The paucity of ecotoxicological data on the PCB content in commercially important fish in Benin Metropolis, Nigeria, warranted this research. In this stead, the PCB profile in the Atlantic Herring (Clupea harengus, Family: Clupeidae, mean length=31.59 cm; Mean weight=274.98 g) marketed in Benin Metropolis, was determined via Gas Chromatographic technique in order to evaluate its suitability for human consumption and to provide baseline data for this contaminant in commercially important fish species. The summary statistics for the mean concentrations of detectable PCBs in C. harengus ranged from 0.019 mg/kg (PCB 118, 156) to 0.434 mg/kg (PCB 126), with a total of 0.581 mg/kg (w/w) while the mean concentrations of PCBs in C. harengus by market ranged from 0.012 mg/kg (PCB 118) at Santana market to 0.526 mg/kg (PCB 126) at New Benin market with no observed significant difference (p>0.05) in the mean concentrations of PCBs in fish between markets. The toxicity quotient (TQ) values for PCBs in C. harengus ranged from 0.0095 (PCB 118, 156) to 0.217(PCB 126) while the estimated daily intake (EDI) values in mg/person/day for PCBs ranged from 0.00076 (PCB 118, 156) to 0.017 (PCB 126). A toxic equivalency (TEQ) value of 0.04342 while the total PCB content in C. harengus according to market ranged from 0.469 mg/kg (Santana market) to 0.658 mg/kg (Uselu market). The total toxicity of mixtures (TTM) index was 0.291. The PCB levels in fish decreased below International threshold values suggesting suitability for human consumption. Continous monitoring of this fish species for toxic concentrations of PCBs was proferred.

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“…In addition, it is a good source of phosphorus, iron, selenium, taurine, iodine and a host of macronutrients (Spore, 2012). Because fishes are at the end of aquatic trophic level they have a higher tendency to accumulate heavy metals in their tissues via biomagnification (Wangboje et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Heavy metal profile in smoked Atlantic cutlass fish (Trichiurus lepturus, linnaeus 1758) from some major markets in Benin metropolis, Nigeria

Wangboje,

Okhuarobo

2021

ADAN J. Agric

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The concentrations of heavy metals (Pb, Cd, Cu and Zn), in smoked Trichiurus lepturus (Trichiuridae) from some major Markets in Benin Metropolis, Nigeria, were determined employing Atomic Absorption Spectrophotometric technique, in order to ascertain their suitability for human consumption against the dearth of data regarding the metal content of such fish. The mean concentrations of metals in fish ranged from 0.118 mg/kg for Cd to 72.738 mg/kg for Zn. The mean concentration of Zn in fish ranged from 51.80 mg/kg at New Benin Market to 89.28 mg/kg at Ramat Market while the mean concentration of Cu ranged from 6.58 mg/kg at Oba Market to 9.29 mg/kg at Ramat Market. The mean concentration of Cd ranged from below detection limits at Oba and New Benin Markets to 0.31 mg/kg at Ramat Market while the mean the mean concentration of Pb ranged from 0.39 mg/kg at New Benin Market to 0.75 mg/kg at Uselu Market. There was no significant difference (P>0.05) in the mean concentrations of metals in fish between Markets. The toxicity quotient for heavy metals ranged from 0.271 for Cu to 2.425 for Zn. The mean concentrations of Zn, Cd and Pb in fish exceeded the Food and Agriculture Organization and Commission Regulation maximum limits for heavy metals in fish indicating that fish must be consumed with caution, to avert heavy metal poisoning.

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Human risk associated with potential exposure to heavy metals in a gadoid fish species from selected markets in Benin City, Nigeria

Cited by 3 publications

References 0 publications

Heavy Metal Burden and Health Risk Assessment of Fresh, Frozen and Smoked Fish from a Local Market in Southwest Nigeria

Heavy Metal Burden and Health Risk Assessment of Fresh, Frozen and Smoked Fish from a Local Market in Southwest Nigeria

Polychlorinated Biphenyls in Imported Fish

Heavy metal profile in smoked Atlantic cutlass fish (Trichiurus lepturus, linnaeus 1758) from some major markets in Benin metropolis, Nigeria

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