Ecotoxicological Risk Assessment of Polycyclic Aromatic Hydrocarbons (PAHs) in Smoke-Dried Clarias gariepinus (Burchell, 1822) from Selected Markets in Benin City, Nigeria

Oiseoje Michael Wangboje

A chapter in Pollution Annual Volume 2024 from IntechOpen

Abstract: Polycyclic aromatic hydrocarbons (PAHs) are organic pollutants that are endocrine disruptors. There is paucity of ecotoxicological data on the PAH content in smoke-dried Clarias gariepinus from markets in Benin City, Nigeria, which this research attempted to produce employing Gas Chromatographic technique. The summary statistics for PAH levels (?g/kg) in smoke-dried C. gariepinus ranged from 0.006583 (Pyrene) to 51.91 (Napthalene) while the mean levels of PAHs in fish by market point ranged from 0.00333 (Pyrene) at Oliha to 55.97 (Napthalene) at New Benin. The hazard (HQ) quotient ranged from 0.0013 for Pyrene to 10.38 for Napthalene while the toxic equivalency (TEQ) for Benzo(a)pyrene was 0.02417. The estimated daily intake (mg/person/day) for PAHs ranged from 0.000003426 (Pyrene) to 0.027 (Napthalene) while the cancer risk factor (CRF) and risk specific dose (RSD) for Benzo(a)pyrene were 6.56 x 10--6 and 16.26 mg/person/day respectively. The research revealed that the critical congener in smoke-dried C. gariepinus was Napthalene as its threshold in smoked fish was far exceeded thus positing it as the congener of immediate health concern. The study concluded that smoke-dried C. gariepinus should be consumed with caution in order to avert adverse health related effects in the long run.

Keywords: polycyclic aromatic hydrocarbons; cancer risk factor; toxic equivalency; Hazard quotient; ecotoxicological risk (search for similar items in EconPapers)
JEL-codes: Q52 Q53 (search for similar items in EconPapers)
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Persistent link: https://EconPapers.repec.org/RePEc:ito:pchaps:309752

DOI: 10.5772/intechopen.111511

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