Abstract
This study assesses the concentrations of arsenic (As) in water, muscle tissue of four demersal fish species (Chrysichthys nigrodigitatus, Mugil cephalus, Liza falcipinnis and Bathygobious soporator) and whole tissues of periwinkle (Tympanotonus fuscatus) in Lagos Lagoon, Nigeria. The observed mean total As concentration in water (1.29μgl−1) during the wet and dry seasons did not exceed the World Health Organization (WHO) guideline value of 10μgl−1. Among the examined biota, Tympanotonus fuscatus recorded higher As levels (2.31±0.24mgkg−1) and Chrysichthys nigrodigitatus recorded the least As content (0.67±0.08mgkg−1). A significant positive correlation (p 2) were obtained for Tympanotonus fuscatus, suggesting the potential for non-carcinogenic health outcomes in adults after a prolonged period of consumption. This calls for continuous monitoring and enforcement of regulations to ensure safety of fishery resources from Lagos Lagoon.
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