Hg and 210Po in consumed fish of the Tadjoura Gulf (Djibouti): Levels and human health risk assessment
2021
Mahdi Ahmed, Moussa | Osman Awaleh, Mohamed | Rozmaric, Martina | Blinova, Oxana | Ibrahim Adan, Abdi-Basid | Said Ismael, Ismael | Ali Chirdon, Mahamoud
Hg and ²¹⁰Po were measured in the muscle tissue of commercially important fish species collected in the main coastal cities of the Djiboutian coast (Tadjoura Gulf) to evaluate the potential risk associated with their consumption. The levels of Hg among the different species ranged from 0.02 to 1.69 mg/kg w.w and exceeded tolerable limits as reported by the national regulation (2000-0727/PR/MAEM) and the Codex Alimentarius. The probabilistic distributions of health hazard were evaluated through Monte-Carlo simulation, which confirmed the carcinogenic risk from Hg. The levels of ²¹⁰Po ranged from 4.1 to 134.5 Bq/kg w.w among muscle tissues of the eight commercially important species. The carcinogenic risk was in an unacceptable range and simulation revealed that children were the most vulnerable population. The results obtained confirms that the health impact is reduced when consuming two servings per week.
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