Distribution and health risk assessment of cadmium, lead, and mercury in freshwater fish from the right bank of Senegal River in Mauritania
| Autor: | Mohamed Lemine Cheikh Zamel, Mohamed Ould Brahim, Angelo Santana del Pino, Sarah Montesdeoca-Esponda, Zeinebou Sidoumou, Mohamed Salem El Mahmoud-Hamed, Mohamed Sidi’Ahmed-Kankou, José Juan Santana-Rodiguez, Hasni T’feil |
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| Rok vydání: | 2019 |
| Předmět: |
Clarias gariepinus
Gill Gills Veterinary medicine 010504 meteorology & atmospheric sciences chemistry.chemical_element 010501 environmental sciences Management Monitoring Policy and Law 01 natural sciences Risk Assessment Rivers Metals Heavy Animals Humans Catfishes 0105 earth and related environmental sciences General Environmental Science Cadmium biology Aquaculture of tilapia Muscles Mauritania Aquatic animal General Medicine Cichlids biology.organism_classification Pollution Hazard quotient Oreochromis chemistry Liver Seafood Freshwater fish Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental monitoring and assessment. 191(8) |
| ISSN: | 1573-2959 |
| Popis: | Clarias gariepinus (African catfish) and Oreochromis niloticus (Tilapia fish) from the right North bank of the Senegal River in Mauritania (Rosso, Boghe, and Kaedi) were sampled during 1-year monitoring and tested for lead (Pb), cadmium (Cd), and mercury (Hg) levels. Fishing from the Senegal River is an essential source of food for the local population and these two species are the most common. Muscle presents higher Hg concentrations than liver and gills for both species. Gill Hg concentrations from Kaedi are higher than Boghe and Rosso for both species. The Cd levels measured in gills were low in the different locations and revealed high variation throughout the 1-year study. No significant differences were observed between concentrations of Cd in Clarias gariepinus and Oreochromis niloticus parts. Statistical treatment did not show a considerable variation of Pb concentration between the different parts, revealing lower levels in gills from Boghe than the ones from Kaedi and Rosso. The associated human health risk was calculated from the concentration levels using the target hazard quotient (THQ) approach. Even though all the THQ values and the hazard index were lower than 1 for the determined trace metals when the exposure frequency was not greater than three times a week, eating frequency in the studied locations sometimes is greater than five, thus posing a health risk, especially at Kaedi and Boghe. |
| Databáze: | OpenAIRE |
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