<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Present study investigated trace element concentrations in either muscles or whole samples of 37 finfish and crustaceans harvested with gillnet from fresh (Olomore), marine (Eti osa) and brackish (Lekki Lagoon) waters of Ogun and Lagos states, Nigeria between June and August 2013. Trace elements were determined using ICP-MS after digestion with a microwave autoclave system. The results revealed that the general trend of trace elements in the sampled finfish and crustaceans was marine > brackish > freshwater. If all the samples are considered, 16.2% and 13.5% exceeded the 20 μg g−1 and 30 μg g−1 limits for Cu and Zn, respectively, as set by the European Union, while 71%, 50%, 79% of marine, fresh and brackish samples, respectively, exceeded the limit of 48 mg Fe per 60 kg person as set by FAO/WHO. In addition, samples exceeded the acceptable limit set by WHO/FAO, thus adequate efforts should be placed on the monitoring of effluents that are being discharged into open water bodies in Nigeria.</p></abstract>

Present study investigated trace element concentrations in either muscles or whole samples of 37 finfish and crustaceans harvested with gillnet from fresh (Olomore), marine (Eti osa) and brackish (Lekki Lagoon) waters of Ogun and Lagos states, Nigeria between June and August 2013. Trace elements were determined using ICP-MS after digestion with a microwave autoclave system. The results revealed that the general trend of trace elements in the sampled finfish and crustaceans was marine > brackish > freshwater. If all the samples are considered, 16.2% and 13.5% exceeded the 20 μg g−1 and 30 μg g−1 limits for Cu and Zn, respectively, as set by the European Union, while 71%, 50%, 79% of marine, fresh and brackish samples, respectively, exceeded the limit of 48 mg Fe per 60 kg person as set by FAO/WHO. In addition, samples exceeded the acceptable limit set by WHO/FAO, thus adequate efforts should be placed on the monitoring of effluents that are being discharged into open water bodies in Nigeria.

Metal contents in fish and crustaceans from brackish, freshwater and marine systems in South-Western Nigeria

Department of Environmental Management and Toxicology

Institute of Chemistry, Analytical Chemistry

Croatian Journal of Fisheries

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Present study investigated trace element concentrations in either muscles or whole samples of 37 finfish and crustaceans harvested with gillnet from fresh...

Metal contents in fish and crustaceans from brackish, freshwater and marine systems in South-Western Nigeria

Published Online: Oct 16, 2018

Page range: 143 - 152

Received: Mar 10, 2017

Accepted: Sep 19, 2017

DOI: https://doi.org/10.1515/cjf-2017-0018

Keywords
Heavy metals, Finfish, Crustaceans, Water ecosystems, Nigeria

© 2017 Olanrewaju Olujimi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Metal contents in fish and crustaceans from brackish, freshwater and marine systems in South-Western Nigeria

Published Online: Oct 16, 2018

Page range: 143 - 152

Received: Mar 10, 2017

Accepted: Sep 19, 2017

DOI: https://doi.org/10.1515/cjf-2017-0018

KeywordsHeavy metals, Finfish, Crustaceans, Water ecosystems, Nigeria

© 2017 Olanrewaju Olujimi et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Heavy metals, Finfish, Crustaceans, Water ecosystems, Nigeria