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Biomagnifications of mercury and methylmercury in tuna and mackerel


Hajeb, Parvaneh and Selamat, Jinap and Ismail, Ahmad (2010) Biomagnifications of mercury and methylmercury in tuna and mackerel. Environmental Monitoring and Assessment, 171 (1-4). pp. 205-217. ISSN 0167-6369; ESSN: 1573-2959


Seawater may be contaminated by harmful substances, including toxic elements released by human activities. The present study evaluates the total mercury and methylmercury concentrations and their correlations to fish body size in longtail tuna and short-bodied mackerel from Chendring, Kuantan, at east coast and Kuala Perlis at west costs of Peninsular Malaysia during May to November 2007. Total mercury and methylmercury in muscle tissue of 69 samples of longtail tuna and short-bodied mackerel, ranged from 0.180 to 1.460 μg/g and 0.0.169-0.973 μg/g and 0.251-1.470 μg/g and 0.202-1.352, whereas the methylmercury to total mercury ratio ranged from 70% to 83%, respectively. Samples of both species from the east coast showed higher levels of mercury compared to those from west coast. In all of the locations, significant positive correlations were found between fish body weight and mercury content (R(2) > 0.470). The estimated weekly intake of total mercury and methylmercury from the consumption 66.33 g/week of short-bodied mackerel and 18.34 g/week of longtail tuna (based on local dietry survey) was found to be lower than the maximum limit of 5 and 1.5 μg/kg bodyweight established by FAO/WHO and codex, respectively.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Food Science and Technology
Faculty of Science
DOI Number: https://doi.org/10.1007/s10661-009-1272-3
Publisher: Springer Netherlands
Keywords: Mercury; Methylmercury; Biomagnification; Tuna; Mackerel
Depositing User: Nurul Ainie Mokhtar
Date Deposited: 08 Jun 2015 05:11
Last Modified: 14 Sep 2015 07:55
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1007/s10661-009-1272-3
URI: http://psasir.upm.edu.my/id/eprint/13421
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