Trace Elements and Metals in Farmed Sea Bass and Gilthead Bream from Tenerife Island, Spain
Abstract:The aim of this study was to determine the levels of metals (Ca, K, Na, Mg) and trace metals (Ni, Fe, Cu, Mn, Zn, Pb, Cd) in two fish species (gilthead bream [Sparus aurata] and sea bass [Dicentrarchus labrax]) collected from fish farms located along the coast of Tenerife Island. Ca, K, Na, Mg, Fe, Cu, Zn, and Mn were measured by flame atomic absorption spectrometry, whereas Pb, Cd, and Ni were determined using graphite furnace atomic absorption spectrometry. Mean Fe, Cu, Mn, and Zn contents were 3.09, 0.59, 0.18, and 8.11 mg/kg (wet weight) in S. aurata and 3.20, 0.76, 0.24, and 10.11 mg/kg (wet weight) in D. labrax, respectively. In D. labrax, Ca, K, Na, and Mg levels were 1,955, 2,787, 699.7, and 279.2 mg/kg (wet weight), respectively; in S. aurata, they were 934.7, 3,515, 532.8, and 262.8 mg/kg (wet weight), respectively. The Pb level in S. aurata was 7.28 ± 3.64 μg/kg (wet weight) and, in D. labrax, 4.42 ± 1.56 μg/kg (wet weight). Mean Cd concentrations were 3.33 ± 3.93 and 1.36 ± 1.53 μg/kg (wet weight) for D. labrax and S. aurata, respectively. All Pb and Cd levels measured were well below the accepted European Commission limits, 300 and 50 μg/kg for lead and cadmium, respectively.
Document Type: Research Article
Affiliations: 1: Department of Toxicology, School of Medicine, Campus de Ofra, Santa Cruz de Tenerife, Spain 2: Department of Toxicology, School of Medicine, Campus de Ofra, Santa Cruz de Tenerife, Spain. email@example.com 3: Health and Inspection Service Laboratory, Health Tenerife Area, Rambla General Franco, 53, 38006 Santa Cruz de Tenerife, Spain 4: Laboratory of Medical Physics and Environmental Radioactivity, Santa Cruz de Tenerife, Spain 5: Science and Navigation Techniques Area, Escuela Técnica Superior de Navegación, Máquinas y Radioelectrónica Naval, Santa Cruz de Tenerife, Spain 6: Preventive Medicine, Campus de Ofra, La Laguna University, La Laguna, Santa Cruz de Tenerife, Spain
Publication date: November 1, 2011
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