Affiliation:
1. 1Department of Toxicology, School of Medicine, Campus de Ofra, La Laguna University, La Laguna, Santa Cruz de Tenerife, Spain
2. 2Health and Inspection Service Laboratory, Health Tenerife Area, Rambla General Franco, 53, 38006 Santa Cruz de Tenerife, Spain
3. 3Laboratory of Medical Physics and Environmental Radioactivity, La Laguna University, La Laguna, Santa Cruz de Tenerife, Spain
4. 4Science and Navigation Techniques Area, Escuela Técnica Superior de Navegación, Máquinas y Radioelectrónica Naval, La Laguna University, La Laguna, Santa Cruz de Tenerife, Spain
5. 5Preventive Medicine, Campus de Ofra, La Laguna University, La Laguna, Santa Cruz de Tenerife, 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.
Publisher
International Association for Food Protection
Subject
Microbiology,Food Science