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Evaluation of the heavy metals (mercury, lead, and cadmium) contamination of sardine ( Sardina pilchardus ) and swordfish ( Xiphias gladius ) fished in three Algerian coasts

Authors
  • Mehouel, Fetta1
  • Bouayad, Leila1
  • Hammoudi, Abdel Hamid2
  • Ayadi, Ouarda3
  • Regad, Fifi4
  • 1 Laboratory of Food Hygiene and Quality Insurance System, High National Veterinary School, Algiers, Algeria
  • 2 Laboratory of Microbiology, Institute of Veterinary Sciences, Tiaret, Algeria
  • 3 Laboratory of Parasitology, Institute of Veterinary Sciences El Khroub, University of Frères Mentouri, Constantine 1, Algeria
  • 4 Laboratory of the Water and Sanitation Society, Algiers, Algeria
Type
Published Article
Journal
Veterinary World
Publisher
Veterinary World
Publication Date
Jan 02, 2019
Volume
12
Issue
1
Pages
7–11
Identifiers
DOI: 10.14202/vetworld.2019.7-11
PMID: 30936649
PMCID: PMC6431805
Source
PubMed Central
Keywords
License
Green

Abstract

Aim: This study aimed to evaluate mercury (Hg), cadmium (Cd), and lead (Pb) levels in 70 samples of sardine ( Sardina pilchardus ) and 30 samples of swordfish ( Xiphias gladius ) fished in the Algerian coasts. Materials and Methods: After the mineralization of the fish samples through the pressure digestion, the analyses were carried out by inductively coupled plasma atomic emission spectroscopy. Results: Mean concentrations of Hg, Cd, and Pb in sardine were 0.62, 0.55, and 2.13 mg/kg wet weight, respectively, while in swordfish, the concentrations were 0.56, 0.57, and 3.9 mg/kg wet weight, respectively. These results exceeded the Algerian and European legislation threshold values, whereas Hg’s concentration in swordfish remained close to and did not exceed the recommended thresholds (0.56 mg/kg wet weight). Conclusion: This fish may represent a hazard for consumers in Algeria. Systematic and periodic controls of heavy metals in fish are recommended, and risk assessment is needed to protect the consumer.

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