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Cadmium in Cephalopod Molluscs: Implications for Public Health

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Abstract:

Cadmium concentrations were measured in the flesh and hepatopancreas (digestive gland) of 1,392 specimens of different species of cephalopod molluscs (broadtail squid, spider octopus, curled octopus, horned octopus, elegant cuttlefish, and pink cuttlefish) to determine whether maximum levels fixed by the European Commission were exceeded. In all species, mean cadmium concentrations were higher in hepatopancreas than in flesh. Large differences among the different species were also observed. Pink cuttlefish and spider octopus had the highest concentrations for both flesh (spider octopus, 0.77 μg g−1 ; pink cuttlefish, 0.87 μg g−1) and hepatopancreas (spider octopus, 9.65 μg g−1 ; pink cuttlefish, 18.03 μg g−1), and the lowest concentrations were encountered in broadtail squid (flesh, 0.13 μg g−1 ; hepatopancreas, 2.48 μg g−1). The other species had intermediate concentrations of 0.20 to 0.30 μg g−1 in flesh and 5.46 to 8.01 μg g−1 in hepatopancreas. Concentrations exceeding the limit proposed by the European Commission (1.00 μg g−1) were observed in 44.4 and 40.0% of flesh samples of spider octopus and pink cuttlefish, respectively. The estimated weekly intake, 0.09 to 0.66 μg/kg body weigh, was below the provisional tolerable weekly intake set by the World Health Organization.

Document Type: Research Article

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