Estimation of Some Heavy Metals Intake through Tuna Loins (Thunnus Sp) Produced in Côte D’ivoire
SIKA Andrée Emmanuelle, AKE ASSI Yolande, KOFFI Kouamé Mathias, KOFFI-NEVRY Rose, BIEGO Henri

Abstract
The aim of the present study was to measure concentrations of three heavy metals in tuna loins of four tuna species from two industries in Côte d’Ivoire during September 2011 to September 2013. Cadmium (Cd) and lead (Pb) concentrations were measured by graphite furnace atomic absorption spectrometry and Mercury (Hg) was measured by cold vapour atomic absorption spectrometry. Results showed that the concentration varied from 0.029 to 0.470 with a mean of 0.203 ± 0.103 mg/kg for Hg; from 0.002 to 0.092 with a mean of 0.015 ± 0.014 mg/kg for Cd and from 0.016 to 0.310 with a mean of 0.162 ± 0.057 mg/kg for Pb. These concentrations are lower than the maximum permissible values in European and Ivoirian regulation. The average weekly intakes of Cd, Pb and Hg per body weight values respectively 0.39; 0.97 and 1.21 not exceeded the Provisional Tolerable Weekly Intake (PTWI) established.

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