Assessment of Four Heavy Metals Mercury, Lead, Copper and Cadmium Levels in Muscles of Import-ed Tilapia to Iran

Subject Areas : Journal of Chemical Health Risks

Behsan  Hemmatinezhad ¹ (Department of veterinary medicine, Shahrekord branch, Islamic Azad University, Shahrekord, Iran)
Mehdi  Moradi Sarmeidani ² (Department of veterinary medicine, Shahrekord branch, Islamic Azad University, Shahrekord, Iran)
Amir Hosein  Yoosefi ³ (Department of veterinary medicine, Shahrekord branch, Islamic Azad University, Shahrekord, Iran)

Received: 2017-04-26 Accepted : 2018-10-29 Published : 2017-04-26

Keywords: Heavy metals, Tilapia, Seafood safety,

Abstract :

This study was conducted to determine the residues of mercury (Hg), lead (Pb), copper (Cu) and cadmium (Cd) in the imported tilapia fillets. Thirty random samples from imported tilapia fillets were collected from different markets in Isfahan City, central Iran. They were analyzed using Graphite Furnace Atomic Absorption Spectrometer (Perkin Elmer 800) for Pb, Cu, Cd and flow injection mercury system (Perkin Elmer 400) for Hg. Out of the 30 tested samples, concentration of Hg, Pb, Cu and Cd in the tilapia fillets samples as mean± standard deviation were 0.083±.016, 0.638±0.067, 0.521± 0.081 and 0.136 ± 0.025 mg/kg, respectively. Among these, amounts obtained for all metals except for lead were lower than the permissible level specified by WHO (P<1%). The Pb concentrations in all examined samples were higher than WHO standards. The continuous consumption of these contaminated fish regularly for long time may lead to health troubles.

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