The presence of toxic heavy metals in tuna fishes from Laccadive sea and concomitant health risk

Concentrations of heavy metals in Yellowfin and Skipjack tuna fishes from the Laccadive sea were determined by inductively coupled plasma optical emission spectroscopy (ICP-OES) to evaluate the human health hazards via their consumption. The samples were collected from different atolls of Maldives to ensure a good representation of sample distribution. The metal concentration in tuna fish is found to be below the maximum tolerable limit set by different international organisations. The target hazard quotient values for individual metals were well below the limiting value of 1, indicating an insignificant health risk via the dietary intake of fish. The maximum targeted cancer risk value was 10 -4, indicating low carcinogenic risk from the consumption of tuna fish from the Maldives. Hence, the consumption of tuna from the Laccadive Sea is safe for human health.

Automated summary

This study determined the concentrations of heavy metals in Yellowfin and Skipjack tuna fishes from the Laccadive sea using ICP-OES. The results showed that the metal concentration in tuna fish was below the maximum tolerable limit set by international organizations. The dietary intake of fish from the Laccadive Sea had an insignificant health risk and low carcinogenic risk. Therefore, the consumption of tuna from the Laccadive Sea is safe for human health.