Risk assessment of the heavy metals mercury, cadmium, lead and arsenic in the two species fish Tor grypus and Capoeta capoeta in Helle River from Bushehr

Nowadays environmental pollutants, heavy metals attracted many researchers as one of the most important factors are threatening humans in many areas. The present study was done in order to determine concentrations of heavy metals, He, Pb, Cd and As in the two species fish Tor grypus and Capoeta capoeta in Helle River from Bushehr in 2014. In this research 60 samples of fish were prayed from Helle River. Evaluation of heavy metals was occurred by atomic absorption Perkin Elmer 4100. The concentration of heavy metals mercury, lead, cadmium and arsenic in two fish species were 0.0604-0.0755, 0.213-0.255, 0.108-0.134 and 0.109-0.142 mg/kg. In this study, the risk index heavy metals mercury, lead, cadmium and arsenic about Tor grypus and Capoeta capoeta fish consumption by adults was lower than 1, but risk factor for mercury, cadmium and lead for children was higher than more 1, respectively. Concentration of Pb in two fish species was higher than more other metals (P