Cadmium accumulation in Chalcalburnus chalcoides in Anzali Wharf
Subject Areas : Water Pollution
1 - Marine Environment Dept,, Faculty of Marine Science and Technology, Islamic Azad University North Tehran North Branch
Keywords: Cd, Chalcalburnus chalcoides, Anzali Wharf, Gill,
Abstract :
Thisstudy was performed in autumn 2008 in order to determine Cd accumulation in thetissuesof gill, kidney, skin and muscle of Chalcalburnuschalcoides in Anzali Wharf in the 10 km2 zone. The samples werecollected from 12 points which were then analyzed by flame atomic absorptionspectrophotometer after biometry and separation of the targeted tissues andchemical digestion. According to the results, there was no significantrelationship between the weight and length of fish and metal concentration. Thefish with lower range of weight had more Cd, but different concentration rangeof metals was found in fish with higher range of weight. Maximum Cd was foundin gill (0.94±0.015 mg/kg) and minimum concentration was foundin muscle (0.02±0.014 mg/kg). The accumulation of cadmium in tissuesranged as follows: gill>skin>kidney>muscle. As specified theconcentration of Cd in gill and skin was not significantly different but it wassignificantly different in other tissues. The level of metal was compared with(CODEX, 2007) standard. Results showed that Cd in gill was significantlydifferent at 0.05 levels.