Variations in Toxic Metal Levels of Two Fish Species, Pomatomus saltatrix and Dicentrarchus labrax, and Risk Estimation for Children

The concentrations of five toxic metals were monthly determined in two fish species,obtained from fish markets in Turkey during 2010—2011.For the determinations,AAS and ICP-AES were used.The obtained lead concentrations for all studied Pomatomus saltatrix(mean 635μg·kg-1)and Dicentrarchus labrax(mean 463μg·kg-1)samples were found to be significantly higher than the maximum allowances concentration(MAC)of 300μg·kg-1.Mean chromium(324μg·kg-1)and Cu(940μg·kg-1)concentrations in Pomatomus saltatrix were higher than in Dicentrarchus labrax(268μg Cr·kg-1 and 600μg Cu·kg-1)while Ni in Pomatomus saltatrix(216μg·kg-1)was lower in Dicentrarchus labrax(291μg·kg-1).The estimated non-carcinogenic and carcinogenic health risks by the Target Hazard Quotient and target carcinogenic risk indicate that there are no sytemic effects,and the risk of developing cancer over a human lifetime is between 2~9in 1 000 000.

The concentrations of five toxic metals were monthly determined in two fish species ,obtained from fish markets in Turkey during 2010-2011 .For the determinations ,AAS and ICP-AES were used .The ob-tained lead concentrations for all studied Pomatomus saltatrix （mean 635 μg ＆#183; kg -1 ） and Dicentrarchus labrax （mean 463 μg ＆#183; kg -1 ） samples were found to be significantly higher than the maximum allowances concentra-tion （MAC） of 300 μg ＆#183; kg -1 .Mean chromium （324 μg ＆#183; kg -1 ） and Cu （940 μg ＆#183; kg -1 ） concentrations in Pomatomus saltatrix were higher than in Dicentrarchus labrax （268 μg Cr ＆#183; kg -1 and 600 μg Cu ＆#183; kg -1 ） while Ni in Pomatomus saltatrix （216μg ＆#183; kg -1 ） was lower in Dicentrarchus labrax （291μg ＆#183; kg -1 ） .The estimated non-carcinogenic and carcinogenic health risks by the Target Hazard Quotient and target carcinogenic risk indi-cate that there are no sytemic effects ,and the risk of developing cancer over a human lifetime is between 2~9 in 1 000 000 .