Accumulation Variations of selected heavy metals in Barbus ...
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Accumulation Variations of selected heavy metals in Barbus ...
(WHO) standard. Keywords: Heavy metal, Barbus xanthopterus, Karoon, Dez, Khuzestan, Iran ... biodegradable, their way in food chain through a number of path ways and ... These substances are toxic to aquatic life. (Frostner and Wittman ...
Iranian Journal of Fisheries Sciences
11(2) 372-382
2012
Accumulation Variations of selected heavy metals in Barbus xanthopterus in Karoon and Dez Rivers of Khuzestan, Iran Mohammadi M.1*; Askary Sary A.2; Khodadadi M.2 Received: March 2011 Accepted: August 2011
Abstract The concentrations of Cd, Pb, Ni and Hg were determined in gill, liver and muscle of Barbus xanthopterus in down streams of Karoon and Dez Rivers during summer 2009. Heavy metal concentrations varied significantly, depending on the types of the tissue in fish species. The levels of heavy metals such as Cd, Pb, Ni and Hg in the Barbus xanthopterus of Karoon River were higher than in Barbus xanthopterus of Dez River (Pliver>muscle. The concentration of Hg in Karoon River was in the sequence liver> gill> muscle but, in Dez River, it was in the sequence liver> muscle > gill. Among heavy metals (Cd, Pb, Ni and Hg), the accumulation of Pb was more than other heavy metals in fish (P Ni, but heavy metal concentrations in gill of B. xanthopterus in Karoon and Dez Rivers decreased in the Discussion In this study, the concentration of heavy metals in gill were higher than those in other tissues, except for Hg which was high in liver (P
