Heavy metals (Cd, Cu, Ni and Pb) content in two fish species of Persian Gulf in Bushehr Port, Iran


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Heavy metal (HMs) pollution of aquatic environment has become a great concern in recent years. In this study, cadmium (Cd), copper (Cu), nickel (Ni) and lead (Pb) levels were determined in muscle and skin of two important consumed fishes (Indo-Pacific king mackerel and Tigertooth croaker) in Bushehr Province in the Southwestern of Iran. Heavy metal concentrations were analyzed by using inductively coupled plasma (ICP). The mean contents of metal, expressed in mg/kg wet weight, varied from 0.17 to 0.26 for Cd, 1.25 to 1.84 for Cu, 0.6 to 0.84 for Ni and 0.31 to 0.7 for Pb. Results showed that the highest and lowest contents of heavy metals in muscle and skin of both fish samples were related to Cu and Cd concentration, respectively, and heavy metal contents in both skin fish samples and muscle of Tigertooth croaker were found to decrease in sequence as Cu>Pb>Ni>Cd.

INTRODUCTION Heavy metal (HMs) pollution of aquatic environment has become a great concern in recent years. HMs can have toxic effects on organs (Macfarlane and Burchettt 2000). HMs contents in aquatic environment have increased because of different activities such as industrial, domestic and agricultural (Kalay and Canli 2000; Mance, 1987). Nowadays, because of toxicity and accumulative behavior of HMs, they can make different changes in aquatic environ- ment such as species diversity (Health, 1987). HMs can enter into water via drainage, atmosphere, soil erosion and all human activities by different ways. With increasing HMs in the environment, these elements enter the bio- geochemical cycle (Kerdrick et al., 1992; Mansour and Sidky 2002; Riget et al., 2004). HMs can enter from contaminated water into fish body by different routes and accumulate
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کلمات کلیدی:

Heavy             Bushehr         Iran.    
metal     fish    
تعداد بازدید:   ۳۱


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