Determination and Assessment of Three Heavy Metal Content (Cd, Pb and Zn) in Scomberomorous Commerson Fish Caught From the Persian Gulf



Sadeghi E¹ ; Mohammadi M² ; Sharafi K^{3, 4} ; Bohlouli S⁵
Source: Bulgarian Chemical Communications Published:2015

Abstract

Most of fish that sold in southern city of Iran captured from the Persian Gulf. Heavy metals are recognized as one of the most important pollutants, that effect on human health even in trace amount. A study was conducted to quantitate the concentrations of heavy metals, such as Cd, Pb and Zn in Scomberomorous commerson fish caught off the coast of Persian Gulf. 25 fish samples of Scomberomorous commerson were collected between June - May 2012 at three different sites from Persian Gulf. The Cd, Pb and Zn concentrations were determined with an atomic absorption Spectrophotometer. The results expressed in micrograms of metal per dry weight gram of fish (μg/g). Statistical analysis of data was carried out using SPSS 16.0 software. Pb, Cd and Zn concentration in muscle of S.commerson were obtained 1.43-2.02 ppm dry wt, 0.11-0.27 ppm dry wt and 7.39-8.73, respectively. Heavy metal accumulation in muscle order was Zn>Pb>Cd. Pb concentration was increased with increase of length of fish. ANOVA was reveal that concentration differences among the heavy metals were high (p<0.05). In all samples, Zn level was higher than other metals and Cd was minimum. Pb concentrations exceeded FAO/WHO, IAEA-407, TFC, EC and Chine but had not exceeded the guidelines limits except for Range of International Standards. Zn values match with all noted Standards. The metal accumulation in the aquatic organism may be species and size -dependent. © 2015 Bulgarian Academy of Sciences, Union of Chemists in Bulgaria.