期刊名称：Research Journal of Environmental and Earth Sciences
印刷版ISSN：2041-0484
电子版ISSN：2041-0492
出版年度：2011
卷号：3
期号：1
页码：8-13
出版社：Maxwell Science Publications
摘要：Samples of the Black-chin Tilapia were analyzed for the concentration of heavy metals (Arsenic, cadmium, chromium, copper, iron, mercury, nickel and zinc) using atomic absorption spectrophotometry and instrumental neutron activation analysis. The sequence of order of the heavy metals measured in the fish samples observed from the Sakumo lagoon was as follows: Fe > Cu > Mn> V> Hg > Cd, respectively. The results showed elevated levels of iron, copper and managanese in all the fish samples although mercury and cadmium were available in relatively low concentration in the most of the fish samples. Fe, Mn, and Zn concentration in fish were greater than WHO/FAO certified values. Hazard index < 1 suggests unlikely adverse health effects whereas HI $ 1 suggests the probability of adverse health effects. Although the heavy metals analysed in Blackchin Tilapia did not pose any immediate health risk to humans but due to the bioaccumulation and magnification of these heavy metals in humans, it is essential to safeguard levels of the metals in the environment.
