ACCUMULATION OF SOME TRACE METALS IN TILAPIA FISH, WATER AND SEDIMENT IN MOD NEAR THE CENTER

The goal of this study was to look at the concentration and distribution of four trace metals (Cd, Pb, Cu, and Zn) in Oreochromis aureus tissues (gills, liver, kidney, ovaries, and muscle) collected from the main outfall drain (MOD) during the summer of 2015, as well as in water (dissolved and particulate) phases and sediment (exchangeable and residual). Total Organic Carbon (TOC percent) and sediment texture were measured in the research area's sediment as a percentage.

Station 1 was generally more contaminated than stations 2 and 3, which might be due to the impact of pollution sources in this station, including home sewage effluents without treatment from the residual region near the mentioned. With the exception of Cd and Pb, trace metals were found at higher amounts in the residual phase in sediment than in the exchangeable phase at all sites during the study period.

Cd, Pb, Cu, and Zn concentrations in the dissolved phase of water were 0.03, 0.46, 0.08, and 11.54 g/l, respectively, whereas particulate phase values were 9.84, 22.11, 17.37, and 63.75 g/g dry weight. Cd (4.40, 0.05), Pb (27, 1.64), Cu (5.54, 9.02), and Zn (2.65, 17.46) g/g dry weight were the mean amounts of these elements in the exchangeable and residual phases of sediment, respectively.

The mean concentrations of the examined tissues in fish tissues oscillated. Cd (0.13, 0.15, 1.53, 0.06 and 0.02), Pb (10.23, 14.19, 13.01, 0.7 and 2.31), Cu (20.01, 15.61, 10.41, 9.10, and 16.00), and Zn (35.12, 25.01, 18.20, 70.71 and 20.11) g/g dry weight were found in Oreochromis aureus tissues (liver, gills, kidney, ovary, and muscle).

The amounts of the investigated metal varied in different fish tissues, according to the findings. The concentrations of the metals tested differed amongst tissues from the same species. Despite the possibility of trace metal contamination, the results of this study suggest that eating MOD fish is safe for human health.

Please see the link :- https://www.ikprress.org/index.php/JOGEE/article/view/819