Abstract
Concentrations of some heavy metals in water samples from Ajiwa and Jibia irrigation Dams of Katsina State were determined using Micro Plasma Atomic Emission Spectroscopy (MP-AES). The water samples were analyzed to determine zinc (Zn), cadmium (Cd), copper (Cu), nickel (Ni), cobalt (Co), lead (Pb), manganese (Mn) and chromium (Cr) contents. The mean concentrations (mg/L) of the heavy metals in water samples of Ajiwa and Jibia dams respectively were: zinc (1.00±0.010, 0.04±0.010); cadmium (0.03±0.010, ND); copper (0.03±0.010, ND); lead (0.01±0.001, 0.02±0.001); manganese (0.21±0.001, 0.18±0.001); and chromium (0.05±0.001, 0.05±0.001), while nickel and cobalt were not detected in both samples. The P value (0.60314) indicates that there is no significant difference in the metal contents between the water bodies. Assessment of these metals in both water samples shows that none of the metals was above maximum permissible limit. However, cadmium and chromium concentrations were found to be at the maximum permissible level allowed in irrigation water. These findings therefore indicated that, the two water bodies are suitable and safe for irrigation purposes
Highlights
Water is an important resource or mineral which sustains life on earth
The release of pollutants into the environment may occur naturally or due to anthropogenic activities, which results into soil, water and air pollution leading to many health hazards (Kankia and Abdulhamid, 2014)
From the chemical point of view, heavy metals are among the significant environmental pollutants that enter into the food chain (Kankia and Abdulhamid, 2014)
Summary
Water is an important resource or mineral which sustains life on earth. its assessment to determine how safe it is in different parts of the world is very crucial. The release of pollutants into the environment may occur naturally or due to anthropogenic activities, which results into soil, water and air pollution leading to many health hazards (Kankia and Abdulhamid, 2014). The significant alterations of industrial development in the recent past lead to increased discharge of chemical effluents into the environment, resulting in damage to aquatic life in many countries around the world. From the chemical point of view, heavy metals are among the significant environmental pollutants that enter into the food chain (Kankia and Abdulhamid, 2014). It can be from atmospheric deposition, geological weathering, or the discharge of waste (Esi, 2012). It has become paramount to investigate the quality of these water bodies, as they are highly dependent on for irrigation and other vital functions they provide to the populace and residents of the state at large
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