Evaluation of some heavy metals resulting from oil well leaks in the Ain Zala field and its surrounding areas on soil and water

Abstract

The ecology is being threatened by heavy metals, which are extremely hazardous compounds. Their prolonged persistent presence is what sets them apart. The purpose of this study was to measure the concentrations of Pb, Cd, Ni, Cr, V, and Fe in the soil and water surrounding underground petroleum leaks. Additionally, the physicochemical properties of the soil, water, and hydrocarbons were evaluated at six distinct locations (Kiara, Sheikh, Nimrod, Tal Afar, Zimara, Rabia). In Mosul, soil and water samples were taken on January 2, 2023, April 2, 2023, July 2, 2023, and October 2, 2023, at specific locations. The soil's heavy metal concentrations were as follows: The results showed that nickel was more abundant in the soil than other elements (Ni>Cu>Fe>Pb>Cr>Zn>Cd), while cadmium was least abundant. However, the amounts of heavy metals in the water were as follows, and the concentrations in the soil were below the WHO's allowed limits. >Cr>Fe >Pb >Cd>Cu, Ni>Zn All of the heavy metal concentrations were below the allowable level for irrigation, and the mechanical analysis's findings demonstrated that the sand separator outperforms the other soil separators. According to the findings of the current investigation, oil leaks from wells have contaminated the soil and water in the Mosul Governorate near the Ain Zala fields with heavy metals.