Effect of some heavy elements resulting from the waste of the Oasis Oil Company on some chemical properties of the soil in Al-Ahrar district in Wasit Governorate

Abstract

      A field study was conducted to determine the impact of pollutants and oil waste resulting from the Al-Waha oil field (Al-Ahrar District) and the impact of these pollutants on areas near the field (study areas). Soil samples were collected from four locations, three of which were southeast of the field, 500 meters away from the field and denoted P1, 1,000 meters away, denoted P2, and 1,500 meters away, denoted P3. The fourth sample, the control sample, was from an area far from pollutants, which is Al-Hassan Al-Askari area in Kut, symbolized by P0. Samples were taken on (11/11/2022) from a depth of 0-15 cm. After determining the soil texture for each area, its chemical characteristics were studied and some heavy elements (lead and cadmium) were estimated. The amount of pollution resulting from the oil field and its effect on these characteristics was noted through the results obtained, as it was observed that the electrical conductivity values increased from 15.7 decimeters m - 1 at P0 to 78.9 decisiemens m-1 at P3 and an increase in the concentration of positive and negative ions, as the sodium concentration increased from 45 mmol L-1 at P0 to 511 mmol L-1 at P3. Likewise, the concentration of lead increased from 33 ppm at P0 to 427 ppm at P1, and cadmium increased from 0.96 ppm at P0 to 23.59 ppm at P1.