Joud Mahnaya ^(1)*, Nada Altonji ⁽¹⁾, Muhammad Manhal Alzoubi1⁽²⁾ , and Abdulghani Alkhaldi ⁽³⁾

(1). College of Technical Engineering, University of Aleppo, Aleppo, Syria.

(2). General Commission for Scientific Agricultural Research, Damascus, Syria.

(3). General Commission for Scientific Agricultural Research, Aleppo, Syria.

(*Corresponding Author: Joud Mahnaya. E-mail: joud.mhanaya@gmail.com).

Received: 10/06/2021                          Accepted: 9/02/2022

Abstract: 

Soil pollution is considered one of the most important current risks due to the transmission of pollution to plants and crops, especially its contamination with heavy metals due to its cumulative effect and lack of decomposition. Especially in agricultural soils that are irrigated with untreated sewage water, after a water treatment plant was sabotaged. Sewage in Aleppo These areas have become irrigated by that water. The aim of this research is to study the extent of the pollution of agricultural soil with some heavy metals (lead, Pb, cadmium, Cd, nickel, Ni, chromium, Cr) in the side of the wastewater treatment plant water stream. Soil samples were collected near the destroyed treatment plant in the city of Aleppo, towards the village of Al-Wadhihi, and from 20 sites, at two depths of (0-25 cm) and (25-50 cm) in  both summer and winter seasons 2020, and chemical and physical analyzes of soil were performed, and Some heavy metals (Cr – Cd – Pb- Ni) were also estimated in the laboratories of the General Commision for Scientific Agricultural Research or the College of Technical Engineering at Aleppo University. The results of the analysis of variance showed that there were significant differences between the studied sites in the concentrations of heavy metals, the concentration of lead (Pb) ranged between (160.4-37.4 ppm) in the summer, and in the winter it ranged between (154.5-28.89 ppm), while the cadmium element Cd was It ranged between (1.09-0.43 ppm) in the summer, and it ranged between (0.555-0.3 ppm) in the winter, the chrome Cr ranged between (226.9-24.3 ppm) in the summer, and in winter it ranged between (142.99-42.84 ppm), element The concentration of nickel in the summer was between (187.5-97.5 ppm), and in the winter (209.5-97.5 ppm), and all the concentrations of these elements were within the permissible limits according to the World Health Organization.

Keywords: Soil pollution, Cd, Pb, Ni, Cr.

Full paper in Arabic: pdf