Assessment of environmental pollution with some heavy elements in the soils of some areas of Tikrit city, Iraq. | ||
| Kirkuk University Journal For Agricultural Sciences | ||
| Article 12, Volume 12, Issue 2, Spring 2021, Page 120-133 PDF (944 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.58928/ku21.12212 | ||
| Author | ||
| Mohammed MAzeez Namuq | ||
| Tikrit Education Department, Salah al-Din Education Directorate,Iraq. | ||
| Abstract | ||
| Pollution is one of the most important problems that humans confronts at the present time, and the problem of soil pollution is the most serious because of its relationship to human health and other organisms. The areas for soil sample collection in Tikrit were selected based on several factors, including traffic movement, industrial and urban activities, and population density. Soil samples were taken at a depth ranging from 0-15 cm from below the surface of the soil and old leaves of the Ziziphus plant for each site to estimate some heavy elements, including lead Pb , cadmium Cd, copper Cu and zinc Zn, starting from September 2019 to April 2020. The Ziziphus plant was chosen in the current study because it is one of the most common plants found near streets of Tikrit, as it is one of the evergreen trees. The soil of the industrial district site recorded its highest rate of lead (92.25) parts per million and its lowest rate (26.25) parts per million in the soil of district Al Zuhur site. Also, cadmium recorded a high rate in the soil of the industrial district site, reaching (1.12) parts per million and the lowest rate (0.07) parts per million in the district Al Zuhur site. As for copper and zinc, they recorded natural rates, reaching their highest rates (3.03 and 11.07) parts per million, respectively, in the soil of the industrial district site. As for the Ziziphus plants, lead and cadmium recorded their highest rates in the industrial district site (2.78, 0.56) parts per million, respectively, and their lowest rates (1.22 , 0.04), respectively, in Al-Zuhur district site. This showed that the increase in the concentrations of these heavy elements In the soil, it increased its absorption from the soil and thus increased its concentrations in the leaves of the Ziziphus plant. This study also showed that all of its sites are clean and free of contamination according to the estimation of the Anthropogenic Factor (AF) for each element and Pollution Index (PI) for all study sites. | ||
| Keywords | ||
| soil pollution; Ziziphus; heavy elements; cadmium; Pollution Index | ||
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