Document Details
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Document Type |
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Thesis |
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Document Title |
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ASSESSMENT OF THE IMPACT OF HEAVY METALS AND TOXIC ELEMENTS ON SOIL AND WILD AND CULTIVATED PLANTS IN RABIGH GOVERNORATE تقييم تأثير المعادن الثقيلة والعناصر السامة على التربة والنباتات البرية والمنزرعة فى محافظة رابغ |
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Subject |
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Faculty of Meteorology, Environment and Arid Land Agriculture |
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Document Language |
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Arabic |
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Abstract |
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conducted to test and evaluate the impact of pollution with heavy and toxic elements in Rabigh governorate on soil and natural and cultivated plants.
It aims at reaching the degree of pollution in Rabigh governorate and its causes to identify the resulting problems and how to solve them in a scientific way through the inventory of the different sources of pollution in the different types in the region and study the pollution of plants in the province Regarding the safe limits of the various pollutants to reach the development of specifications, standards and solutions to reduce pollution in Rabigh Governorate in line with international laws and standards in order to maintain human, animal, plant, water, soil, air health in the governorate. Three sites were selected for this study, the first one is the village of Kolaya in the north of the province and the city of Mastura and the city of Rabigh in the south. Rabigh Economic City was selected as a prime location for this study due to the presence of many factories and related facilities, solid and liquid waste landfills and industrial and sanitary drainage in the sea. The results of this study resulted in significant variation between the three Rabigh governorate sites with respect to their plant content, well water used for irrigation and soil of major elements (potassium (K), magnesium (Mg), sodium (Na), calcium (Ca), water salinity, and acidity (PH), electrical conductivity (EC), adsorption sodium (SAR), and micro and toxic elements. The concentration of all these traits and elements was lower in plants at all studied sites compared to the standards set by the World Health Organization and Food and Agriculture Organization (WHO/FAO, 2007). Wild plants in the vicinity of Rabigh and Rabigh irrigation water were characterized by high concentrations of large and minor elements compared to the locations of Mastourah and the Kolaya village. Mastourah site came second to Rabigh as regards concentrations of these elements in plants. As for the concentrations of the studied elements and qualities within the different wells, the study showed that it is lower than the standards of the Saudi Ministry of Environment, Water and Agriculture (MEWA, 2005) except for the salinity of the wells which were higher than the standards of the Food and Agriculture Organization (FAO, 1985). The (pH) value inside wells water is between 7-8 at all sites which means that the property of wells water in Rabigh governorate is not acidic but basic to less extent. The electrical conductivity (EC) level of wells water was higher than that of FAO and MEWA, and the concentration of chromium in wells water was higher than that of FAO (1985) and MEWA (2005). For soils, the concentration of all the studied elements and traits was lower in the soil of all sites studied compared to the standards set by FAO (1985) and the Saudi Ministry of Environment, Water and Agriculture (MEWA, 2018). The highest potassium (K) content in the soil was at the site of the village of Kolaya, while the sodium (Na) concentration was the highest in the soil of the city of Mastourah. The soil of Kolaya site was characterized by the highest content of micro- and toxic elements (iron (Fe) and zinc (Zn) and magnesium (Mn) and copper (Cu) and cadmium (Cd) and nickel (Ni) and lead (Pb) and chromium (Cr) with averages (271,2, 1, 47, 10,67, 1,17, 0,023, 1,55, 4,92, 2,09 mg / l) compared to soil content of the second site (Rabigh) and the third site (Mastourah). The (pH) of the soil value was between 7-8 in all sites, which means that the soil property in the sites of the province of Rabigh is base and not acidic, but its base is light. The location of the city of Rabigh is considered the most contaminated compared to the sites of the city of Mastourah and the Kolaya village, but this pollution has not reached a dangerous stage because its standards are lower than those set by the international and local authorities. The water of wells of these three areas can be used to irrigate crops and vegetable plants according to the standards of the Saudi Ministry of Environment, Water and Agriculture (MEWA, 2018). We recommend monitoring the situation with regard to environmental pollution, especially Rabigh, by conducting periodic analyzes and tests on water sources, soil and plants in the area. |
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Supervisor |
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Prof. Ahmed Abdullah Bakhshwain |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1441 AH
2019 AD |
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Co-Supervisor |
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Prof. Samir Gamil AL-Solaimani |
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Added Date |
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Tuesday, December 3, 2019 |
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Researchers
| أحمد عبد الله القرني | Al-qarni, Ahmad Abdullah | Researcher | Master | |
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