Document Type : Original Article
Authors
1
Ph.D. Student, Department of Geology, Faculty of Earth Science, Shahid Chamran University of Ahvaz Khuzestan Power and Water Authority, Ahvaz,Iran
2
Khuzestan Power and Water Authority, Ahvaz,Iran
3
Professor, Department of Geology, Faculty of Earth Science, Shahid Chamran University of Ahvaz, Iran
4
Faculty of Earth Sciences, University of Shahid Beheshti, Tehran, Iran
5
Assistant Professor, Department of Environmental Engineering, North Tehran Branch, Islamic Azad University, Iran
6
Kohgiloueh and Boyer Ahmad Regional Water Company, Yasooj, Iran
10.22125/iwe.2025.500969.1850
Abstract
In many arid and semi-arid areas, due to lack of surface water or pollution, rainfall deficiency, and intense evaporation as a result of climatic conditions, this precious resource is limited. The defect of this vital resource resulted in groundwater being exploited for different purposes in such areas. However the quality of groundwater is subjected to contamination due to human activities such as domestic wastewater, industry, manure, and fertilizer. Therefore, pollution source detection as a significant subject is necessary. This investigation aimed to evaluate nitrate pollution in shallow wells in the southern part of the Behbehan aquifer using hydrochemical and stable isotopes. To achieve the goal, 56 samples ( 8 surface water, 3 drain water, and 45 groundwater) were collected for major, minor elements and stable isotope analysis.. The collected data was interpreted by SPSS and XLSTAT statistical software. The data indicated that the nitrate concentration varies between 3 to 103 mg/l and δD and δ18O ranges between -17.5 to -3.5 and -5 to 1.75 respectively. Nitrate ion concentration variation and well depth revealed that around Behbehan City and surrounding villages where well depth is below 30 m, the nitrate concentration was between 40 to 103 mg/l, indicating anthropogenic activities including domestic wastewater and manure controlling increasing nitrate concentration.
Keywords
Subjects
