Volume 13, Issue 3 (10-2017)                   HSR 2017, 13(3): 334-339 | Back to browse issues page

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Gorji L, Ghazifard A, Entezari M, Tabatabaei J. The Zoning of Nitrate Concentrations in Meymeh Aquifer, Iran, Using Geographic Information System. HSR 2017; 13 (3) :334-339
URL: http://hsr.mui.ac.ir/article-1-955-en.html
1- PhD Candidate, Department of Natural Geography, School of Geography, Research Institute of Shakhes Pajouh, Isfahan, Iran
2- Associate Professor, Department of Geology, School of Science, University of Isfahan, Isfahan, Iran
3- Associate Professor, Department of Natural Geography, School of Geography and Planning, University of Isfahan, Isfahan, Iran
4- Assistant Professor, Department of Petroleum Engineering, Meymeh Branch, Islamic Azad University, Meymeh, Iran
Abstract:   (835 Views)
Background: The increased rate of nitrite and nitrate in groundwater resources has caused many concerns in agricultural and industrial areas. Nitrate, one of the indicators of chemical water pollution, has always attracted much attention. The objective of this study was to determine the amount of nitrate in Meymeh aquifer in Isfahan Province, Iran.Methods: In order to determine the amount of nitrate, samples were taken from 10 wells based on sampling standards and were transferred to a water laboratory for analysis. Spectrophotometric method was performed to measure the amount of nitrate. Then, the zoning of nitrate changes was drawn using ArcGIS software and interpolation models.Findings: Electrical conductivity (EC) of the selected wells was 823-4170 µs/cm and the average nitrate concentration was 30.64 ± 19.77 ppm. The minimum and maximum nitrate concentration, respectively, were 8.51 and 59.43 ppm. In 68% of analyzed samples, the standard deviation was about 19.77, which indicates the close distribution of obtained data to average concentration of results.Conclusion: EC of water samples increased from high elevations in the Northeast and West toward the feeding areas in the Central Plains. The highest concentration of nitrate was related to the southern aquifer that most likely is due to high groundwater levels and farming activities in the region. Although the average nitrate concentrations in most of the samples was less than 50 ppm, it is still vital to protect groundwater resources from pollutants.
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Type of Study: Research | Subject: education health and promotion
Received: 2020/07/16 | Accepted: 2017/10/15 | Published: 2017/10/15

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