Hasan Izanloo; Seyyed Mostafa Khezri; Gharib Majidi; Aliasghar Al Sheykh; Hamidreza Tashauoei; Mohammad Khazaee; Behnam Vakili; Vahid Vaziri rad; Hossein Aghababaee; Shahnaz Arsang Jang
Volume 21, Issue 6 , January and February 2015, , Pages 1194-1204
Abstract
Background: The purpose of this study was surveying the trends of nitrate variations in drinking water of rural areas of Qom province and its mapping using GIS software.
Materials and Methods: This study was of descriptive cross-sectional type. The collected data related to nitrate concentrations during ...
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Background: The purpose of this study was surveying the trends of nitrate variations in drinking water of rural areas of Qom province and its mapping using GIS software.
Materials and Methods: This study was of descriptive cross-sectional type. The collected data related to nitrate concentrations during years 2006-2011 were acquired from Qom Province Rural Water and Wastewater Company. During the year 2012, 73 wells were tested via two sampling runs; one sampling set performed in wet season and the other one carried out in the dry season. Nitrate concentrations were determined spectrophotometric ally. The Chi-squared test and segmented regression model were used for data analysis. Four software’s, namely, Excel-2007, SPSS-16 and Joinpoint-4.1, were used for data mapping and analysis.
Results: The average nitrate concentration during 2006-2012 period was 23.12 mg/L with the standard deviation of 18.68 mg/L. 7.5% and 4.9% of the surveyed wells were “at risk” and “contaminated”, respectively. Regression results indicated a lack of sufficient statistical evidence to accept an increasing trend of nitrate during the study period (P value=0.85). There was no significant difference in the contamination averages between the results of two sample sets which were taken during each year. During the beginning of 2006 to the beginning of 2013, an increasing trend of nitrate concentration was observed in the contaminated wells.
Conclusion: In the majority of monitored wells, the nitrate concentration was in the standard range. In the “at risk” wells and also in the others, the concentrations were beyond the standard levels. Therefore, Management approaches should be applied to avoid the nitrate penetration into the aquifers.
Mehdi Asadi; Morteza Safdari; Narges Paydari Shayesteh
Volume 20, Issue 1 , March and April 2013, , Pages 117-121
Abstract
This is a descriptive-analytic study which was carried out on 45 samples of influent water to dialysis machines in hospitals of Qom.Then results comparised with related standards.The results showed that means of anions in this study were below AAMI and EPH standards. It should also be mentioned that ...
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This is a descriptive-analytic study which was carried out on 45 samples of influent water to dialysis machines in hospitals of Qom.Then results comparised with related standards.The results showed that means of anions in this study were below AAMI and EPH standards. It should also be mentioned that in few samples, these amounts were above the standard levels. Then it should be analysed influent water to dialysis machine continually.