Nitrate and Nitrite Concentration in the Drinking Water of Some Universities in Iran

Document Type: Short Communication

Authors

Department of Food Hygiene and Aquaculture, Faculty of Veterinary Medicine, Ferdowsi University of Mashhad, Mashhad, Iran.

Abstract

Introduction: Water is vital for life, and its poor quality causes significant adverse effects on the health of individuals and the community. Groundwater is an important source of nitrate, and higher nitrate levels than the standard limits may lead to several health complications, such as hemoglobin metabolism and formation of nitro amino compounds. The present study aimed to determine the concentration of nitrate and nitrite in the drinking water of some universities in Iran. Methods: This descriptive, cross-sectional study was conducted during the 2016-2017 to measure the concentration of nitrate and nitrite in the drinking water of some universities in Iran, including Ferdowsi University of Mashhad, Guilan University, Kerman University, Hamedan University, Chamran University of Ahvaz, Shiraz University, Qom University, Isfahan University, Sabzevar University, and Tehran University. In total, 156 samples were collected, and nitrate and nitrite concentrations were assessed using a HACH DR-5000 spectrophotometer (Germany). Results: The nitrate content in all the samples was below the standard limits. The highest level of nitrate was observed in the drinking water samples collected from Sabzevar University, and the lowest level was observed in the samples obtained from Guilan and Kerman universities. However, nitrite content was not detected in any of the samples. Conclusion: The World Health Organization standards for nitrate and nitrite levels in drinking water are less than 50 and 3 mg/l, respectively. Drinking water with lower levels of nitrate and nitrite than 50 and 3 mg/l is considered to be safe for public use. However, comprehensive studies are required for the monitoring of the chemical quality of water supplies and providing practical applications for the avoidance of the increased levels of these ions.

Keywords


1. Schuddeboom L. Nitrates and nitrites in foodstuffs. Council of Europe Press, Publishing and Documentation Service  1993 ; 92-871.
2. Cemek M,  Akkaya L,  Birdane  YO, Seyrek K, Bulut S, Konuk M. Nitrate and nitrite levels in fruity and natural mineral waters marketed in western Turkey. J Food Compost Anal. 2007; 20(3-4): 236-40.
3. Wakida FT, Lerner DN. Non-agricultural sources of groundwater nitrate: a review and case study. Water Res. 2005; 39(1): 3-16.
4. Suthar S, Bishnoi P, Singh S, Mutiyar PK, Nema AK, Patil NS. Nitrate contamination in groundwater of some rural areas of Rajasthan, India. J Hazard Mater. 2009; 171(1-3): 189-199.
5. Hsu J,  Arcot J, Lee NA. Nitrate and nitrite quantification from cured meat and vegetables and their estimated dietary intake in Australians. Food Chem. 2009; 115(1): 334-9.
6. Mohamadi  H, Yazdanbaksh A, Sheikhmohammadi A, Bonyadinejad G, Alinejad A, Ghanbari G. Investigation of nitrite and nitrate in drinking water of regions under surveillance of ShahidBeheshti University of Medical Sciences in Tehran province, Iran. Journal of Health System Research. 2012; 7(6): 782-9.
7. Farshad AA, Imandel KA. An assessment of groundwater nitrate and nitrite levels in the Industrial sites in the west of Tehran. Journal of School of Public Health and Institute of Public Health Research. 2002; 1(2): 33-44. (Persian)
8. National Health and Medical Research Council. Physical and chemical quality of drinking water. In: Australian Drinking Water Guidelines 6 [Serial on the Internet]. [2015]; Available from: https://www.nhmrc.gov.au/_files_   nhmrc/publications/attachments/eh52_australian_drinking_ water_guidelines_150527.pdf.
9. Latif M, Mousavi SF, Afyuni M, Velayati SA. Investigation of nitrate pollution and sources in groundwater in Mashhad Plain. Journal of Agricultural Sciences and Natural Resources. 2005; 12(2): 21-32. (Persian)
10. Babaei AA, Ahmadi Angali K, Salimi J, Ghaffarizadeh F, Barjasteh Askari F, Maroofi N, et al. Assessment of Chemical quality of Drinking Water Supplies in Rural area of Neyshabour City in 2014.  Journal of Torbat Heydariyeh University of Medical Sciences. 2015; 2(4): 53-8. (Persian)
11. Badeenezhad  A, Gholami M, Jonidi Jafari A, Ameri A. Factors Affecting nitrate Concentrations in Shiraz Groundwater Using Geographical Information System (GIS). Tolooe Behdasht. 2012; 11(2): 47-56. (Persian)
12. Fallah S, Ghobadinia M, Shokrgozar Darabi M, Ghorbani Dashtaki S. A study on sustainability of groundwater resources of DarabPlain, Iran. Iranian Journal of Water Research in Agriculture. 2012; 26(2): 161-72. (Persian)
13. Asadi M, Arast Y, Behnamipour S, Norouzi M, Mohebi S, Omidi Oskouei AR, et al. Chemical Quality of Water Entrance to Dialysis Machines and Its Comparison with AAMI andEPH Standards in Hospitals of Qom Province, Qom, Iran. Qom University of Medical Sciences Journal. 2012; 6(3): 22-6. (Persian)
14. Malakootian M,  Momeni J. Quality survey of drinking water in Bardsir, Iran 2009-2010. Journal of Rafsanjan University of Medical Sciences. 2012; 11(4): 403-10. (Persian)
15. Naseri H, Raghimi M, Yakhkeshi ME, Dehghan H, Shah Pasandzadeh M. Investigation Of The Effective Factors In The Spatial Variations Of Nitrate Concentration In The Groundwater Of Ghreso Watershed Basin, Golestan Province. Journal of agricultural sciences and natural resources. 2006; 13(1): 108-16. (Persian)