Study of Water Quality of Aras River Using Physico-‎Chemical Variables ‎

Document Type : Technical Note (5 pages)

Authors

1 Assistant Professor, Department of Environment, Faculty of Natural Resources and Environment, Malayer University, Iran. Email: e.solgi@malayeru.ac.ir

2 M.Sc. Student of Environment, Faculty of Natural Resources, University of Tehran, Karaj, Iran.

Abstract

Confidence of water quality is of prime ‎importance ‎before its use for drinking, agricultural, industrial or ‎recreational purpose. The assessment of ‎river water ‎quality is an important element in the evaluation of ‎water resources. The present study investigates the ‎water quality of Aras River to provide an overview of ‎the relationship and sources of physicochemical ‎variables. A total of 20 samples were taken in the Aras ‎River at 10 stations that 10 water samples were used ‎for the analysis of heavy metals and 10 water samples ‎for nitrate, nitrite, Na, Ca, K, pH, EC and TDS ‎variables. Atomic Absorption ‎Spectrophotometery, Spectrophotometer, Flame ‎Photometer and pH and EC Meter were used for ‎measuring of water quality variables. The results ‎showed that the mean concentration of nitrate, nitrite, ‎sodium, potassium, calcium, TDS in the Aras River ‎were 297, 0.57, 67.3, 6.4, 57.4, 1014.73 mg/l ‎respectively and for lead and cadmium 0.07, 0.61 µg/l. ‎Also the mean value of electrical conductivity was ‎‎1254.3 µs/cm and the mean value of pH was 8.22. The ‎concentration of nitrate, nitrite and electrical ‎conductivity were higher than the WHO standard and ‎other variables were less than or within the WHO ‎standard. It seems that municipal wastewater and ‎agricultural runoff are important factors affecting ‎water quality. ‎

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Iran-Water Resources Research
Volume 12, Issue 3 - Serial Number 37
December 2016
Pages 207-213

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History

  • Receive Date: 04 March 2016
  • Revise Date: 29 April 2016
  • Accept Date: 30 April 2016

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