Hydro-Geochemistry of Qare-Sou Catchment and Gorgan Gulf, Iran: Examining Spatial and Temporal Distribution of Major Ions and Determining the River’s Hydro-Chemical Type

Authors: Milad Kurdi, Hadi Farhadian, Teymour Eslamkish

Abstract:

This study examined the hydro-geochemistry of Qare-Sou catchment and Gorgan Gulf in order to determine the spatial distribution of major ions. In this regard, six hydrometer stations in the catchment and four stations in Gorgan Gulf were chosen and the samples were collected. Results of spatial and temporal distribution of major ions have shown similar variation trends for calcium, magnesium, and bicarbonate ions. Also, the spatial trend of chloride, sulfate, sodium and potassium ions were same as Electrical Conductivity (EC) and Total Dissolved Solid (TDS). In Nahar Khoran station, the concentrations of ions were more than other stations which may be related to human activities and the role of geology. The Siah Ab station’s ions showed high concentration which is may be related to the station’s close proximity to Gorgan Gulf and the return of water to Qare-Sou River. In order to determine the interaction of water and rock, the Gibbs diagram was used and the results showed that water of the river falls in the rock range and it is affected more by weathering and reaction between water and stone and less by evaporation and crystallization. Assessment of the quality of river water by using graphic methods indicated that the type of water in this area is Ca-HCO₃-Mg. Major ions concentration in Qare-Sou in the universal average was more than but not more than the allowed limit by the World Health Organization and China Standard Organization. A comparison of ions concentration in Gorgan Gulf, seas and oceans showed that the pH in Gorgan Gulf was more than the other seas but in Gorgan Gulf the concentration of anion and cation was less than other seas.

Keywords: Hydro-geochemistry, Qare-Sou River, Gorgan Gulf, major ions, Gibbs diagram, water quality, graphical methods.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1127635

References:

[1] Maleki Nezhad, H., & Arekhi, J. (2011). Investigation of chemical changes in water quality parameters in ziarat river. Fourth Conference on Water Resources Management. tehran: Amirkabir University (in Persian).
[2] Kurdi, M., Eslamkish, T., Seyedali, M., & Ferdows, M. S. (2015). Water quality evaluation and trend analysis in the Qareh Sou Basin, Iran. Environmental Earth Sciences, 73(12), 8167-8175.
[3] Wang, X. L., Lu, Y. L., Han, J. Y., He, G. Z., & Wang, T. Y. (2007). Identification of anthropogenic influences on water quality of rivers in Taihu watershed. Journal of Environmental Sciences, 19(4), 475-481.
[4] Ensafi moghadam, T. (2007). Drought indices for climate assessment in the basin of Lake Mac. Desert Research, V.14 (in Persian).
[5] Kashefi asl, M., Zaeim dar, M. (2009). Quality managment in Jajrood River. Environmental Science and Technology, Volume XI, Number 2 (in Persian).
[6] Sharifi, N., Khoshbavar, S., Ghorbani, H., Kazemian, R., Abbasi, H. (2011). Bioaccumulation of heavy metal cadmium in sediments and macrobenthos one year river Ghareh sou, Journal of Fisheries, Department Azadshahr,5(4), 1-16 (in persian).
[7] Hanafi, M. (1997). Determination of heavy metals in water of qare- sou river. tehran: Environmental pollution and conservation of sea ¬ Payanamh Expert Group. School of Marine Science and Technology. Islamic Azad University, North Tehran.
[8] Kurdi, M., Tabasi, S., Eslamkish, T., & Hezarkhani, A. (2013). Hydro-geochemical study to evaluate the suitability of water for irrigation purpose at Qareh sou catchment, North of Iran. Elixir Geosci, 62, 17536-17541.
[9] Jahanshahi, M. (2000). reported the design of soil and water, self-purification of qare-sou river. gorgan: environment agency (in Persian).
[10] Kurdi, M., Hezarkhani, A., & Eslamkish, T. (2014). Assessment of chemical properties and hydro-geochemical coefficients at the Qareh Sou Basin, Golestan Province, Iran. Environmental earth sciences, 72(9), 3243-3249.
[11] Grieve, C. M., Poss, J. A., & Amrhein, C. (2006). Response of Matthiola incana to irrigation with saline wastewaters. HortScience, 41(1), 119-123.
[12] Safa, M., Soltani-Mohammadi, S., & Kurdi, M. (2016). Optimal design of additional sampling pattern for drinking-water quality control. Environment, Development and Sustainability, 1-14.
[13] Chen, J., Wang, F., Xia, X., & Zhang, L. (2002). Major element chemistry of the Changjiang (Yangtze River). Chemical Geology, 187(3), 231-255.
[14] Stallard, R. E. (1981). Geochemistry of the Amazon 1. Precipitation chemistry and the marine contribution to the dissolved load at the time of peak discharge. J. Geophys. Res, 9844-9858.
[15] Gibbs, R. (1970). Mechanisms controlling world water chemistry. Science 170, 1088-1090.
[16] Meybeck, M., & Helmer, R. (1989). The quality of rivers: from pristine stage to global pollution. Palaeogeography, Palaeoclimatology, Palaeoecology, 75(4), 283-309.
[17] Hounslow, A. W. (1995). Water quality data: Analysis and interpretation. Lewis publishers, 89-96.
[18] Arvidson, J. D. (2006). Relationship of Forest Thinning and Selected Water Quality Parameters in the Santa Fe Municipal Watershed, New Mexico (Doctoral dissertation, The University of New Mexico).
[19] Sadashivaiah, C., Ramakrishnaiah, C. R., & Ranganna, G. (2008). Hydrochemical analysis and evaluation of groundwater quality in Tumkur taluk, Karnataka state, India. International Journal of Environmental Research and Public Health, 5(3), 158-164.
[20] El-Manharawy, S., & Hafez, A. (2004). Could seawater be under saturation and acidic? Desalination, 165, 43-69.
[21] Levinson, A. A. (1974). Introduction to exploration geochemistry. (Textbook).
[22] Nordstrom D.K., Plummer L.N., Wigley T.M., Wolery T.J., Ball J.W., Jerme E.A., Bassett R.L., D.A. Crerar, T.M. Florence, B. Fritz, M. Hoffman, G.R. Holdren, G.M. Lafon, S.V. Mattigod, R.E. Mcduff, F. Morel, M. Reddy, G. Sposito and J. Thrailldll. (1979). A comparison of computerized chemical models for equilibrium calculations in aqueous systems: in: Chemical Modeling in Aqueous Systerns, Speeiation, Sorption, Solubility, and Kinetics, EA Jerme, Ed. American Chemical Society, vol. 93, 857 to 892.
[23] World Health Organization. (2006). the world health report: 2006: working together for health.