Smart Energy and Sustainable Environment , ISSN 2668-957X
2020, Volume 23, Issue 1
Pages 35-46

Hydrochemical characterization and quality of surface water from Olt river, Romania

Claudia Sandru * , Mihaela Iordache , Andreea Maria Radulescu , Ramona Ionela Zgavarogea , Roxana Elena Ionete

National Research and Development Institute for Cryogenics and Isotopic Technologies - ICSI Rm. Valcea, Uzinei Street no. 4, PO Box Râureni 7, 240050, Râmnicu Vâlcea, Romania

*Corresponding author: Claudia Sandru, e-mail:

Received 03 February 2020, Received in revised form 20 February 2020, Accepted 27 February 2020, Available online 06 March 2020


Hydrochemical investigations of the surface water and the seasonal effect on the chemical budget of ions from the Olt river were carried out. Geochemical results show that the seasonal effect does not change the order of ion abundance. The Piper diagram was used for the classification of cations and anions, in terms of confidence in the major percentages of ions and types of water. According to the Piper diagram, the dominant hydrochemical facies in the study area is Ca–Na–HCO3–Cl, which represents 87% of the samples. The study area is influenced by natural processes of water–rock interaction such as dissolution of evaporitic rocks (gypsum, anhydrite, and halite).


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  • Keywords

    Geochemistry, water quality, surface water

    Tag search Geochemistry water quality surface water