Abstract
The physico-chemical status of twelve surface water samples from the Birjand flood plain of eastern Iran during the November 2010 were assessed. The sampling points were selected on the basis of their importance. The physico-chemical parameter like, pH, temperature (T), electrical conductivity (EC), total dissolved solids (TDS), total hardness (TH), calcium (Ca2+), magnesium (Mg2+ ), sodium (Na+), potassium (K+), chloride (Cl-), sulphate (SO42-), phosphate (PO43-), bicarbonate (HCO3–), carbonate (CO32–), nitrite (NO2–), nitrate (NO3–), dissolved oxygen (DO), biological oxygen demand (BOD5), and chemical oxygen demand (COD) of surface water were determined. Results showed that the quality of surface water not suitable for drinking, with references to the concentrations of EC, TDS, TH, Na+, HCO3-, and BOD5 which are more than the prescribed limits, in most sites. Results also indicated that there were correlations among the measured parameters.
Full text article
Authors
Copyright (c) 2013 Borhan Mansouri, Javad Salehi, Behrooz Etebari, Hamid Kardanmoghadam

This work is licensed under a Creative Commons Attribution 4.0 International License.
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License [CC BY-NC-SA 4.0] that allows others to share the work with an acknowledgment of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work, with an acknowledgment of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online.