Abstract | Keywords | Fulltext | Export | TOC

Abstract:The present study was conducted to demonstrate the effect of organic matter on characteristics ofthe Euphrates river at the center of Al-Nasiriyah city and its feasibility for domestic, industrial andagricultural uses. [This index is an efficient and successful method for descriptive and quantitativeassessment of organic pollution in different aquatic systems]. Four stations were selected, the first stationnear Al-Sharif, the second station near the thermal of electric power, the third station near the ZaytoonBridge at the city center and the fourth station near the waste water treatment station, the samples werecollected from water monthly starting October 2017 Until September 2018. Some physical and chemicalproperties were measured: Biological oxygen demand (BOD5), Nitrate (NO3), phosphate (PO4),Ammonium (NH4). The results of variables of water in the studied stations showed that the values ofBiological Oxygen Demand ranged between (1.3-24.6) mg/L, nitrates between (9.24-61.98) mg /L,phosphate recorded values ranged between (0.10 – 1.30) mg /L, and ammonium (0.10 – 1.4) mg /L.

Keywords: Euphrates River --- Water Quality --- Organic Pollution Index --- OPI.