Evaluation of the organic-pollution based on the determination of some polycyclic aromatic hydrocarbons (PAHs)‎ in Tigris River Water in 2012 at Baghdad City, Iraq

الملخص EN

This study aims to predict the organic pollution produced from the presence of some polycyclic aromatic hydrocarbons (PAHs) and determination it's concentrations (μg/L , ppb) in Tigris river water by a collection twenty-seven water samples from a selected three stations with nine sampling sites and three depths of water (5 cm , 2 m and 4 m) each site for 4.6 km distance of a geographic studied area which is located between the ( Al-Senak and AL-Sarrafiah bridges ) at Baghdad city – Iraq on May, 2012.

The geographic location was determined with a Global Positioning System (GPS) and Geographic Information System (GIS) software program.

The concentrations of fourteen components (PAHs) were performed using the reverse phase of high performance liquid chromatography (RP-HPLC) technique.

Samples were chemically treated using liquid-liquid extraction method , filtered , extracted , dried , evaporated and pre-concentrated in order to be ready for analysis .

The determined concentrations of (PAHs) for the studied area did exceed the criteria values proposed by the International Environmental Organizations like American Environment Protection Agency (U.S-EPA) and British Health Agency (BHA) .

The results were showed that the maximum values of the total concentrations (PAHs) were found to be 228 μg/L (5 cm depth , site F, Medicine city station , Al-Resafa bank) , 192.1 μg/L (2 m depth , site D , Medicine city station , Al-Karkh bank) and 80.1 μg/L (4 m depth , site D , Medicine city station , Al-Karkh bank) , while the minimum values were found to be be 51.2 μg/L (5 cm depth , site I, Al-Sarrafia bridge station , Al-Resafa bank) , 33.4 μg/L (2 m depth , site G , Al-Sarrafia bridge station , Al-Karkh bank) and 4.8 μg/L (4 m depth , site G , Al-Sarrafia bridge station , Al-Karkh bank)