Journal mondial de la biologie, de l'agriculture et des sciences de la santé

Abstrait

POLYCYCLIC AROMATIC HYDROCARBONS(PAHs) IN SEDIMENT OF Al- KAHLAA RIVER IN MISSAN PROVINCE/IRAQ

Salih, H. jazza ; Abdul -Hussain,Y. Al -Adhub and Hamid, T. Al - Saad

The present study was performed to have knowledge of Polycyclic Aromatic Hydrocarbons pollution status in sediments along Al–Kahlaa river in Missan province .The samples were collected during two seasons (winter and summer 2012 ,2013)from four different stations)Al -Magideh, Treatment unit, Al-Husaichi and Al-Zubair),in addition to reference station lies on the Tigris river before 25 Km from entering to Missan city. The concentrations of Polycyclic Aromatic Hydrocarbons(PAHs) were determined using capillary Gas –Chromatography. Results of this study revealed that the total concentrations of PAHsin sediments ranged from 4.906 ng/g dry weight in Reference station to 35.479 ng/g dry weight in Treatment unit during Winter ,and from 2.391 ng/g dry weight in Reference station to 25.886 ng/g dry weight in Treatment unit during Summer.It had been noticed that there were a predominance of high molecular weight PAHs on low molecular weight in sediment samples ,while BaA/(BaA+Chr) ratio ranged from 0.520 to 0.66 , InP/(InP+BghiP) ratio ranged between 0.681 ,while Fl/Py ratio ranged between0.10 and 8.490 in sediments ,this give an indication of the source of PAHs compounds which were mainly pyrogenic and few of them petrogenic . Keywords: Pollutioin,PAHs, Sediment, Al-Khalaa River,Missan Province.