Abstract
The difference between the seasons of the year and the fall of rain has a significant impact on the degree of pollution of hydrocarbons in the water of rivers in the area falling on them, to study the degree of hydrocarbon pollution in Al-Gharaf river in Thi-Qar province, the Samples were collected from water, sediments, Phragmites australis and Ceratophyllin demersum from this river that passing through Al-Fajr, Qal’at Sukkar and Al-Rifa’I cities in October 2018 and January 2019. The results showed that the concentration of TPH were increasing in January (after rainfall); as well as according to the order of the areas mention above the amount of increase in TPH In the water (17.7, 22.3, 18.9) μg / L, while in the sediments (647, 904, 626) μg/g D.W, however in Phragmites australis (2.00, 2.00, 3.19) μg/g D.W and Ceratophyllin demersum plant has reached an increase (1.88, 4.83, 5.2) μg/g D.W
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