Sources and Compositional Pattern of Polycyclic Aromatic Hydrocarbons in Water of Tigris River throughout Passing Baghdad Governorate

• Published in: Journal of physics. Conference series 2019-07, Vol.1234 (1), p.12063
• Main Authors: Nashaat, Muhanned R, Al-Azawii, Luma H A, Al-Azzawi, Muhammad N
• Format: Article
• Language: English
• Subjects: Naphthalene; Polycyclic aromatic hydrocarbons; Pyrogenic and Petrogenic; ring PAHs; Spring (season); Summer; Surface water; Tigris River; total PAHs; Water sampling; Winter
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/1234/1/012063

The present study was conducted on the Tigris River in Baghdad Governorate which starting from Al-Muthana bridge to Al-Zaufurania City before it's jointed with Diyalla River. Six Sites were chosen on Tigris River along Baghdad Governorate. Surface water samples were collected bimonthly from January to December 2013 to measuring the concentrations and distributions of polycyclic aromatic hydrocarbons (PAHs) once every two months and predicting their source of the samples of surface water. The lowest of total PAHs value was 0.007 ppm which recorded during October 2013 at Site 3 where as the highest value was 0.279 ppm which recorded during August 2013.The lowest value of 0.0002 ppm was recorded for Fluorene and Fluoranthene while the highest value of 0.2 ppm for Naphthalene was recorded at Site 3.The composition patterns of PAHs in water were determined. The lowest and highest value of 0.0037 and 0.204 ppm was recorded for 2-ring PAHs at site 3 and 6 during summer and winter of 2013, respectively. Whereas the lowest and highest value of 0.001 and 0.095 were recorded for 3-ring PAHs at site 5 and 6 during winter and summer 2013, respectively. On the other hand, the lowest and highest values of 4-ring PAHs were 0.001 and 0.078 which recorded at site 4 and 6, respectively, during summer 2013. The lowest and the highest concentration of 0.0023 and 0.179 were observed for 5-ring PAHs at site 1 during winter and spring 2013, respectively. The highest concentration of 6-ring PAHs was 0.03 ppm which recorded at site 1 in summer 2013 whereas the lowest concentration was 0.0031 ppm which recorded at site 1 and 3 in winter and spring 2013, respectively. According to the values of ratios (Phen/Ant, Flur/Py, LMW-PAHs/HMW-PAHs), the distribution of PAHs in water may have the origin from different source pyrogenic and petrogenic at site 4 and 5 and from pyrogenic and urban air in other sites of the present study.