International Journal of Marine Science, 2017, Vol.7, No.6, 51-58
57
Table 3 Seasonal variation of TOC% and Grain size in West Qurna-2 oil field
Station
TOC%
Grain size
Summer
Autumn
Winter
Spring
Clay%
Silt%
Sand%
Clay%
1
0.256
0.558
1.116
1.118
2
70
28
2
2
0.358
0.651
1.162
1.162
1
41
58
1
3
0.461
1.023
1.441
1.213
3
68
29
3
4
0.666
1.038
1.581
1.415
1
47
52
1
5
0.923
1.829
1.813
1.668
1
76
23
1
6
0.82
1.162
1.674
1.649
2
32
66
2
7
0.974
1.953
1.891
1.668
1
42
57
1
8
1.025
2.046
2.000
1.800
1
56
43
1
9
1.179
2.093
2.418
1.876
1
39
60
1
10
1.282
2.511
2.511
2.445
2
73
25
2
Table 4 Comparison between the levels of total hydrocarbons (µg/g dry weight) in soil for the present study with the other previously
studies
Studied Areas
Total Hydrocarbons(µg/g)
References
Shatt Al-Arab River &NW Arabian Gulf
2.46 -38.33
Al-Saad (1995)
Shatt Al-Arab River &NW Arabian Gulf
0.108 – 37.02
Al-Khatib (1998)
Al-Howaiza Marsh
4.057- 47.335
Al-Khatib (2008)
Al-Hammar Marsh
0.458-1.250
Talal (2008)
Shatt Al-Arab River ,Northern
7.37-24.41
Al-Imarah
et al
. (2010)
Iraqi Coast Region
2.39- 30.88
Al-Khion (2012)
Shatt Al-Arab River
4.76 – 45.24
Al-Hejuje (2014)
Shatt Al-Arab River
0.94-26.27
Al–Mahana (2015)
West Qurna-2 Oil field
14.82- 41.86
The present work
3 Conclusions
The highest concentrations of TPHs were recorded at Location 10, while the lowest at Location 1.The highest
seasonal mean concentrations of TPHs were recorded during Winter season, while the lowest during Summer
season except some locations.
Authors’ contributions
Conceived and designed the experiments: AL-Saad H.T., Karem D.S., and Kadhim H.A. Analysed the data: Karem D.S. Wrote the first
draft of the manuscript: AL-Saad H.T., Karem D.S. Contributed to the writing of the manuscript: Kadhim H.A. Agree with manuscript
results and conclusions: AL-Saad H.T., Karem D.S., and Kadhim H.A. Jointly developed the structure and arguments for the paper:
AL-Saad H.T., and Karem D.S. Made critical revisions and approved final version: AL-Saad H.T., Karem D.S., and Kadhim H.A.All
authors reviewed and approved of the final manuscript.
Acknowledgments
The researchers wish to acknowledge the Marine Science Center (University of Basra) for providing laboratory facilities.
References
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Ph.D. Thesis, Biology Department, College of Science, University of Basrah, pp.239
Al-Imarah F.J.M., Ali S.A., and Ali A.A., 2010, Temporal and spatial variations of petroleum hydrocarbons in water and sediments from Northern parts of Shatt
Al-Arab River, Iraq, Mesopotamian Journal of Marine Science, 25(1): 65-74
Al-Khatib F.M.H., 1998, Distribution of hydrocarbons compound and their sources in sediment cores from Shatt Al-Arab Estuary and N.W. Arabian Gulf. M.Sc.
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Al-Khatib F.M.H., 2008, Determination the concentration, origin and distribution of hydrocarbons compounds in water, sediments and some biota of Hor
Al-Howaiza, south of Iraq and their sources, Ph.D., thesis, College of Science, University of Basrah, pp.228
Al-Khion D.D., 2012, Distribution of polycyclic nuclear compounds in Iraqi coast regions, Ph.D, thesis, College of Agriculture, University of Basrah, pp.171
