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Distribution and Sources of Fatty Acids in Sediment Samples from Shatt Al-Arab Estuary and Northwest Arabian Gulf  

Al-Timari A.Ak , Al-Saad H.T , Douabul A.A , Salah M , Hantoosh A.A
Dept. of Marine Environmental Chemistry, Marine Science Center-University of Basra, Iraq
Author    Correspondence author
International Journal of Marine Science, 2015, Vol. 5, No. 40   doi: 10.5376/ijms.2015.05.0040
Received: 30 May, 2015    Accepted: 18 Jun., 2015    Published: 19 Jun., 2015
© 2015 BioPublisher Publishing Platform
This is an open access article published under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Preferred citation for this article:

Al-Timari A.Ak., Al-Saad H.T , Douabul A.A., Salah. M., and Hantoosh A.A,.2015, Distribution and sources of fatty acids in sediment samples from Shatt Al-Arab estuary and Northwest Arabian Gulf, International Journal of Marine Science, 5(40): 1-6 (doi: 10.5376/ijms/2015.05.0040)

Abstract

Surface sediments (10 cm) of the subtropical Shatt Al-Arab estuary and Northwest Arabian Gulf were collected to study the fatty acids distribution and sources .Samples were analyzed by gas chromatography. Other relevant parameters were measured including total organic carbon, and grain size. A total of 31 fatty acids were identified from the superficial sediment samples, including polyunsaturated PUFA, monounsaturated (MUFA), and saturated and branched fatty acids. The total FA (TFA) concentrations were in the range 13.32-35.72 µg/g dry weight (dw).Generally, the abundances of the 31 FAs showing strong even/odd numbered predominance, and ranging from C12 to C32 were C14 (1.68-12.45%), C16 (2.92-13.49%), C18 (0.87-12.75), C19 (0.87-3.29%), C24 (0.19-6.99%) and C26 (nd-8.90%), C28(nd-5.91%). These distributions are indicative of input of terrestrial, phytoplanktonic and bacterial lipid residues. The sums of long chain FAs (LCFAs) C24-C32 concentrations of were calculated. High values of terrestrial Organic Matter (OM)were found at Shatt Al-Arab, the values were in the range 4.05-4.46 µg/g (dw), with contribution relative to the TFAs ranging from 12.49-21.99% (mean 17.99%). While low values were found at the North West Arabian Gulf , the values were in the range 0.03-0.09 µg/g (dw), with contribution relative to the TFAs ranging from 0.19-0.68 % (mean 0.36%).

Keywords
Fatty acids; Sediment; Gas Chromatography; Shatt Al-Arab; NW Arabian Gulf
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