Search

Effect of provenance of organic matter evaluated through the distribution of occurrence of triterpanes and steranes in surface sediments from coastal stations located in the Gulf of Suez Gulf. The samples have been studied in four coastal stations located in the Gulf of Suez namely: Al-Nasr Oil Company (NPC), West outlet of SOPC, Inlete of SOPC, and El-Sukhna of Loloha Beach. Saturated hydrocarbons were analyzed by gas chromatography-mass spectrometry, to assessing of organic content and maturity level of the sediments. The results showed that the hydrocarbons are originated mainly from predominance of petrogenic and biogenic hydrocarbons with high maturity level. [ABSTRACT FROM AUTHOR]

The Semi-enclosed Suez Gulf records various signals of high anthropic pressures from surrounding regions and the industrialized Suez countries. The sedimentary hydrocarbons have been studied in 6 coastal stations located in the Gulf of Suez. Non-aromatic hydrocarbons were analyzed by GC/FID and GC/MS to assess organic content in surface sediments of Suez Gulf, Egypt depending on alkanes, terpanes and steranes biological markers indicators. The results showed that the hydrocarbons are originated from multiple terrestrial inputs, biogenic, pyrolytic. Several ratios of hydrocarbons indicated the predominance of petrogenic in combination with biogenic hydrocarbons. Al-Attaqa harbor, Suez oil processing company, Al-Nasr Oil Company, AL-Kabanon and EL-Sukhna of Loloha Beach are the main sources of petroleum contamination. [ABSTRACT FROM AUTHOR]

The aim of this study was to investigate the contamination of surface sediments in Suez Gulf, Egypt, by polycyclic aromatic hydrocarbons (PAHs). Total concentrations of 16 PAHs were ranged from 6.6009 to 1770.3265 ng/g sed. dry wet with an average of 398.617 ng/g sed. dry wet, which is relatively high in comparison with other estuaries around the world. Source identification implied that the PAHs were originated mainly from pyrolytic sources. However, source patterns may be continuously changed to a petrogenic origin due to the heavy ship traffic and continuous discharge of oily sewage in this area. The PAH levels were also compared with international Sediments Quality Guidelines and Sediments Quality Criteria, and the results indicated adverse effects for most individual PAHs. However, toxic effects related to acenaphthylene (A); benzo [b] fluoranthene (Bbf); benzo [K] fluoranthene (Bkf); dibenzo [a,h] anthracene (DahA); and benzo [ghi] perylene (Bp) would occur occasionally in most locations in the Gulf. [ABSTRACT FROM AUTHOR]

Poly-aromatic hydrocarbons (PAHs) were analyzed in sediments collected from the Suez Gulf to evaluate the composition, sources, and ecological risk assessment. The highest concentration of total PAHs is recorded in sediments collected from Inlet of Suez Oil Petroleum Company (SOPC), followed by east of the Outlet of SOPC and Outlet of SOPC. While lower concentrations of total PAHs are detected in Suez Beach west of the Outlet of SOPC, from Inlet of Al-Nasr Petroleum Company (NPC). The ratio of ∑LPAHs/∑HPAHs was <1, revealing their pyrogenic sources. The concentration levels of PAHs in the current study were compared to the effect range low (ERL) and the effect range medium (ERM) values for all investigated stations was below the ERL except for Inlet of SOPC. This finding indicated that PAHs in the surface sediments of the studied area have adverse biological effects, which may cause severe adverse biological and acute effects. The high levels of BaP equivalent (BaPE) values east of the Outlet of SOPC indicate that PAHs have relatively high toxicity among all sites. The toxic equivalent (TEQcarc) values of the sediment samples varied from 0.1883 to 1449.286 ng/g TEQ, with the mean value of 144.295 ng/g TEQ; the higher total TEQcarc values were found at 50 m east of the Outlet of SOPC: 1449.286 ng/g TEQ. [ABSTRACT FROM PUBLISHER]

The present work aims to using the application of GC, GC/MS, UV, and FT/IR spectroscopy organic matters extracted from sedimentary hydrocarbons from six coastal stations located in the Gulf of Suez and proposed to evaluate hydrocarbons in the sediments. The results the origins of hydrocarbons are multiple sources from terrestrial inputs, biogenic, and pyrolytic. Abundance of vascular plantnC23–nC33alkanes with a high odd-to-even predominance, pristane, and phytane besidenC29/nC17ratios and the presence of biogenic hopanes indicate the predominance of biogenic in combination with petrogenic hydrocarbons. FT-IR spectroscopic analysis indicates high concentrations of aliphatic hydrocarbons as well as mono- and polynuclear aromatic hydrocarbons are useful tool in organic geochemistry studies. UV analysis for organic matters incorporated in sediments reveals that oil pollutants have considerable amounts of aromatic compounds. [ABSTRACT FROM PUBLISHER]

The semienclosed Suez Gulf records various signals of high anthropic pressures from surrounding regions and the industrialized Suez countries. The sedimentary hydrocarbons have been studied in six coastal stations located in the Gulf of Suez. Nonaromatic hydrocarbons were analyzed by GC/FID and GC/MS to assess organic content in surface sediments of Suez Gulf, Egypt, depending on alkane, terpane, and sterane biological marker indicators. The results showed that the hydrocarbons are originated frommultiple terrestrial inputs, biogenic and pyrolytic. Several ratios hydrocarbons indicated the predominance of petrogenic in combination with biogenic hydrocarbons. [ABSTRACT FROM AUTHOR]

Twenty-two ditch samples were collected from GH-376-1 well, representing the Miocene and Paleozeoic rocks of GH-376 oilfield in the South Gulf of Suez. These were subjected to TOC, S2, Tmax, HI, and OI, and gas chromatography analyses. The results showed that Kareem Formation source rocks are immature and have fair to good potential of type III/II of kerogen for generating mixed gas and oil, but mainly gas. The organic matters are derived mainly from marine contribution from algae and bacteria deposited under reducing environments. Rudies Formation is immature and has poor to fair potential of type II/III kerogen for generating gas. The organic matter is derived mainly from marine and terrestrial sources deposited under oxidizing-reducing environments. Sudr Formation has poor to fair potential of type III kerogen to generate gas. The organic matter has been derived mainly from terrestrial sources deposited under oxidizing conditions. Matulla Formation is immature and has good to very good potential for generating mixed oil and gas. The organic matter has originated mainly from mixed organic sources deposited under oxidizing condition. Nubia Formation has poor generating potential of type II/III kerogen for generating gas. The organic matter was derived from mixed sources deposited under an oxidizing environment. [ABSTRACT FROM AUTHOR]