Identification of dicyclic and tricyclic hydrocarbons in the saturate fraction of a crude oil by gas chromatography/mass spectrometry

1982 ◽  
Vol 54 (4) ◽  
pp. 765-768 ◽  
Author(s):  
J. Stuart. Richardson ◽  
Denis E. Miiller
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

scholarly journals Membrane Assisted Simultaneous Extraction and Derivatization with Triphenylphosphine of Elemental Sulfur in Arabian Crude Samples by Gas Chromatography/Mass Spectrometry

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Ibrahim Al-Zahrani ◽  
Munzir H. Aneel Mohammed ◽  
Chanbasha Basheer ◽  
Mohammad Nahid Siddiqui ◽  
Abdulrahman Al-Arfaj
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Hollow Fiber ◽  
Elemental Sulfur ◽  
Hollow Fiber Membrane ◽  
Gas Chromatography Mass Spectrometry ◽  
Fiber Membrane ◽  
Simultaneous Extraction ◽  
Chromatography Mass Spectrometry

Determination of trace level elemental sulfur from crude oil samples is a tedious task. Recently, several gas chromatographic methods were reported in which selective triphenylphosphine derivatization of sulfur was used to form triphenylphosphine sulfide. Direct quantitation of elemental sulfur from crude oil requires an efficient sample preparation method. This paper describes how simultaneous extraction derivatization of elemental sulfur was performed for the first time using porous hollow fiber membrane. A thick (0.25 um pore size; 1550 μm wall thickness; and 5500 μm inner diameter) hollow fiber membrane filled with triphenylphosphine (dissolved N-methylpyrrolidone) is used as a solvent bar. The solvent bar is tumbled freely in the crude oil sample; the elemental sulfur was extracted and derivatized. Finally, the derivatized sulfur was analyzed by gas chromatography/mass spectrometry. Various experimental conditions of solvent bar microextraction (SBME) were optimized to achieve higher extraction. The linear range was established between 1 and 50 μg/mL, while a squared regression coefficient was found to be 0.9959 μg/mL. Relative standard deviation (RSD) was below 10%. Relative recoveries were calculated for SBME in crude oil samples and were in the range between 98.2% and 101.2%.

scholarly journals Investigation of the bioremediation potential of aerobic zymogenous microorganisms in soil for crude oil biodegradation

2011 ◽  
Vol 76 (3) ◽  
pp. 425-438 ◽  
Author(s):  
Tatjana Solevic ◽  
Milan Novakovic ◽  
Mila Ilic ◽  
Malisa Antic ◽  
Miroslav Vrvic ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Laboratory Experiment ◽  
Column Chromatography ◽  
Control Sample ◽  
Gas Chromatography Mass Spectrometry ◽  
Methyl Groups ◽  
Chromatography Mass Spectrometry ◽  
Oil Biodegradation

The bioremediation potential of the aerobic zymogenous microorganisms in soil (Danube alluvium, Pancevo, Serbia) for crude oil biodegradation was investigated. A mixture of paraffinic types of oils was used as the substrate. The laboratory experiment of the simulated oil biodegradation lasted 15, 30, 45, 60 and 75 days. In parallel, an experiment with a control sample was conducted. Extracts were isolated from the samples with chloroform in a separation funnel. From these extracts, the hydrocarbons were isolated by column chromatography and analyzed by gas chromatography-mass spectrometry (GC-MS). n-Alkanes, isoprenoids, phenanthrene and its derivatives with one and two methyl groups were quantitatively analyzed. The ability and efficiency of zymogenous microorganisms in soil for crude oil bioremediation was assessed by comparison between the composition of samples which were exposed to the microorganisms and the control sample. The investigated microorganisms showed the highest bioremediation potential in the biodegradation of n-alkanes and isoprenoids. A considerably high bioremediation potential was confirmed in the biodegradation of phenanthrene and methyl phenanthrenes. Low bioremediation potential of these microorganisms was proven in the case of polycyclic alkanes of the sterane and triterpane types and dimethyl phenanthrenes.

IDENTIFICATION OF PETROLEUM RESIDUE SOURCES AFTER A FIRE AND OIL SPILL

1981 ◽  
Vol 1981 (1) ◽  
pp. 541-546 ◽  
Author(s):  
Edward B. Overton ◽  
Jo Ann McFall ◽  
S. Wayne Mascarella ◽  
Charles F. Steele ◽  
Shelley A. Antoine ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Oil Spill ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Large Area ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry ◽  
Polycyclic Aromatic

ABSTRACT The evaluation of the environmental impacts resulting from an oil spill and fire at the West Hackberry Strategic Petroleum Reserve Complex was particularly challenging. The fire and spill resulted in two distinctive types of chemical releases into the environment. The spill released a large quantity of Arabian light crude oil into an area that had been exposed to Louisiana sweet crude oil during 40 years of production. The fire produced significant quantities of pyrogenic polycyclic aromatic hydrocarbons that were dispersed over a large area by wind. New methods were developed to identify samples, and consequently the areas, that were affected by these releases. Samples of sediment affected by the oil spill were distinguished from nonaffected samples by comparing the ratios of the alkyl phenanthrenes to the alkyl dibenzothiophenes (C1, C2, and C3) in a gas chromatography–mass spectrometry analysis of the extractable hydrocarbons. These ratios effectively identified affected sediment even when the samples had been exposed to the environment for more than a year. Contamination from the pyrogenic products of the fire was identified by the elevated quantities of fluoranthene and pyrene in affected samples. Foliage, soil, and sediment samples were collected quarterly for the year following the incident and were analyzed by the combined gas chromatography-mass spectrometry method. Impact from the fire was detected in foliage and soil samples collected several miles downwind from the incident.

APPLICATION OF COMPUTERIZED GAS CHROMATOGRAPHY – MASS SPECTROMETRY TO OIL EXPLORATION IN AUSTRALIA

1980 ◽  
Vol 20 (1) ◽  
pp. 221 ◽  
Author(s):  
R.P. Philp ◽  
T.D. Gilbert
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Biological Marker ◽  
Ion Source ◽  
Gas Chromatography Mass Spectrometry ◽  
Analytical Technique ◽  
Chromatography Mass Spectrometry ◽  
Ms Analysis ◽  
The Masses

Computerized gas chromatography-mass spectrometry (C-GC-MS) is a sophisticated analytical technique capable of identifying very small quantities of individual components in complex mixtures of organic compounds. One field in which C-GC-MS can play an extremely important role is correlation studies of crude oils and source rocks.In C-GC-MS analyses, compounds present in the crude oil or source rock extract are first separated by the gas chromatograph and then fragmented and ionized in the ion source of the mass spectrometer. The mass and relative intensities of the ions formed are recorded by the computer. Normally the masses of one or two specific fragments can be used to distinguish as particular class of compounds, a technique that is particularly useful for crude oil correlation studies.Comparison of mass fragmentograms for different oils yields information about their sources. Identical fragmentograms for ion characteristics of certain classes of "biological marker" compounds imply that the distribution of compounds in the oils is identical and hence that the oils had the same or very similar sources.Results of C-GC-MS analysis of four oils from the Gippsland Basin indicate that, despite varying degrees of biodegradation, the oils had the same or very similar source materials. Similarly C-GC-MS analysis of the Barrow Jurassic and Windalia oils from the Carnarvon Basin provides evidence to support the theory that these two oils had the same or very similar source material.

scholarly journals Bioremediation of Crude Oil by Rhizosphere Fungal Isolates in the Presence of Silver Nanoparticles

2020 ◽  
Vol 17 (18) ◽  
pp. 6564
Author(s):  
Mayasar I. Al-Zaban ◽  
Mohamed A. Mahmoud ◽  
Maha A. AlHarbi ◽  
Aisha M. Bahatheq
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Silver Nanoparticles ◽  
Crude Oil ◽  
Ph Value ◽  
Research Work ◽  
Mass Spectrometry Analysis ◽  
Gas Chromatography Mass Spectrometry ◽  
Fungal Isolates ◽  
Chromatography Mass Spectrometry

Background: This research work focuses on the utilization of indigenous fungi for in situ bioremediation of crude oil in the presence of silver nanoparticles. Methods: Two fungi belonging to two different genera showed promising crude oil-degrading abilities. Fungal isolates were identified based on internal transcribed spacer rDNA sequence analysis. Gas chromatography-mass spectrometry analysis of the crude oil remaining in the culture medium after seven days was performed. The response surface method (RSM) designed by Box-Behnken was used to establish a mathematical model. Inter-simple sequence repeat (ISSR) primers were used to examine the genetic variation of fungal isolates. Results: Gas chromatography-mass spectrometry (GC-MS) analysis after seven days showed that the optimum biodegradation of crude oil was 57.8%. The crude oil degradation rate was significantly affected by a temperature of 30 °C, pH value of 7, crude oil concentration of 4 g/L, a 1:1 ratio between A. flavus AF15 and T. harzianum TH07, and an silver nanoparticle (AgNP) concentration of 0.05 g. Molecular characterization in fungal isolates is extremely valuable when using ISSR markers. Conclusions: Two fungal isolates showed promising crude oil-degrading abilities with positive effect of low concentrations of AgNPs on biodegradation. RSM is an efficient mathematical method to optimize the microbial biodegradation of crude oil.

scholarly journals GAS CHROMATOGRAPHY - MASS SPECTROMETRY (GC-MS) IN ORGANIC GEOCHEMICAL INVESTIGATION OF CRUDE OILS FROM KIKINDA AND VELEBIT FIELDS IN SERBIA

2017 ◽  
Vol 5 (6) ◽  
pp. 550-560 ◽  
Author(s):  
Hamza Khalifa ◽  
Abdussalam Ali Ahmed ◽  
Ayiman Abusaediyah ◽  
Aejeeliyah Yousuf ◽  
Salheen Grimida
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Crude Oil ◽  
Oil And Gas ◽  
Pannonian Basin ◽  
Gas Chromatography Mass Spectrometry ◽  
Gas Field ◽  
Chromatography Mass Spectrometry ◽  
Two Samples ◽  
Oil Gas

In this work two crude oil samples were investigated to present the difference between biodegraded (Velebit) and non-degraded (Kikinda) oil. Two samples are from the Velebit oil–gas field and the Kikinda oil-gas field. These are two of the largest oil and gas deposits in the Serbian part of the Pannonian Basin. In the experimental part of this work, two samples of crude oil were separated by column chromatography. Saturated hydrocarbons were analyzed by gas chromatography-mass spectrometry instruments. Based on the abundance and distribution of biomarkers, it could be conclude that the distribution is typical of oil in both samples, with difference in the distribution of n-alkane.  GC-MS chromatogram of n-alkanes and isoprenoids of saturated fraction isolated from Velebit crude oil show the distribution typical of oils altered by biodegradation.

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