Application de la spectroscopie de fluorescence a l'étude du pétrole : le défi de la complexité

Ellingsen, Gunnar; Fery–Forgues, Suzanne

doi:10.2516/ogst:1998019

Cited by 13 publications

(10 citation statements)

References 31 publications

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“…The compounds in oil, responsible on optical response named: Fluorophores (Table 1), which are compounds that absorbs in the UV-visible range. This condition is fulfilled for conjugated electron systems, such as polyunsaturated molecules and aromatics 2 .…”

Section: Introductionmentioning

confidence: 99%

Crude Oil Sensing using Carbon Nano Structures Synthetized from Phoenix Dactylifera L. Cellulose

Tedjani

Mya

Rebiai

et al. 2019

Sci Rep

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This study reports on the crude oil-sensing using carbon nano structures (CNSs). A mixture of CNSs was obtained by a simple method of preparation using palm cellulose ash and nitric acid as precursors, the powder was characterized by x-ray diffraction and infrared spectroscopy. The optical density of crude oil from Rhoud El-Baguel area (Southeast of Algeria) studied using UV-Vis spectroscopy, before and after adding an amount of CNSs powder to view the CNSs crude oil sensing and therefore a new method to determine the quality of crude oils and the comparison between them. Results show that CNSs prepared from palm cellulose ash have a good crystallinity and it is formed mainly from carbon nano dots (CNDs) with 4.32 Å in layers spacing and 7.4 Å in crystallite size, indicate that CNSs can be used as an excellent crude oil sensor.

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Section: Introductionmentioning

confidence: 99%

Crude Oil Sensing using Carbon Nano Structures Synthetized from Phoenix Dactylifera L. Cellulose

Tedjani

Mya

Rebiai

et al. 2019

Sci Rep

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“…Optical methods, however, offer a convenient route to achieving these goals and of the available techniques, fluorescence spectroscopy offers high sensitivity, good diagnostic potential, relatively simple instrumentation, and suitability for either microscopy or portable instrumentation. 1,2 The fluorescence of crude petroleum oils derives from the aromatic hydrocarbon fraction, and this fluorescence emission is strongly influenced by the chemical composition (e.g., fluorophore and quencher concentrations) and physical characteristics (e.g., viscosity and optical density) of the oil. Unfortunately, crude petroleum oils are inherently complex mixtures of different compounds, in widely varying compo-sitions, which are obtained from an extensive range of different geological sources.…”

Section: Introductionmentioning

confidence: 99%

Time-Resolved Fluorescence Spectroscopic Study of Crude Petroleum Oils: Influence of Chemical Composition

Ryder

2004

Appl Spectrosc

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The fluorescence of crude petroleum oils is sensitive to changes in chemical composition and many different fluorescence methods have been used to characterize crude oils. The use of fluorescence lifetimes to quantitatively characterize oil composition has practical advantages over steady-state measurements, but there have been comparatively few studies in which the lifetime behavior is correlated with gross chemical compositional data. In this study, the fluorescence lifetimes for a series of 23 crude petroleum oils with American Petroleum Institute (API) gravities of between 10 and 50 were measured at several emission wavelengths (450-785 nm) using a 380 nm light emitting diode (LED) excitation source. It was found that the intensity average fluorescence lifetime (tau) at any emission wave-length does not correlate well with either API gravity or aromatic concentration. However, it was found that tau is strongly negatively correlated with both the polar and sulfur concentrations and positively correlated with the corrected alkane concentration. This indicates that the fluorescence behavior of crude petroleum oils is governed primarily by the concentration of quenching species. All the strong lifetime-concentration correlations are nonlinear and show a high degree of scatter, especially for medium to light oils with API gravities of between 25 and 40. The degree of scatter is greatest for oils where the concentrations (wt %) of the polar fraction is approximately 10 +/- 4%, the asphaltene component is approximately 1 +/- 0.5%, and sulfur is 0.5 +/- 0.4%. This large degree of scatter precludes the use of average fluorescence lifetime data obtained with 380 nm excitation for the accurate prediction of the common chemical compositional parameters of crude petroleum oils.

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“…Most petroleum oils are uorescent because of the presence of cyclic aromatic compounds; therefore, uorescence techniques can be used for rapid, nondestructive analysis. 2 Steady state uorescence spectroscopy has been used to characterize bulk petroleum materials from liquid oils, both crude 3,4 and re ned, 5 to solid asphaltenes, 6,7 bitumens, 8 and kerogens. 9,10 Both Kihle 11 and Stasiuk 12 have utilized microspectroscopic methods based on steady state uorescence spectroscopy for the noncontact analysis of synthetic and natural hydrocarbonbearing uid inclusions.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Analysis of Crude Oils by Fluorescence Lifetime and Steady State Measurements Using 380-nm Excitation

Ryder

2002

Appl Spectrosc

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Fluorescence emission and lifetime spectroscopy using 380-nm excitation have been successfully applied to the determination of API gravity and aromatic concentration of crude petroleum oils. Twelve crude oils from the North Sea with American Petroleum Institute (API) gravities of between 20 and 50 were analyzed; emission spectra were obtained with a standard fluorometer and the lifetime data with a pulsed ultraviolet light-emitting diode (UV-LED) coupled to a fluorescence lifetime system assembled in-house. A strong correlation between API gravity and the ratio of the fluorescence intensities recorded at 650 nm and 450 nm yielded a partial least-squares (PLS) regression model with an accurcy of ±4.6 °API; using the fluorescence intensity ratio at 650 nm and 550 nm gave an accuracy of ±5.8 °API. The average fluorescence lifetimes (τ̄) of the oils ranged from 1.9 to 18.6 ns, with τ̄ first increasing and then decreasing as the emission wavelength increased. These effects are due to the interplay between energy transfer and the quenching processes, which are governed by oil composition. A strong linear correlation was found between the ratio of the fluorescence lifetime measured at 650 nm and 550 nm and the aromatic concentration. A PLS regression model using this ratio had an accuracy of ±4% for aromatic concentration. Combining the fluorescence intensity with the lifetime measurements at 550 nm and 650 nm provides a rapid, quantitative, non-contact, nondestructive method of oil characterization.

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Application de la spectroscopie de fluorescence a l'étude du pétrole : le défi de la complexité

Cited by 13 publications

References 31 publications

Crude Oil Sensing using Carbon Nano Structures Synthetized from Phoenix Dactylifera L. Cellulose

Crude Oil Sensing using Carbon Nano Structures Synthetized from Phoenix Dactylifera L. Cellulose

Time-Resolved Fluorescence Spectroscopic Study of Crude Petroleum Oils: Influence of Chemical Composition

Quantitative Analysis of Crude Oils by Fluorescence Lifetime and Steady State Measurements Using 380-nm Excitation

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