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Document Type |
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Article In Conference |
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Document Title |
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Spectral Fingerprints of Weathered Crude Oils بصمات طيفية للبترول الخام المعرض لعوامل التعرية |
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Subject |
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Physics |
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Document Language |
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Arabic |
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Abstract |
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A newly patented method for spectral characterization of
petroleum oils has been applied in fingerprinting erude oils under different
weathering conditions. The method is based on measuring the time-resolved
fluorescence (TRF) spectra at narrow temporal gale-widths within the lime span
of the excitation laser pulse. The fingerprints are constructed in terms of contour
diagrams relating the intensities of the measured TRF spectra of each crude oi I to
the fluorescence emission wavelength and the position of the narrow time-gate at
which the spectra were measured. simultaneously. The five marketed crude oils
of Saudi Arabia; namely, Super Light, Extra Light , Light, Medium, and Heavy,
were used in the study. For each oil grade, live fingerprints were constructed
which corresponded to live different moderate weathering conditions: I) neat, 2)
weathering due to seawater, 3) weathering due to wind vaporization, 4)
weathering due to wind vaporization and sunlight, and 5) weathering due to
seawater, wind vaporization and sunlight combined. The fingerprints show the
presence of a pattern which changes systematically with the oil grade even in the
case of the weathered oils. This systematic ehange provides a powerful 1001 in
identifying the weathered spilled crude oils and, consequently, connecting them
to the original non-weathered oil shipment, The paper describes the procedure
used 10 mcasnre the TRF spectra and shows the unique fingerprint or each oil
case. It also presents a quantitative method that relates the area-under-the-curves
of the TRf spectra to the grade of the weathered oils. |
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Conference Name |
: |
the second saudi science confernce |
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Duration |
: |
From : 24محرم AH - To : 26محرم AH
From : 15مارس AD - To : 17مارس AD |
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Publishing Year |
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1425 AH
2004 AD |
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Number Of Pages |
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12 |
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Article Type |
: |
Article |
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Added Date |
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Wednesday, January 14, 2009 |
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Researchers
| عزت حجازي | HEGAZI, N/A | Researcher | | |
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