Asphaltene detection using surface enhanced Raman scattering (SERS)

Area of Science:

• Analytical Chemistry
• Materials Science
• Spectroscopy

Background:

• Petroleum analysis requires sensitive detection methods for components like asphaltenes.
• Current methods may lack the sensitivity or simplicity for rapid field analysis.

Purpose of the Study:

• To develop a highly sensitive and simple method for detecting asphaltene and petroleum.
• To explore the potential of surface-enhanced Raman spectroscopy for various applications.

Main Methods:

• Utilized surface-enhanced Raman spectroscopy (SERS).
• Employed a gold substrate for enhanced signal detection.
• Used 514 nm laser excitation for spectral analysis.

Main Results:

• Achieved detection of sub parts per million quantities of asphaltene.
• Demonstrated the capability to detect petroleum presence.
• The SERS method showed high sensitivity and a simple format.

Conclusions:

• SERS on a gold substrate offers a transformative approach for detecting trace amounts of asphaltene and petroleum.
• The technique's sensitivity and simplicity support applications in sample triage, flow assurance, and environmental monitoring.
• This method is valuable for analyzing unique or one-of-a-kind materials where sample quantity is limited.