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Related Concept Videos

Atomic Absorption Spectroscopy: Atomization Methods01:25

Atomic Absorption Spectroscopy: Atomization Methods

708
Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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Related Experiment Video

Updated: Oct 2, 2025

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
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Physicochemical Characterization of Asphaltenes Using Microfluidic Analysis.

Nataira M Pagán Pagán1, Zhuqing Zhang1, Thao Vy Nguyen1

  • 1Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States.

Chemical Reviews
|February 23, 2022
PubMed
Summary
This summary is machine-generated.

Microfluidic devices offer advanced insights into asphaltene behavior, aiding oil production. These tools help understand and mitigate asphaltene precipitation and deposition challenges in the oil and gas industry.

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Area of Science:

  • Petroleum Geochemistry and Engineering
  • Materials Science and Nanotechnology
  • Physical Chemistry

Background:

  • Crude oils contain complex organic molecules, with asphaltenes being the heaviest and most problematic component.
  • Asphaltene precipitation and deposition cause significant issues in oil production, transmission, and processing.
  • Characterizing asphaltenes is difficult due to their complex molecular structure and heterogeneity.

Purpose of the Study:

  • To review the application of microfluidic devices for studying asphaltene behavior.
  • To highlight how microfluidics provides new physical, chemical, and dynamic information on asphaltenes.
  • To showcase advancements in physicochemical characterization of complex fluids for the oil and gas industry.

Main Methods:

  • Utilizing microfluidic devices to mimic reservoir rock characteristics and fluid flow.
  • Employing in situ imaging combined with chemical characterization methods.
  • Studying asphaltene deposition, interfacial properties, rheology, and remediation strategies in microchannels and microfluidic porous media.

Main Results:

  • Microfluidic devices capture key reservoir rock characteristics, offering insights into fluid transport and interactions.
  • In situ imaging in microfluidics provides pore-scale details of oil-water-chemical interfaces.
  • Microscale analysis advances the understanding of complex mixtures like crude oil.

Conclusions:

  • Microfluidic devices are valuable tools for advancing the physicochemical characterization of complex fluids.
  • Microfluidics offers new physical, chemical, and dynamic information crucial for addressing asphaltene-related problems.
  • Understanding microscale phenomena leads to improved design of macroscale oil and gas processes and flow assurance.