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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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Solid Particle Swarm Measurement in Jet Fuel Based on Mie Scattering Theory and Extinction Method.

Limin He1,2, Heng Wu1,2, Jifeng Li1

  • 1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.

Sensors (Basel, Switzerland)
|March 11, 2023
PubMed
Summary
This summary is machine-generated.

This study introduces dynamic measurements for solid particles in jet fuel, overcoming static detection limits. Results show scattering intensity decreases with angle and varies with particle size and concentration.

Keywords:
dynamic scatteringjet fuelmass concentration measurementparticle size measurement

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Area of Science:

  • Analytical Chemistry
  • Fluid Dynamics
  • Optical Physics

Background:

  • Static detection methods for solid particles in jet fuel have limitations due to small and random sample sizes.
  • Accurate particle characterization in fuels is crucial for performance and safety.

Purpose of the Study:

  • To develop and validate a dynamic measurement technique for solid particles in jet fuel using large samples.
  • To analyze the scattering characteristics of copper particles in jet fuel under dynamic flow conditions.
  • To establish a relationship between light intensity measurements and particle parameters.

Main Methods:

  • Utilized Mie scattering theory and the Lambert-Beer law to analyze particle scattering.
  • Developed a prototype for multi-angle scattered and transmitted light intensity measurements.
  • Employed the equivalent flow method to convert vortex flow rates to equivalent pipe flow rates.
  • Conducted experiments with copper particles (0.5-10 μm) at varying concentrations (0-1 mg/L) and flow rates (187-310 L/min).

Main Results:

  • Scattering signal intensity was found to decrease as the scattering angle increased.
  • Both scattered and transmitted light intensities were observed to vary with particle size and mass concentration.
  • Experimental data confirmed the relationship between light intensity and particle parameters.

Conclusions:

  • The developed prototype demonstrates effective dynamic detection capabilities for solid particles in jet fuel.
  • The study provides a robust method for analyzing particle characteristics in fuel under realistic flow conditions.
  • The established relationship equations enhance the quantitative analysis of particle parameters.