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Measurement of Particle Size Distribution in Turbid Solutions by Dynamic Light Scattering Microscopy

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Particulate concentration measured from scattered light fluctuations.

A Chen, J Hao, Z Zhou

|December 8, 2007

Summary

Scintillation of scattered radiation from particulate matter was analyzed using stochastic theory. A new method uses the scintillation index to measure particle concentration, unaffected by lens contamination or particle color.

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Area of Science:

Optics
Atmospheric Science
Environmental Monitoring

Background:

Scattered radiation is affected by particulate matter.
Understanding radiation scintillation is crucial for remote sensing applications.

Purpose of the Study:

To investigate the scintillation of scattered radiation caused by particulate matter.
To develop a novel method for measuring particulate-mass concentration using the scintillation index.

Main Methods:

Stochastic theory was employed to derive mathematical expressions for expectation, variance, and the scintillation index.
The scintillation index was correlated with particulate-mass concentration.

Main Results:

Expressions for mathematical expectation, variance, and scintillation index were successfully derived.
A method for measuring particulate-mass concentration based on the scintillation index was proposed.

Conclusions:

The proposed method offers a robust approach to measuring particulate-mass concentration.
This technique demonstrates insensitivity to common issues like lens contamination and particle-color variations, enhancing its practical applicability.