Study of Size Distribution of Suspended Particles in Water Based on Mie Scattering (CAT#: STEM-ST-0086-YJL)

Introduction

Suspended particles refer to particles suspended in air or mixed in water with an aerodynamic equivalent diameter is less than or equal to 100μm. With the rapid development of society and economy, deforestation and burning of forests will cause serious air or water pollution problems. Therefore, the content and distribution of suspended particles are very important indicators to measure air quality evaluation system. The size and chemical composition of suspended particles determine its harm degree to human body. Suspended particles are dispersed in gas or liquid in different distribution forms, if people are exposed to these polluted gas or water for a long time, the number of human respiratory diseases will increase day and day. So accurately measure the size and distribution of suspended particles and effectively filter them out become particularly important.

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Principle Applications Procedure Materials Notes Related Products

Principle

Mie scattering is defined as the type of scattering in which the diameter of the particle is the same or more than the wavelength of the radiation. Mie scattering gives a generalized solution for a system where a scattering of light takes place by a homogenous spherical medium. And this medium should have a refractive index different from that of the medium through which the light is traversing.
Unlike Rayleigh scattering, Mie scattering is not a physically independent phenomenon rather, it is a solution to Maxwell's equations for situations where the phase of the incident angle can change within the dimension of the scattering particles. Mie scattering is more commonly known as Mie solution, and it is named after Gustav Mie, a German physicist.
Mie scattering is also known as aerosol particle scattering, takes place in the atmosphere below 1,500 feet. In Mie scattering, the diameter of the spherical particles through which the light is scattered is approximately equal to the wavelength.

Applications

Mie scattering occurs in a variety of applications, including atmospheric science, cancer detection and treatment, metamaterials, and parasitology. Another application is the characterization of particles by optical scattering measurements.

Procedure

1. Sample preparation
2. Measurement by scattering detection instrument
3. Data analysis

Materials

Mie scattering measurement system

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