Principles of Dust Particles

1. Size Determines Behavior
   Particle size is the primary factor affecting suspension and settling. Fine particles (e.g., PM2.5) remain airborne longer and disperse widely, while larger particles settle more quickly.

2. Physical Properties Affect Movement
   Density, shape, and surface charge influence particle trajectories and adhesion. Fibrous or charged particles are more likely to attach to surfaces.

3. Environmental Factors Influence Distribution
   Temperature, humidity, and airflow alter particle suspension, aggregation, and deposition. For example, high humidity can cause particles to cluster and settle faster.

4. Source and Composition Determine Risk
   The origin and chemical makeup of particles affect their health and environmental hazards, guiding monitoring and control strategies.

5. Monitoring and Control Principles
   Effective control requires accurate sampling, particle size analysis, and proper filtration, purification, or electrostatic deposition methods tailored to the environment.