NIOSHTIC-2 Publications Search

Introduction to aerosol characterization.

Kulkarni PS; Baron PA; Willeke K
Aerosol measurement: principles, techniques, and applications, third edition. Kulkarni P, Baron PA, Willeke K, eds., Hoboken, NJ: John Wiley and Sons, Inc, 2011 Jan; :1-13
The term aerosol refers to suspension of liquid or solid particles in a gaseous medium. The term originated as the gas-phase analogue to hydrosols (meaning "water particle" in Greek) and refers to suspension of particles in a liquid. Aerosols are two-phase systems, consisting of the suspended solid or liquid phase, and the surrounding gas phase. Aerosols are formed by the conversion of gases to particles or by the disintegration of liquids or solids into finer constituents. Aerosols are quite ubiquitous; airborne particles from resuspended soil, atmospheric cloud droplets, welding fumes, smoke from power generation, airborne particles from volcanic eruptions, cigarette smoke, and salt particles formed from ocean spray are all examples of aerosols. Many commonly known phenomena such as dust, suspended particulate matter, fume, smoke, mist, fog, haze, clouds, or smog can be described as aerosols. The need to measure aerosols has increased dramatically over the last few decades in various fields including air pollution, public health, atmospheric science, nanotechnology, chemical manufacturing, pharmaceuticals, and medicine. For instance, environmental engineers and industrial hygienists perform aerosol measurements in order to ensure that the public and the industrial work force are not exposed to hazardous aerosols at undesirable concentration levels, while atmospheric scientists measure aerosols to understand their influence on the earth's climate. Increasingly complex and demanding regulations to mitigate particulate matter pollution mean that aerosol measurements are becoming more and more time- and resource-intensive. These measurements may often require more than elementary knowledge to conduct and interpret the measurements. Devising a costeffective mitigation strategy depends on reliable measurement of physical and chemical characteristics of aerosols.
Aerosol-particles; Aerosols; Aerosol-sampling; Respiratory-system-disorders; Particulate-dust; Particulate-sampling-methods; Particle-aerodynamics; Sampling; Sampling-methods; Measurement-equipment; Indoor-air-pollution; Indoor-environmental-quality; Author Keywords: principles and aerosol characterization; liquid or solid particle suspension; gaseous medium; parameters affecting aerosol behavior; particle size and shape; aerosol measurement techniques; aerosol particle on substrate; in situ; near-real-time aerosol
Publication Date
Document Type
Kulkarni P; Baron PA; Willeke K
Fiscal Year
Identifying No.
NIOSH Division
Priority Area
Source Name
Aerosol measurement: principles, techniques, and applications, third edition.
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division