Ad
related to: condensation particle counter examples
Search results
Results from the WOW.Com Content Network
A condensation particle counter or CPC is a particle counter that detects and counts aerosol particles by first enlarging them by using the particles as nucleation centers to create droplets in a supersaturated gas. [2] Three techniques have been used to produce nucleation: Adiabatic expansion using an expansion chamber.
Andersen's schematic for the six-stage Andersen sampler, detailing movement of air and hole sizes for the top two stages [1]. An Andersen sampler, Andersen impactor, or sieve impactor [2] is a cascade impactor used to determine the amount of viable pathogens in a given area, in particular bacteria and fungi.
The light blocking optical particle counter method is typically useful for detecting and sizing particles greater than 1 micrometre in size and is based upon the amount of light a particle blocks when passing through the detection area of the particle counter. This type of technique allows high resolution and reliable measurement.
Condensation particle counter (CPC) ... Examples of these subsets of the particle-size distribution of an aerosol, important in occupational health, include the ...
Besides measuring the total mass of particles per unit volume of air (particle mass concentration), sometimes it is more useful to measure the total number of particles per unit volume of air (particle number concentration). This can be done by using a condensation particle counter (CPC). [96] [97]
Typically, they are measured (or counted) with condensation particle counters, which effectively enlarge the particles by condensing vapors onto them to make bigger and much more easily detectable droplets. [36] [37] The atomic composition of particulate samples can be measured with techniques such as X-ray spectrometry. [38]
The air now contains only particles of a certain diameter. The flow is introduced into a CPC, a condensation particle counter, which measures the concentration of particles in an aerosol sample. The CPC works by using butanol vapor condensation on the particles present in the air sample. The particles are exposed to butanol vapor heated to 39 °C.
العربية; Azərbaycanca; বাংলা; 閩南語 / Bân-lâm-gú; Беларуская; Беларуская (тарашкевіца) Català; Čeština
Ad
related to: condensation particle counter examples