A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
On the counting efficiency of condensation nuclei counters
Abstract The response of the General Electric condensation nuclei counter has been determined as a function of particle size by means of monodisperse aerosols. The counting efficiency of the instrument has been found to depend on particle size, decreasing sharply with particle size below about 0.01 μm diameter. The response of the Gardner counter appears to be unaffected by particle size in the 0.01–0.05 μm diameter range, but the calibration result obtained differs substantially (75%) from that provided by the manufacturer. It has been shown that the calibration results for nuclei counters can have substantial uncertainties due to the unknown size distribution of the calibration aerosol used, the size-dependent response characteristics of the instrument under calibration and those of the calibration standard. It is concluded that results of condensation nuclei measurements are subject to large uncertainties and should be interpreted with care.
On the counting efficiency of condensation nuclei counters
Abstract The response of the General Electric condensation nuclei counter has been determined as a function of particle size by means of monodisperse aerosols. The counting efficiency of the instrument has been found to depend on particle size, decreasing sharply with particle size below about 0.01 μm diameter. The response of the Gardner counter appears to be unaffected by particle size in the 0.01–0.05 μm diameter range, but the calibration result obtained differs substantially (75%) from that provided by the manufacturer. It has been shown that the calibration results for nuclei counters can have substantial uncertainties due to the unknown size distribution of the calibration aerosol used, the size-dependent response characteristics of the instrument under calibration and those of the calibration standard. It is concluded that results of condensation nuclei measurements are subject to large uncertainties and should be interpreted with care.
On the counting efficiency of condensation nuclei counters
Liu, Benjamin Y.H. (author) / Kim, C.S. (author)
Atmospheric Environment ; 11 ; 1097-1100
1977-04-27
4 pages
Article (Journal)
Electronic Resource
English
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