Production of monodispersed aerosol by evaporation and condensation of vapor under control process

Rebours, Arnaud; Boulaud, D.; Renoux, A.

doi:10.1016/0021-8502(92)90381-5

Cited by 7 publications

(1 citation statement)

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“…Previous work (Brockmann, 1981;Stolzenburg, 1988;Ahn and Liu, 1990;Rebours et al, 1992) has demonstrated that pulse heights from the photodetector of an ultrafine condensation nucleus counter (UCNC) provide information on sizes of ultrafine particles in the 3-15 diameter range. A recent intercomparison of four methods for ultrafine aerosol measurement (Wiedensohler et al, 1994) indicated that the pulse height analysis (PHA) technique may be the best method available for the measurement of ultrafine aerosols that are variable and of low concentration (< 100 ~m -~) .…”

Section: Introductionmentioning

confidence: 99%

Ultrafine Aerosol Measurement Using a Condensation Nucleus Counter with Pulse Height Analysis

Saros¹,

Weber²,

Marti³

et al. 1996

Aerosol Science and Technology

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ABSTRACT. Photodetector pulse heights from an ultrafine condensation nucleus counter increase monotonically with particle size in the -2.7-15 nm diameter range. This relationship can be used to measure concentrations and size distributions of ultrafine aerosols. In this study, we investigated the sensitivity of size-dependent pulse heights to total particle concentration, absolute pressure (0.25-1 atmosphere), and particle composition (H2S04, (NH,),SO,,NaCl, and tungsten oxide). We found that pulse heights shifted significantly with pressure and slightly with concentration. Coincidence led to errors for concentrations exceeding 4 X lo3 ~m -~. Over the range of conditions investigated, however, the observed shifts in the pulse height voltage were independent of size. The pulse height method is particularly applicable to situations involving low ultrafine particle concentrations, such as are encountered in the remote troposphere. AEROSOL SCIENCE AND TECHNOLOGY

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Section: Introductionmentioning

confidence: 99%