Showing papers in "Journal of Aerosol Science in 1986"

TL;DR: In this paper, the authors presented experimentally determined total and regional deposition data for breathing monodisperse aerosols of a wide particle size range at different patterns through the mouth and nose.

TL;DR: In this article, a theoretical treatment of a tandem differential mobility analyzer (TDMA) system is presented, and procedures for laboratory implementation are discussed, and the theory is presented in an analytic form that can be encoded for on-line or off-line data analysis.

TL;DR: In this paper, a light-scattering technique for measuring the diameter of transparent droplets is described, based on the theory of ray optics, which is done on-line by a microcomputer.

TL;DR: In this article, a comparative study of the response of a photo-electric sensor to different PAH aerosol systems is presented, showing that an analytically useful response is only obtained as long as a monolayer coating is not exceeded.

TL;DR: In this article, an experimental laminar coaxial jet system for study of the dispersed properties of single and multicomponent condensation aerosols is described by means of an approximate moment model for particle nucleation and growth.

TL;DR: In this article, a theoretical approach to describe particle deposition onto electrostatically charged filters has been proposed, which includes the superposition of the mechanical and electrostatic effects, and good agreement between theory and experiment was found.

TL;DR: The results were qualitatively and quantitatively consistent with a new physical model which takes account of the fact that the sampled air not only diverges or converges (depending on the relationship between wind speed and sampling velocity) but also turns to pass through the plane of the sampling orifice as mentioned in this paper.

TL;DR: The results of an experiment that was set up to demonstrate the occurrence of ion-induced aerosol formation (see Part I of this paper, Raes and Janssens, 1985) are analysed quantitatively by modelling the dynamics of aerosol growth under different irradiation conditions.

TL;DR: Aerosol particles collected over the Pacific Ocean between 14 February and 7 May 1984 were examined for their ability to nucleate ice by freezing, sorption, and condensation-followed-by-freezing.

TL;DR: In this paper, the results of this work showed that monodisperse liquid droplet and solid particulate (PSL-polystyrene latex) aerosols behave significantly differently in an APS 3300 (TSI Inc., St Paul, Minnesota, U.S.A.).

TL;DR: In this article, a set of high-volume screen diffusion batteries (DBs) operating at volumetric flow rates of ∼ 2 m3 h−1 were used to measure radon daughter activity size distributions in the diameter size range 0.5-2000 nm.

TL;DR: In this paper, the effect of particle refractive index on measured size was determined theoretically by calculating response curves for 32 refractive indexes, and the measured sizes were within ± 2 channel widths of the correct aerodynamic diameters.

TL;DR: In this paper, a screen-type diffusion battery is shown to be applicable for sub-monolayer detection on 7-8 nm particles if the penetration is as small as 1% and a combination of this method with in situ near-UV photoemission from Perylenecoated C particles leads to a clear distinction between adsorption and condensation.

TL;DR: In this article, the results of counting efficiencies of a condensation nuclei counter (TSI 3020), a white-light optical particle counter (Climet CI-8060), and four laser instruments were determined relative to the LAS-X. Measurements were made in the geometric diameter range of 0.1-4 μm using latex spheres as well as monodisperse organic and inorganic particles produced by a vibrating orifice generator.

TL;DR: A Timbrell Aerosol Spectrometer was used to size select several types of airborne polydisperse particles: approximately unit density spheres, fiber-frax glass fibres and oblate spheroid shaped Arthrinium fungus spores.

TL;DR: In this article, a study is made of the aspiration of small airborne dust particles into a bulky sampling head using the Linear Boundary Integral Equation (L.B.I.E.) method which involves an approximation of Green's integral formula.

TL;DR: In this article, the photodegradation of organic compounds (gases and vapours) is observed to be dominated by OH radicals, and rate constants for the reaction of OH with n-alkanes from propane to n-nonane are determined from the simultaneous decay of the hydrocarbons.

TL;DR: In this article, the authors used the limiting trajectory method to study the aspiration of coarse aerosols by a thin-walled sampler in a vertical downflow and determined the secondary aspiration as a function of the velocity ratio and Stokes number.

TL;DR: In this paper, the probability of particle bounce after multiple impacts with a cylinder is related to the particle's initial separation from the centerline (Y coordinate) through the trajectory calculation, and a family of such Y coordinates corresponding to different dynamic responses upon impacts is identified.

TL;DR: In this paper, the fraction of charged particles produced by combustion of a number of materials has been measured as a function of the particle size in the submicron range, and the particle charge was found to depend strongly on the material burnt and on the combustion mode.