Showing papers on "Bioaerosol published in 1987"
TL;DR: In this article, three major sampler types available include gravity devices, impactors and suction samplers, which are used to sample particles of a wide size range from measured volumes of air.
80 citations
TL;DR: A new bioaerosol sampler designed, fabricated and field-tested in sampling birch (Betula) pollen grains and smaller particles containing Betula antigens was significantly more efficient than Burkard trap and prominent during pollen peak periods.
Abstract: A new bioaerosol sampler consisting of Liu-type atmospheric aerosol sampling inlet, coarse particle inertial impactor, two-stage high-efficiency virtual impactor (aerodynamic particle sizes respectively in diameter: ≥ 8 μm, 8–2.5 μm and 2.5 μm; sampling on filters) and a liquid-cooled condenser was designed, fabricated and field-tested in sampling birch (Betula) pollen grains and smaller particles containing Betula antigens. Both microscopical (pollen counts) and immunochemical (enzyme-linked immunosorbent assay) analyses of each stage were carried out. The new sampler was significantly more efficient than Burkard trap e.g. in sampling particles of Betula pollen size (ca. 25 μm in diameter). This was prominent during pollen peak periods (e.g. May 19th, 1985, in the virtual impactor 9482 and in the Burkard trap 2540 Betula p.g. x m−3 of air). Betula antigens were detected also in filter stages where no intact pollen grains were found; in the condenser unit the antigen concentrations instead were very low.
13 citations
TL;DR: The microbial levels decreased in all ventilation systems, and no difference was observed between bioaerosol counts in offices with and without humidification.
Abstract: Becterial and fungal spore samples were collected from twelve office building ventilation systems. Measurements were done both with and without humidification. Ventilation or humidification systems were not found to act as bioaerosol sources in any case. No difference was observed between bioaerosol counts in offices with and without humidification. The microbial levels decreased in all ventilation systems.
1 citations