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Seção: ArtigosTítulo: An Empirical model for estimating the collection efficiency of dust-mist respirators / L.M. Brosseau, J.S. Evans and M.J. EllenbeckerAutor: Brosseau, L.M.Notas: Sumario: This paper compares experimental measurements of filter performance with predictions of aerosol collection by dust-mist respirators using the single fibre efficiency model and an empirical model developed by the authors. The former, a theoretically-based semi-empirical model, indicates that mechanical phenomena such a impaction, interception and diffusion are responsible for omly a fraction of the collection efficiency of dust-mist respirators, i.e. 30-70% depending of particle sizeRegistros relacionados: En: The Annals of occupational hygiene. - Oxford [etc.]. - nº 2, April 1993 ; p. 135-150Materia / lugar / evento: Higiene industrialContaminantes químicosAerosolesEquipos respiratoriosFiltrosControl de contaminantesMétodos de controlOtros autores: Evans, John S. Ellenbecker, Michael J. Títulos secundários: Título: The Annals of occupational hygiene Outras classificações: 872Direitos: In Copyright (InC)